CREATE EXTENSION pg_trgm; select show_trgm(''); show_trgm ----------- {} (1 row) select show_trgm('(*&^$@%@'); show_trgm ----------- {} (1 row) select show_trgm('a b c'); show_trgm --------------------------------------- {" a"," b"," c"," a "," b "," c "} (1 row) select show_trgm(' a b c '); show_trgm --------------------------------------- {" a"," b"," c"," a "," b "," c "} (1 row) select show_trgm('aA bB cC'); show_trgm --------------------------------------------------------- {" a"," b"," c"," aa"," bb"," cc","aa ","bb ","cc "} (1 row) select show_trgm(' aA bB cC '); show_trgm --------------------------------------------------------- {" a"," b"," c"," aa"," bb"," cc","aa ","bb ","cc "} (1 row) select show_trgm('a b C0*%^'); show_trgm --------------------------------------------- {" a"," b"," c"," a "," b "," c0","c0 "} (1 row) select similarity('wow','WOWa '); similarity ------------ 0.5 (1 row) select similarity('wow',' WOW '); similarity ------------ 1 (1 row) CREATE TABLE test_trgm(t text); \copy test_trgm from 'data/trgm.data select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 1 qwertyu0980 | 0.714286 qwertyu0981 | 0.714286 qwertyu0982 | 0.714286 qwertyu0983 | 0.714286 qwertyu0984 | 0.714286 qwertyu0985 | 0.714286 qwertyu0986 | 0.714286 qwertyu0987 | 0.714286 qwertyu0989 | 0.714286 qwertyu0088 | 0.6 qwertyu0098 | 0.6 qwertyu0188 | 0.6 qwertyu0288 | 0.6 qwertyu0388 | 0.6 qwertyu0488 | 0.6 qwertyu0588 | 0.6 qwertyu0688 | 0.6 qwertyu0788 | 0.6 qwertyu0888 | 0.6 qwertyu0900 | 0.6 qwertyu0901 | 0.6 qwertyu0902 | 0.6 qwertyu0903 | 0.6 qwertyu0904 | 0.6 qwertyu0905 | 0.6 qwertyu0906 | 0.6 qwertyu0907 | 0.6 qwertyu0908 | 0.6 qwertyu0909 | 0.6 qwertyu0910 | 0.6 qwertyu0911 | 0.6 qwertyu0912 | 0.6 qwertyu0913 | 0.6 qwertyu0914 | 0.6 qwertyu0915 | 0.6 qwertyu0916 | 0.6 qwertyu0917 | 0.6 qwertyu0918 | 0.6 qwertyu0919 | 0.6 qwertyu0920 | 0.6 qwertyu0921 | 0.6 qwertyu0922 | 0.6 qwertyu0923 | 0.6 qwertyu0924 | 0.6 qwertyu0925 | 0.6 qwertyu0926 | 0.6 qwertyu0927 | 0.6 qwertyu0928 | 0.6 qwertyu0929 | 0.6 qwertyu0930 | 0.6 qwertyu0931 | 0.6 qwertyu0932 | 0.6 qwertyu0933 | 0.6 qwertyu0934 | 0.6 qwertyu0935 | 0.6 qwertyu0936 | 0.6 qwertyu0937 | 0.6 qwertyu0938 | 0.6 qwertyu0939 | 0.6 qwertyu0940 | 0.6 qwertyu0941 | 0.6 qwertyu0942 | 0.6 qwertyu0943 | 0.6 qwertyu0944 | 0.6 qwertyu0945 | 0.6 qwertyu0946 | 0.6 qwertyu0947 | 0.6 qwertyu0948 | 0.6 qwertyu0949 | 0.6 qwertyu0950 | 0.6 qwertyu0951 | 0.6 qwertyu0952 | 0.6 qwertyu0953 | 0.6 qwertyu0954 | 0.6 qwertyu0955 | 0.6 qwertyu0956 | 0.6 qwertyu0957 | 0.6 qwertyu0958 | 0.6 qwertyu0959 | 0.6 qwertyu0960 | 0.6 qwertyu0961 | 0.6 qwertyu0962 | 0.6 qwertyu0963 | 0.6 qwertyu0964 | 0.6 qwertyu0965 | 0.6 qwertyu0966 | 0.6 qwertyu0967 | 0.6 qwertyu0968 | 0.6 qwertyu0969 | 0.6 qwertyu0970 | 0.6 qwertyu0971 | 0.6 qwertyu0972 | 0.6 qwertyu0973 | 0.6 qwertyu0974 | 0.6 qwertyu0975 | 0.6 qwertyu0976 | 0.6 qwertyu0977 | 0.6 qwertyu0978 | 0.6 qwertyu0979 | 0.6 qwertyu0990 | 0.6 qwertyu0991 | 0.6 qwertyu0992 | 0.6 qwertyu0993 | 0.6 qwertyu0994 | 0.6 qwertyu0995 | 0.6 qwertyu0996 | 0.6 qwertyu0997 | 0.6 qwertyu0998 | 0.6 qwertyu0999 | 0.6 qwertyu0001 | 0.5 qwertyu0002 | 0.5 qwertyu0003 | 0.5 qwertyu0004 | 0.5 qwertyu0005 | 0.5 qwertyu0006 | 0.5 qwertyu0007 | 0.5 qwertyu0008 | 0.5 qwertyu0009 | 0.5 qwertyu0010 | 0.5 qwertyu0011 | 0.5 qwertyu0012 | 0.5 qwertyu0013 | 0.5 qwertyu0014 | 0.5 qwertyu0015 | 0.5 qwertyu0016 | 0.5 qwertyu0017 | 0.5 qwertyu0018 | 0.5 qwertyu0019 | 0.5 qwertyu0020 | 0.5 qwertyu0021 | 0.5 qwertyu0022 | 0.5 qwertyu0023 | 0.5 qwertyu0024 | 0.5 qwertyu0025 | 0.5 qwertyu0026 | 0.5 qwertyu0027 | 0.5 qwertyu0028 | 0.5 qwertyu0029 | 0.5 qwertyu0030 | 0.5 qwertyu0031 | 0.5 qwertyu0032 | 0.5 qwertyu0033 | 0.5 qwertyu0034 | 0.5 qwertyu0035 | 0.5 qwertyu0036 | 0.5 qwertyu0037 | 0.5 qwertyu0038 | 0.5 qwertyu0039 | 0.5 qwertyu0040 | 0.5 qwertyu0041 | 0.5 qwertyu0042 | 0.5 qwertyu0043 | 0.5 qwertyu0044 | 0.5 qwertyu0045 | 0.5 qwertyu0046 | 0.5 qwertyu0047 | 0.5 qwertyu0048 | 0.5 qwertyu0049 | 0.5 qwertyu0050 | 0.5 qwertyu0051 | 0.5 qwertyu0052 | 0.5 qwertyu0053 | 0.5 qwertyu0054 | 0.5 qwertyu0055 | 0.5 qwertyu0056 | 0.5 qwertyu0057 | 0.5 qwertyu0058 | 0.5 qwertyu0059 | 0.5 qwertyu0060 | 0.5 qwertyu0061 | 0.5 qwertyu0062 | 0.5 qwertyu0063 | 0.5 qwertyu0064 | 0.5 qwertyu0065 | 0.5 qwertyu0066 | 0.5 qwertyu0067 | 0.5 qwertyu0068 | 0.5 qwertyu0069 | 0.5 qwertyu0070 | 0.5 qwertyu0071 | 0.5 qwertyu0072 | 0.5 qwertyu0073 | 0.5 qwertyu0074 | 0.5 qwertyu0075 | 0.5 qwertyu0076 | 0.5 qwertyu0077 | 0.5 qwertyu0078 | 0.5 qwertyu0079 | 0.5 qwertyu0080 | 0.5 qwertyu0081 | 0.5 qwertyu0082 | 0.5 qwertyu0083 | 0.5 qwertyu0084 | 0.5 qwertyu0085 | 0.5 qwertyu0086 | 0.5 qwertyu0087 | 0.5 qwertyu0089 | 0.5 qwertyu0090 | 0.5 qwertyu0091 | 0.5 qwertyu0092 | 0.5 qwertyu0093 | 0.5 qwertyu0094 | 0.5 qwertyu0095 | 0.5 qwertyu0096 | 0.5 qwertyu0097 | 0.5 qwertyu0099 | 0.5 qwertyu0100 | 0.5 qwertyu0101 | 0.5 qwertyu0102 | 0.5 qwertyu0103 | 0.5 qwertyu0104 | 0.5 qwertyu0105 | 0.5 qwertyu0106 | 0.5 qwertyu0107 | 0.5 qwertyu0108 | 0.5 qwertyu0109 | 0.5 qwertyu0110 | 0.5 qwertyu0111 | 0.5 qwertyu0112 | 0.5 qwertyu0113 | 0.5 qwertyu0114 | 0.5 qwertyu0115 | 0.5 qwertyu0116 | 0.5 qwertyu0117 | 0.5 qwertyu0118 | 0.5 qwertyu0119 | 0.5 qwertyu0120 | 0.5 qwertyu0121 | 0.5 qwertyu0122 | 0.5 qwertyu0123 | 0.5 qwertyu0124 | 0.5 qwertyu0125 | 0.5 qwertyu0126 | 0.5 qwertyu0127 | 0.5 qwertyu0128 | 0.5 qwertyu0129 | 0.5 qwertyu0130 | 0.5 qwertyu0131 | 0.5 qwertyu0132 | 0.5 qwertyu0133 | 0.5 qwertyu0134 | 0.5 qwertyu0135 | 0.5 qwertyu0136 | 0.5 qwertyu0137 | 0.5 qwertyu0138 | 0.5 qwertyu0139 | 0.5 qwertyu0140 | 0.5 qwertyu0141 | 0.5 qwertyu0142 | 0.5 qwertyu0143 | 0.5 qwertyu0144 | 0.5 qwertyu0145 | 0.5 qwertyu0146 | 0.5 qwertyu0147 | 0.5 qwertyu0148 | 0.5 qwertyu0149 | 0.5 qwertyu0150 | 0.5 qwertyu0151 | 0.5 qwertyu0152 | 0.5 qwertyu0153 | 0.5 qwertyu0154 | 0.5 qwertyu0155 | 0.5 qwertyu0156 | 0.5 qwertyu0157 | 0.5 qwertyu0158 | 0.5 qwertyu0159 | 0.5 qwertyu0160 | 0.5 qwertyu0161 | 0.5 qwertyu0162 | 0.5 qwertyu0163 | 0.5 qwertyu0164 | 0.5 qwertyu0165 | 0.5 qwertyu0166 | 0.5 qwertyu0167 | 0.5 qwertyu0168 | 0.5 qwertyu0169 | 0.5 qwertyu0170 | 0.5 qwertyu0171 | 0.5 qwertyu0172 | 0.5 qwertyu0173 | 0.5 qwertyu0174 | 0.5 qwertyu0175 | 0.5 qwertyu0176 | 0.5 qwertyu0177 | 0.5 qwertyu0178 | 0.5 qwertyu0179 | 0.5 qwertyu0180 | 0.5 qwertyu0181 | 0.5 qwertyu0182 | 0.5 qwertyu0183 | 0.5 qwertyu0184 | 0.5 qwertyu0185 | 0.5 qwertyu0186 | 0.5 qwertyu0187 | 0.5 qwertyu0189 | 0.5 qwertyu0190 | 0.5 qwertyu0191 | 0.5 qwertyu0192 | 0.5 qwertyu0193 | 0.5 qwertyu0194 | 0.5 qwertyu0195 | 0.5 qwertyu0196 | 0.5 qwertyu0197 | 0.5 qwertyu0198 | 0.5 qwertyu0199 | 0.5 qwertyu0200 | 0.5 qwertyu0201 | 0.5 qwertyu0202 | 0.5 qwertyu0203 | 0.5 qwertyu0204 | 0.5 qwertyu0205 | 0.5 qwertyu0206 | 0.5 qwertyu0207 | 0.5 qwertyu0208 | 0.5 qwertyu0209 | 0.5 qwertyu0210 | 0.5 qwertyu0211 | 0.5 qwertyu0212 | 0.5 qwertyu0213 | 0.5 qwertyu0214 | 0.5 qwertyu0215 | 0.5 qwertyu0216 | 0.5 qwertyu0217 | 0.5 qwertyu0218 | 0.5 qwertyu0219 | 0.5 qwertyu0220 | 0.5 qwertyu0221 | 0.5 qwertyu0222 | 0.5 qwertyu0223 | 0.5 qwertyu0224 | 0.5 qwertyu0225 | 0.5 qwertyu0226 | 0.5 qwertyu0227 | 0.5 qwertyu0228 | 0.5 qwertyu0229 | 0.5 qwertyu0230 | 0.5 qwertyu0231 | 0.5 qwertyu0232 | 0.5 qwertyu0233 | 0.5 qwertyu0234 | 0.5 qwertyu0235 | 0.5 qwertyu0236 | 0.5 qwertyu0237 | 0.5 qwertyu0238 | 0.5 qwertyu0239 | 0.5 qwertyu0240 | 0.5 qwertyu0241 | 0.5 qwertyu0242 | 0.5 qwertyu0243 | 0.5 qwertyu0244 | 0.5 qwertyu0245 | 0.5 qwertyu0246 | 0.5 qwertyu0247 | 0.5 qwertyu0248 | 0.5 qwertyu0249 | 0.5 qwertyu0250 | 0.5 qwertyu0251 | 0.5 qwertyu0252 | 0.5 qwertyu0253 | 0.5 qwertyu0254 | 0.5 qwertyu0255 | 0.5 qwertyu0256 | 0.5 qwertyu0257 | 0.5 qwertyu0258 | 0.5 qwertyu0259 | 0.5 qwertyu0260 | 0.5 qwertyu0261 | 0.5 qwertyu0262 | 0.5 qwertyu0263 | 0.5 qwertyu0264 | 0.5 qwertyu0265 | 0.5 qwertyu0266 | 0.5 qwertyu0267 | 0.5 qwertyu0268 | 0.5 qwertyu0269 | 0.5 qwertyu0270 | 0.5 qwertyu0271 | 0.5 qwertyu0272 | 0.5 qwertyu0273 | 0.5 qwertyu0274 | 0.5 qwertyu0275 | 0.5 qwertyu0276 | 0.5 qwertyu0277 | 0.5 qwertyu0278 | 0.5 qwertyu0279 | 0.5 qwertyu0280 | 0.5 qwertyu0281 | 0.5 qwertyu0282 | 0.5 qwertyu0283 | 0.5 qwertyu0284 | 0.5 qwertyu0285 | 0.5 qwertyu0286 | 0.5 qwertyu0287 | 0.5 qwertyu0289 | 0.5 qwertyu0290 | 0.5 qwertyu0291 | 0.5 qwertyu0292 | 0.5 qwertyu0293 | 0.5 qwertyu0294 | 0.5 qwertyu0295 | 0.5 qwertyu0296 | 0.5 qwertyu0297 | 0.5 qwertyu0298 | 0.5 qwertyu0299 | 0.5 qwertyu0300 | 0.5 qwertyu0301 | 0.5 qwertyu0302 | 0.5 qwertyu0303 | 0.5 qwertyu0304 | 0.5 qwertyu0305 | 0.5 qwertyu0306 | 0.5 qwertyu0307 | 0.5 qwertyu0308 | 0.5 qwertyu0309 | 0.5 qwertyu0310 | 0.5 qwertyu0311 | 0.5 qwertyu0312 | 0.5 qwertyu0313 | 0.5 qwertyu0314 | 0.5 qwertyu0315 | 0.5 qwertyu0316 | 0.5 qwertyu0317 | 0.5 qwertyu0318 | 0.5 qwertyu0319 | 0.5 qwertyu0320 | 0.5 qwertyu0321 | 0.5 qwertyu0322 | 0.5 qwertyu0323 | 0.5 qwertyu0324 | 0.5 qwertyu0325 | 0.5 qwertyu0326 | 0.5 qwertyu0327 | 0.5 qwertyu0328 | 0.5 qwertyu0329 | 0.5 qwertyu0330 | 0.5 qwertyu0331 | 0.5 qwertyu0332 | 0.5 qwertyu0333 | 0.5 qwertyu0334 | 0.5 qwertyu0335 | 0.5 qwertyu0336 | 0.5 qwertyu0337 | 0.5 qwertyu0338 | 0.5 qwertyu0339 | 0.5 qwertyu0340 | 0.5 qwertyu0341 | 0.5 qwertyu0342 | 0.5 qwertyu0343 | 0.5 qwertyu0344 | 0.5 qwertyu0345 | 0.5 qwertyu0346 | 0.5 qwertyu0347 | 0.5 qwertyu0348 | 0.5 qwertyu0349 | 0.5 qwertyu0350 | 0.5 qwertyu0351 | 0.5 qwertyu0352 | 0.5 qwertyu0353 | 0.5 qwertyu0354 | 0.5 qwertyu0355 | 0.5 qwertyu0356 | 0.5 qwertyu0357 | 0.5 qwertyu0358 | 0.5 qwertyu0359 | 0.5 qwertyu0360 | 0.5 qwertyu0361 | 0.5 qwertyu0362 | 0.5 qwertyu0363 | 0.5 qwertyu0364 | 0.5 qwertyu0365 | 0.5 qwertyu0366 | 0.5 qwertyu0367 | 0.5 qwertyu0368 | 0.5 qwertyu0369 | 0.5 qwertyu0370 | 0.5 qwertyu0371 | 0.5 qwertyu0372 | 0.5 qwertyu0373 | 0.5 qwertyu0374 | 0.5 qwertyu0375 | 0.5 qwertyu0376 | 0.5 qwertyu0377 | 0.5 qwertyu0378 | 0.5 qwertyu0379 | 0.5 qwertyu0380 | 0.5 qwertyu0381 | 0.5 qwertyu0382 | 0.5 qwertyu0383 | 0.5 qwertyu0384 | 0.5 qwertyu0385 | 0.5 qwertyu0386 | 0.5 qwertyu0387 | 0.5 qwertyu0389 | 0.5 qwertyu0390 | 0.5 qwertyu0391 | 0.5 qwertyu0392 | 0.5 qwertyu0393 | 0.5 qwertyu0394 | 0.5 qwertyu0395 | 0.5 qwertyu0396 | 0.5 qwertyu0397 | 0.5 qwertyu0398 | 0.5 qwertyu0399 | 0.5 qwertyu0400 | 0.5 qwertyu0401 | 0.5 qwertyu0402 | 0.5 qwertyu0403 | 0.5 qwertyu0404 | 0.5 qwertyu0405 | 0.5 qwertyu0406 | 0.5 qwertyu0407 | 0.5 qwertyu0408 | 0.5 qwertyu0409 | 0.5 qwertyu0410 | 0.5 qwertyu0411 | 0.5 qwertyu0412 | 0.5 qwertyu0413 | 0.5 qwertyu0414 | 0.5 qwertyu0415 | 0.5 qwertyu0416 | 0.5 qwertyu0417 | 0.5 qwertyu0418 | 0.5 qwertyu0419 | 0.5 qwertyu0420 | 0.5 qwertyu0421 | 0.5 qwertyu0422 | 0.5 qwertyu0423 | 0.5 qwertyu0424 | 0.5 qwertyu0425 | 0.5 qwertyu0426 | 0.5 qwertyu0427 | 0.5 qwertyu0428 | 0.5 qwertyu0429 | 0.5 qwertyu0430 | 0.5 qwertyu0431 | 0.5 qwertyu0432 | 0.5 qwertyu0433 | 0.5 qwertyu0434 | 0.5 qwertyu0435 | 0.5 qwertyu0436 | 0.5 qwertyu0437 | 0.5 qwertyu0438 | 0.5 qwertyu0439 | 0.5 qwertyu0440 | 0.5 qwertyu0441 | 0.5 qwertyu0442 | 0.5 qwertyu0443 | 0.5 qwertyu0444 | 0.5 qwertyu0445 | 0.5 qwertyu0446 | 0.5 qwertyu0447 | 0.5 qwertyu0448 | 0.5 qwertyu0449 | 0.5 qwertyu0450 | 0.5 qwertyu0451 | 0.5 qwertyu0452 | 0.5 qwertyu0453 | 0.5 qwertyu0454 | 0.5 qwertyu0455 | 0.5 qwertyu0456 | 0.5 qwertyu0457 | 0.5 qwertyu0458 | 0.5 qwertyu0459 | 0.5 qwertyu0460 | 0.5 qwertyu0461 | 0.5 qwertyu0462 | 0.5 qwertyu0463 | 0.5 qwertyu0464 | 0.5 qwertyu0465 | 0.5 qwertyu0466 | 0.5 qwertyu0467 | 0.5 qwertyu0468 | 0.5 qwertyu0469 | 0.5 qwertyu0470 | 0.5 qwertyu0471 | 0.5 qwertyu0472 | 0.5 qwertyu0473 | 0.5 qwertyu0474 | 0.5 qwertyu0475 | 0.5 qwertyu0476 | 0.5 qwertyu0477 | 0.5 qwertyu0478 | 0.5 qwertyu0479 | 0.5 qwertyu0480 | 0.5 qwertyu0481 | 0.5 qwertyu0482 | 0.5 qwertyu0483 | 0.5 qwertyu0484 | 0.5 qwertyu0485 | 0.5 qwertyu0486 | 0.5 qwertyu0487 | 0.5 qwertyu0489 | 0.5 qwertyu0490 | 0.5 qwertyu0491 | 0.5 qwertyu0492 | 0.5 qwertyu0493 | 0.5 qwertyu0494 | 0.5 qwertyu0495 | 0.5 qwertyu0496 | 0.5 qwertyu0497 | 0.5 qwertyu0498 | 0.5 qwertyu0499 | 0.5 qwertyu0500 | 0.5 qwertyu0501 | 0.5 qwertyu0502 | 0.5 qwertyu0503 | 0.5 qwertyu0504 | 0.5 qwertyu0505 | 0.5 qwertyu0506 | 0.5 qwertyu0507 | 0.5 qwertyu0508 | 0.5 qwertyu0509 | 0.5 qwertyu0510 | 0.5 qwertyu0511 | 0.5 qwertyu0512 | 0.5 qwertyu0513 | 0.5 qwertyu0514 | 0.5 qwertyu0515 | 0.5 qwertyu0516 | 0.5 qwertyu0517 | 0.5 qwertyu0518 | 0.5 qwertyu0519 | 0.5 qwertyu0520 | 0.5 qwertyu0521 | 0.5 qwertyu0522 | 0.5 qwertyu0523 | 0.5 qwertyu0524 | 0.5 qwertyu0525 | 0.5 qwertyu0526 | 0.5 qwertyu0527 | 0.5 qwertyu0528 | 0.5 qwertyu0529 | 0.5 qwertyu0530 | 0.5 qwertyu0531 | 0.5 qwertyu0532 | 0.5 qwertyu0533 | 0.5 qwertyu0534 | 0.5 qwertyu0535 | 0.5 qwertyu0536 | 0.5 qwertyu0537 | 0.5 qwertyu0538 | 0.5 qwertyu0539 | 0.5 qwertyu0540 | 0.5 qwertyu0541 | 0.5 qwertyu0542 | 0.5 qwertyu0543 | 0.5 qwertyu0544 | 0.5 qwertyu0545 | 0.5 qwertyu0546 | 0.5 qwertyu0547 | 0.5 qwertyu0548 | 0.5 qwertyu0549 | 0.5 qwertyu0550 | 0.5 qwertyu0551 | 0.5 qwertyu0552 | 0.5 qwertyu0553 | 0.5 qwertyu0554 | 0.5 qwertyu0555 | 0.5 qwertyu0556 | 0.5 qwertyu0557 | 0.5 qwertyu0558 | 0.5 qwertyu0559 | 0.5 qwertyu0560 | 0.5 qwertyu0561 | 0.5 qwertyu0562 | 0.5 qwertyu0563 | 0.5 qwertyu0564 | 0.5 qwertyu0565 | 0.5 qwertyu0566 | 0.5 qwertyu0567 | 0.5 qwertyu0568 | 0.5 qwertyu0569 | 0.5 qwertyu0570 | 0.5 qwertyu0571 | 0.5 qwertyu0572 | 0.5 qwertyu0573 | 0.5 qwertyu0574 | 0.5 qwertyu0575 | 0.5 qwertyu0576 | 0.5 qwertyu0577 | 0.5 qwertyu0578 | 0.5 qwertyu0579 | 0.5 qwertyu0580 | 0.5 qwertyu0581 | 0.5 qwertyu0582 | 0.5 qwertyu0583 | 0.5 qwertyu0584 | 0.5 qwertyu0585 | 0.5 qwertyu0586 | 0.5 qwertyu0587 | 0.5 qwertyu0589 | 0.5 qwertyu0590 | 0.5 qwertyu0591 | 0.5 qwertyu0592 | 0.5 qwertyu0593 | 0.5 qwertyu0594 | 0.5 qwertyu0595 | 0.5 qwertyu0596 | 0.5 qwertyu0597 | 0.5 qwertyu0598 | 0.5 qwertyu0599 | 0.5 qwertyu0600 | 0.5 qwertyu0601 | 0.5 qwertyu0602 | 0.5 qwertyu0603 | 0.5 qwertyu0604 | 0.5 qwertyu0605 | 0.5 qwertyu0606 | 0.5 qwertyu0607 | 0.5 qwertyu0608 | 0.5 qwertyu0609 | 0.5 qwertyu0610 | 0.5 qwertyu0611 | 0.5 qwertyu0612 | 0.5 qwertyu0613 | 0.5 qwertyu0614 | 0.5 qwertyu0615 | 0.5 qwertyu0616 | 0.5 qwertyu0617 | 0.5 qwertyu0618 | 0.5 qwertyu0619 | 0.5 qwertyu0620 | 0.5 qwertyu0621 | 0.5 qwertyu0622 | 0.5 qwertyu0623 | 0.5 qwertyu0624 | 0.5 qwertyu0625 | 0.5 qwertyu0626 | 0.5 qwertyu0627 | 0.5 qwertyu0628 | 0.5 qwertyu0629 | 0.5 qwertyu0630 | 0.5 qwertyu0631 | 0.5 qwertyu0632 | 0.5 qwertyu0633 | 0.5 qwertyu0634 | 0.5 qwertyu0635 | 0.5 qwertyu0636 | 0.5 qwertyu0637 | 0.5 qwertyu0638 | 0.5 qwertyu0639 | 0.5 qwertyu0640 | 0.5 qwertyu0641 | 0.5 qwertyu0642 | 0.5 qwertyu0643 | 0.5 qwertyu0644 | 0.5 qwertyu0645 | 0.5 qwertyu0646 | 0.5 qwertyu0647 | 0.5 qwertyu0648 | 0.5 qwertyu0649 | 0.5 qwertyu0650 | 0.5 qwertyu0651 | 0.5 qwertyu0652 | 0.5 qwertyu0653 | 0.5 qwertyu0654 | 0.5 qwertyu0655 | 0.5 qwertyu0656 | 0.5 qwertyu0657 | 0.5 qwertyu0658 | 0.5 qwertyu0659 | 0.5 qwertyu0660 | 0.5 qwertyu0661 | 0.5 qwertyu0662 | 0.5 qwertyu0663 | 0.5 qwertyu0664 | 0.5 qwertyu0665 | 0.5 qwertyu0666 | 0.5 qwertyu0667 | 0.5 qwertyu0668 | 0.5 qwertyu0669 | 0.5 qwertyu0670 | 0.5 qwertyu0671 | 0.5 qwertyu0672 | 0.5 qwertyu0673 | 0.5 qwertyu0674 | 0.5 qwertyu0675 | 0.5 qwertyu0676 | 0.5 qwertyu0677 | 0.5 qwertyu0678 | 0.5 qwertyu0679 | 0.5 qwertyu0680 | 0.5 qwertyu0681 | 0.5 qwertyu0682 | 0.5 qwertyu0683 | 0.5 qwertyu0684 | 0.5 qwertyu0685 | 0.5 qwertyu0686 | 0.5 qwertyu0687 | 0.5 qwertyu0689 | 0.5 qwertyu0690 | 0.5 qwertyu0691 | 0.5 qwertyu0692 | 0.5 qwertyu0693 | 0.5 qwertyu0694 | 0.5 qwertyu0695 | 0.5 qwertyu0696 | 0.5 qwertyu0697 | 0.5 qwertyu0698 | 0.5 qwertyu0699 | 0.5 qwertyu0700 | 0.5 qwertyu0701 | 0.5 qwertyu0702 | 0.5 qwertyu0703 | 0.5 qwertyu0704 | 0.5 qwertyu0705 | 0.5 qwertyu0706 | 0.5 qwertyu0707 | 0.5 qwertyu0708 | 0.5 qwertyu0709 | 0.5 qwertyu0710 | 0.5 qwertyu0711 | 0.5 qwertyu0712 | 0.5 qwertyu0713 | 0.5 qwertyu0714 | 0.5 qwertyu0715 | 0.5 qwertyu0716 | 0.5 qwertyu0717 | 0.5 qwertyu0718 | 0.5 qwertyu0719 | 0.5 qwertyu0720 | 0.5 qwertyu0721 | 0.5 qwertyu0722 | 0.5 qwertyu0723 | 0.5 qwertyu0724 | 0.5 qwertyu0725 | 0.5 qwertyu0726 | 0.5 qwertyu0727 | 0.5 qwertyu0728 | 0.5 qwertyu0729 | 0.5 qwertyu0730 | 0.5 qwertyu0731 | 0.5 qwertyu0732 | 0.5 qwertyu0733 | 0.5 qwertyu0734 | 0.5 qwertyu0735 | 0.5 qwertyu0736 | 0.5 qwertyu0737 | 0.5 qwertyu0738 | 0.5 qwertyu0739 | 0.5 qwertyu0740 | 0.5 qwertyu0741 | 0.5 qwertyu0742 | 0.5 qwertyu0743 | 0.5 qwertyu0744 | 0.5 qwertyu0745 | 0.5 qwertyu0746 | 0.5 qwertyu0747 | 0.5 qwertyu0748 | 0.5 qwertyu0749 | 0.5 qwertyu0750 | 0.5 qwertyu0751 | 0.5 qwertyu0752 | 0.5 qwertyu0753 | 0.5 qwertyu0754 | 0.5 qwertyu0755 | 0.5 qwertyu0756 | 0.5 qwertyu0757 | 0.5 qwertyu0758 | 0.5 qwertyu0759 | 0.5 qwertyu0760 | 0.5 qwertyu0761 | 0.5 qwertyu0762 | 0.5 qwertyu0763 | 0.5 qwertyu0764 | 0.5 qwertyu0765 | 0.5 qwertyu0766 | 0.5 qwertyu0767 | 0.5 qwertyu0768 | 0.5 qwertyu0769 | 0.5 qwertyu0770 | 0.5 qwertyu0771 | 0.5 qwertyu0772 | 0.5 qwertyu0773 | 0.5 qwertyu0774 | 0.5 qwertyu0775 | 0.5 qwertyu0776 | 0.5 qwertyu0777 | 0.5 qwertyu0778 | 0.5 qwertyu0779 | 0.5 qwertyu0780 | 0.5 qwertyu0781 | 0.5 qwertyu0782 | 0.5 qwertyu0783 | 0.5 qwertyu0784 | 0.5 qwertyu0785 | 0.5 qwertyu0786 | 0.5 qwertyu0787 | 0.5 qwertyu0789 | 0.5 qwertyu0790 | 0.5 qwertyu0791 | 0.5 qwertyu0792 | 0.5 qwertyu0793 | 0.5 qwertyu0794 | 0.5 qwertyu0795 | 0.5 qwertyu0796 | 0.5 qwertyu0797 | 0.5 qwertyu0798 | 0.5 qwertyu0799 | 0.5 qwertyu0800 | 0.5 qwertyu0801 | 0.5 qwertyu0802 | 0.5 qwertyu0803 | 0.5 qwertyu0804 | 0.5 qwertyu0805 | 0.5 qwertyu0806 | 0.5 qwertyu0807 | 0.5 qwertyu0808 | 0.5 qwertyu0809 | 0.5 qwertyu0810 | 0.5 qwertyu0811 | 0.5 qwertyu0812 | 0.5 qwertyu0813 | 0.5 qwertyu0814 | 0.5 qwertyu0815 | 0.5 qwertyu0816 | 0.5 qwertyu0817 | 0.5 qwertyu0818 | 0.5 qwertyu0819 | 0.5 qwertyu0820 | 0.5 qwertyu0821 | 0.5 qwertyu0822 | 0.5 qwertyu0823 | 0.5 qwertyu0824 | 0.5 qwertyu0825 | 0.5 qwertyu0826 | 0.5 qwertyu0827 | 0.5 qwertyu0828 | 0.5 qwertyu0829 | 0.5 qwertyu0830 | 0.5 qwertyu0831 | 0.5 qwertyu0832 | 0.5 qwertyu0833 | 0.5 qwertyu0834 | 0.5 qwertyu0835 | 0.5 qwertyu0836 | 0.5 qwertyu0837 | 0.5 qwertyu0838 | 0.5 qwertyu0839 | 0.5 qwertyu0840 | 0.5 qwertyu0841 | 0.5 qwertyu0842 | 0.5 qwertyu0843 | 0.5 qwertyu0844 | 0.5 qwertyu0845 | 0.5 qwertyu0846 | 0.5 qwertyu0847 | 0.5 qwertyu0848 | 0.5 qwertyu0849 | 0.5 qwertyu0850 | 0.5 qwertyu0851 | 0.5 qwertyu0852 | 0.5 qwertyu0853 | 0.5 qwertyu0854 | 0.5 qwertyu0855 | 0.5 qwertyu0856 | 0.5 qwertyu0857 | 0.5 qwertyu0858 | 0.5 qwertyu0859 | 0.5 qwertyu0860 | 0.5 qwertyu0861 | 0.5 qwertyu0862 | 0.5 qwertyu0863 | 0.5 qwertyu0864 | 0.5 qwertyu0865 | 0.5 qwertyu0866 | 0.5 qwertyu0867 | 0.5 qwertyu0868 | 0.5 qwertyu0869 | 0.5 qwertyu0870 | 0.5 qwertyu0871 | 0.5 qwertyu0872 | 0.5 qwertyu0873 | 0.5 qwertyu0874 | 0.5 qwertyu0875 | 0.5 qwertyu0876 | 0.5 qwertyu0877 | 0.5 qwertyu0878 | 0.5 qwertyu0879 | 0.5 qwertyu0880 | 0.5 qwertyu0881 | 0.5 qwertyu0882 | 0.5 qwertyu0883 | 0.5 qwertyu0884 | 0.5 qwertyu0885 | 0.5 qwertyu0886 | 0.5 qwertyu0887 | 0.5 qwertyu0889 | 0.5 qwertyu0890 | 0.5 qwertyu0891 | 0.5 qwertyu0892 | 0.5 qwertyu0893 | 0.5 qwertyu0894 | 0.5 qwertyu0895 | 0.5 qwertyu0896 | 0.5 qwertyu0897 | 0.5 qwertyu0898 | 0.5 qwertyu0899 | 0.5 qwertyu1000 | 0.411765 (1000 rows) select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.6 qwertyu0980 | 0.411765 qwertyu0981 | 0.411765 qwertyu0982 | 0.411765 qwertyu0983 | 0.411765 qwertyu0984 | 0.411765 qwertyu0985 | 0.411765 qwertyu0986 | 0.411765 qwertyu0987 | 0.411765 qwertyu0989 | 0.411765 qwertyu0088 | 0.333333 qwertyu0098 | 0.333333 qwertyu0188 | 0.333333 qwertyu0288 | 0.333333 qwertyu0388 | 0.333333 qwertyu0488 | 0.333333 qwertyu0588 | 0.333333 qwertyu0688 | 0.333333 qwertyu0788 | 0.333333 qwertyu0888 | 0.333333 qwertyu0900 | 0.333333 qwertyu0901 | 0.333333 qwertyu0902 | 0.333333 qwertyu0903 | 0.333333 qwertyu0904 | 0.333333 qwertyu0905 | 0.333333 qwertyu0906 | 0.333333 qwertyu0907 | 0.333333 qwertyu0908 | 0.333333 qwertyu0909 | 0.333333 qwertyu0910 | 0.333333 qwertyu0911 | 0.333333 qwertyu0912 | 0.333333 qwertyu0913 | 0.333333 qwertyu0914 | 0.333333 qwertyu0915 | 0.333333 qwertyu0916 | 0.333333 qwertyu0917 | 0.333333 qwertyu0918 | 0.333333 qwertyu0919 | 0.333333 qwertyu0920 | 0.333333 qwertyu0921 | 0.333333 qwertyu0922 | 0.333333 qwertyu0923 | 0.333333 qwertyu0924 | 0.333333 qwertyu0925 | 0.333333 qwertyu0926 | 0.333333 qwertyu0927 | 0.333333 qwertyu0928 | 0.333333 qwertyu0929 | 0.333333 qwertyu0930 | 0.333333 qwertyu0931 | 0.333333 qwertyu0932 | 0.333333 qwertyu0933 | 0.333333 qwertyu0934 | 0.333333 qwertyu0935 | 0.333333 qwertyu0936 | 0.333333 qwertyu0937 | 0.333333 qwertyu0938 | 0.333333 qwertyu0939 | 0.333333 qwertyu0940 | 0.333333 qwertyu0941 | 0.333333 qwertyu0942 | 0.333333 qwertyu0943 | 0.333333 qwertyu0944 | 0.333333 qwertyu0945 | 0.333333 qwertyu0946 | 0.333333 qwertyu0947 | 0.333333 qwertyu0948 | 0.333333 qwertyu0949 | 0.333333 qwertyu0950 | 0.333333 qwertyu0951 | 0.333333 qwertyu0952 | 0.333333 qwertyu0953 | 0.333333 qwertyu0954 | 0.333333 qwertyu0955 | 0.333333 qwertyu0956 | 0.333333 qwertyu0957 | 0.333333 qwertyu0958 | 0.333333 qwertyu0959 | 0.333333 qwertyu0960 | 0.333333 qwertyu0961 | 0.333333 qwertyu0962 | 0.333333 qwertyu0963 | 0.333333 qwertyu0964 | 0.333333 qwertyu0965 | 0.333333 qwertyu0966 | 0.333333 qwertyu0967 | 0.333333 qwertyu0968 | 0.333333 qwertyu0969 | 0.333333 qwertyu0970 | 0.333333 qwertyu0971 | 0.333333 qwertyu0972 | 0.333333 qwertyu0973 | 0.333333 qwertyu0974 | 0.333333 qwertyu0975 | 0.333333 qwertyu0976 | 0.333333 qwertyu0977 | 0.333333 qwertyu0978 | 0.333333 qwertyu0979 | 0.333333 qwertyu0990 | 0.333333 qwertyu0991 | 0.333333 qwertyu0992 | 0.333333 qwertyu0993 | 0.333333 qwertyu0994 | 0.333333 qwertyu0995 | 0.333333 qwertyu0996 | 0.333333 qwertyu0997 | 0.333333 qwertyu0998 | 0.333333 qwertyu0999 | 0.333333 (110 rows) select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.333333 (1 row) select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2; ?column? | t ----------+------------- 0.411765 | qwertyu0988 0.5 | qwertyu0987 (2 rows) create index trgm_idx on test_trgm using gist (t gist_trgm_ops); set enable_seqscan=off; select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 1 qwertyu0980 | 0.714286 qwertyu0981 | 0.714286 qwertyu0982 | 0.714286 qwertyu0983 | 0.714286 qwertyu0984 | 0.714286 qwertyu0985 | 0.714286 qwertyu0986 | 0.714286 qwertyu0987 | 0.714286 qwertyu0989 | 0.714286 qwertyu0088 | 0.6 qwertyu0098 | 0.6 qwertyu0188 | 0.6 qwertyu0288 | 0.6 qwertyu0388 | 0.6 qwertyu0488 | 0.6 qwertyu0588 | 0.6 qwertyu0688 | 0.6 qwertyu0788 | 0.6 qwertyu0888 | 0.6 qwertyu0900 | 0.6 qwertyu0901 | 0.6 qwertyu0902 | 0.6 qwertyu0903 | 0.6 qwertyu0904 | 0.6 qwertyu0905 | 0.6 qwertyu0906 | 0.6 qwertyu0907 | 0.6 qwertyu0908 | 0.6 qwertyu0909 | 0.6 qwertyu0910 | 0.6 qwertyu0911 | 0.6 qwertyu0912 | 0.6 qwertyu0913 | 0.6 qwertyu0914 | 0.6 qwertyu0915 | 0.6 qwertyu0916 | 0.6 qwertyu0917 | 0.6 qwertyu0918 | 0.6 qwertyu0919 | 0.6 qwertyu0920 | 0.6 qwertyu0921 | 0.6 qwertyu0922 | 0.6 qwertyu0923 | 0.6 qwertyu0924 | 0.6 qwertyu0925 | 0.6 qwertyu0926 | 0.6 qwertyu0927 | 0.6 qwertyu0928 | 0.6 qwertyu0929 | 0.6 qwertyu0930 | 0.6 qwertyu0931 | 0.6 qwertyu0932 | 0.6 qwertyu0933 | 0.6 qwertyu0934 | 0.6 qwertyu0935 | 0.6 qwertyu0936 | 0.6 qwertyu0937 | 0.6 qwertyu0938 | 0.6 qwertyu0939 | 0.6 qwertyu0940 | 0.6 qwertyu0941 | 0.6 qwertyu0942 | 0.6 qwertyu0943 | 0.6 qwertyu0944 | 0.6 qwertyu0945 | 0.6 qwertyu0946 | 0.6 qwertyu0947 | 0.6 qwertyu0948 | 0.6 qwertyu0949 | 0.6 qwertyu0950 | 0.6 qwertyu0951 | 0.6 qwertyu0952 | 0.6 qwertyu0953 | 0.6 qwertyu0954 | 0.6 qwertyu0955 | 0.6 qwertyu0956 | 0.6 qwertyu0957 | 0.6 qwertyu0958 | 0.6 qwertyu0959 | 0.6 qwertyu0960 | 0.6 qwertyu0961 | 0.6 qwertyu0962 | 0.6 qwertyu0963 | 0.6 qwertyu0964 | 0.6 qwertyu0965 | 0.6 qwertyu0966 | 0.6 qwertyu0967 | 0.6 qwertyu0968 | 0.6 qwertyu0969 | 0.6 qwertyu0970 | 0.6 qwertyu0971 | 0.6 qwertyu0972 | 0.6 qwertyu0973 | 0.6 qwertyu0974 | 0.6 qwertyu0975 | 0.6 qwertyu0976 | 0.6 qwertyu0977 | 0.6 qwertyu0978 | 0.6 qwertyu0979 | 0.6 qwertyu0990 | 0.6 qwertyu0991 | 0.6 qwertyu0992 | 0.6 qwertyu0993 | 0.6 qwertyu0994 | 0.6 qwertyu0995 | 0.6 qwertyu0996 | 0.6 qwertyu0997 | 0.6 qwertyu0998 | 0.6 qwertyu0999 | 0.6 qwertyu0001 | 0.5 qwertyu0002 | 0.5 qwertyu0003 | 0.5 qwertyu0004 | 0.5 qwertyu0005 | 0.5 qwertyu0006 | 0.5 qwertyu0007 | 0.5 qwertyu0008 | 0.5 qwertyu0009 | 0.5 qwertyu0010 | 0.5 qwertyu0011 | 0.5 qwertyu0012 | 0.5 qwertyu0013 | 0.5 qwertyu0014 | 0.5 qwertyu0015 | 0.5 qwertyu0016 | 0.5 qwertyu0017 | 0.5 qwertyu0018 | 0.5 qwertyu0019 | 0.5 qwertyu0020 | 0.5 qwertyu0021 | 0.5 qwertyu0022 | 0.5 qwertyu0023 | 0.5 qwertyu0024 | 0.5 qwertyu0025 | 0.5 qwertyu0026 | 0.5 qwertyu0027 | 0.5 qwertyu0028 | 0.5 qwertyu0029 | 0.5 qwertyu0030 | 0.5 qwertyu0031 | 0.5 qwertyu0032 | 0.5 qwertyu0033 | 0.5 qwertyu0034 | 0.5 qwertyu0035 | 0.5 qwertyu0036 | 0.5 qwertyu0037 | 0.5 qwertyu0038 | 0.5 qwertyu0039 | 0.5 qwertyu0040 | 0.5 qwertyu0041 | 0.5 qwertyu0042 | 0.5 qwertyu0043 | 0.5 qwertyu0044 | 0.5 qwertyu0045 | 0.5 qwertyu0046 | 0.5 qwertyu0047 | 0.5 qwertyu0048 | 0.5 qwertyu0049 | 0.5 qwertyu0050 | 0.5 qwertyu0051 | 0.5 qwertyu0052 | 0.5 qwertyu0053 | 0.5 qwertyu0054 | 0.5 qwertyu0055 | 0.5 qwertyu0056 | 0.5 qwertyu0057 | 0.5 qwertyu0058 | 0.5 qwertyu0059 | 0.5 qwertyu0060 | 0.5 qwertyu0061 | 0.5 qwertyu0062 | 0.5 qwertyu0063 | 0.5 qwertyu0064 | 0.5 qwertyu0065 | 0.5 qwertyu0066 | 0.5 qwertyu0067 | 0.5 qwertyu0068 | 0.5 qwertyu0069 | 0.5 qwertyu0070 | 0.5 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qwertyu0850 | 0.5 qwertyu0851 | 0.5 qwertyu0852 | 0.5 qwertyu0853 | 0.5 qwertyu0854 | 0.5 qwertyu0855 | 0.5 qwertyu0856 | 0.5 qwertyu0857 | 0.5 qwertyu0858 | 0.5 qwertyu0859 | 0.5 qwertyu0860 | 0.5 qwertyu0861 | 0.5 qwertyu0862 | 0.5 qwertyu0863 | 0.5 qwertyu0864 | 0.5 qwertyu0865 | 0.5 qwertyu0866 | 0.5 qwertyu0867 | 0.5 qwertyu0868 | 0.5 qwertyu0869 | 0.5 qwertyu0870 | 0.5 qwertyu0871 | 0.5 qwertyu0872 | 0.5 qwertyu0873 | 0.5 qwertyu0874 | 0.5 qwertyu0875 | 0.5 qwertyu0876 | 0.5 qwertyu0877 | 0.5 qwertyu0878 | 0.5 qwertyu0879 | 0.5 qwertyu0880 | 0.5 qwertyu0881 | 0.5 qwertyu0882 | 0.5 qwertyu0883 | 0.5 qwertyu0884 | 0.5 qwertyu0885 | 0.5 qwertyu0886 | 0.5 qwertyu0887 | 0.5 qwertyu0889 | 0.5 qwertyu0890 | 0.5 qwertyu0891 | 0.5 qwertyu0892 | 0.5 qwertyu0893 | 0.5 qwertyu0894 | 0.5 qwertyu0895 | 0.5 qwertyu0896 | 0.5 qwertyu0897 | 0.5 qwertyu0898 | 0.5 qwertyu0899 | 0.5 qwertyu1000 | 0.411765 (1000 rows) select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.6 qwertyu0980 | 0.411765 qwertyu0981 | 0.411765 qwertyu0982 | 0.411765 qwertyu0983 | 0.411765 qwertyu0984 | 0.411765 qwertyu0985 | 0.411765 qwertyu0986 | 0.411765 qwertyu0987 | 0.411765 qwertyu0989 | 0.411765 qwertyu0088 | 0.333333 qwertyu0098 | 0.333333 qwertyu0188 | 0.333333 qwertyu0288 | 0.333333 qwertyu0388 | 0.333333 qwertyu0488 | 0.333333 qwertyu0588 | 0.333333 qwertyu0688 | 0.333333 qwertyu0788 | 0.333333 qwertyu0888 | 0.333333 qwertyu0900 | 0.333333 qwertyu0901 | 0.333333 qwertyu0902 | 0.333333 qwertyu0903 | 0.333333 qwertyu0904 | 0.333333 qwertyu0905 | 0.333333 qwertyu0906 | 0.333333 qwertyu0907 | 0.333333 qwertyu0908 | 0.333333 qwertyu0909 | 0.333333 qwertyu0910 | 0.333333 qwertyu0911 | 0.333333 qwertyu0912 | 0.333333 qwertyu0913 | 0.333333 qwertyu0914 | 0.333333 qwertyu0915 | 0.333333 qwertyu0916 | 0.333333 qwertyu0917 | 0.333333 qwertyu0918 | 0.333333 qwertyu0919 | 0.333333 qwertyu0920 | 0.333333 qwertyu0921 | 0.333333 qwertyu0922 | 0.333333 qwertyu0923 | 0.333333 qwertyu0924 | 0.333333 qwertyu0925 | 0.333333 qwertyu0926 | 0.333333 qwertyu0927 | 0.333333 qwertyu0928 | 0.333333 qwertyu0929 | 0.333333 qwertyu0930 | 0.333333 qwertyu0931 | 0.333333 qwertyu0932 | 0.333333 qwertyu0933 | 0.333333 qwertyu0934 | 0.333333 qwertyu0935 | 0.333333 qwertyu0936 | 0.333333 qwertyu0937 | 0.333333 qwertyu0938 | 0.333333 qwertyu0939 | 0.333333 qwertyu0940 | 0.333333 qwertyu0941 | 0.333333 qwertyu0942 | 0.333333 qwertyu0943 | 0.333333 qwertyu0944 | 0.333333 qwertyu0945 | 0.333333 qwertyu0946 | 0.333333 qwertyu0947 | 0.333333 qwertyu0948 | 0.333333 qwertyu0949 | 0.333333 qwertyu0950 | 0.333333 qwertyu0951 | 0.333333 qwertyu0952 | 0.333333 qwertyu0953 | 0.333333 qwertyu0954 | 0.333333 qwertyu0955 | 0.333333 qwertyu0956 | 0.333333 qwertyu0957 | 0.333333 qwertyu0958 | 0.333333 qwertyu0959 | 0.333333 qwertyu0960 | 0.333333 qwertyu0961 | 0.333333 qwertyu0962 | 0.333333 qwertyu0963 | 0.333333 qwertyu0964 | 0.333333 qwertyu0965 | 0.333333 qwertyu0966 | 0.333333 qwertyu0967 | 0.333333 qwertyu0968 | 0.333333 qwertyu0969 | 0.333333 qwertyu0970 | 0.333333 qwertyu0971 | 0.333333 qwertyu0972 | 0.333333 qwertyu0973 | 0.333333 qwertyu0974 | 0.333333 qwertyu0975 | 0.333333 qwertyu0976 | 0.333333 qwertyu0977 | 0.333333 qwertyu0978 | 0.333333 qwertyu0979 | 0.333333 qwertyu0990 | 0.333333 qwertyu0991 | 0.333333 qwertyu0992 | 0.333333 qwertyu0993 | 0.333333 qwertyu0994 | 0.333333 qwertyu0995 | 0.333333 qwertyu0996 | 0.333333 qwertyu0997 | 0.333333 qwertyu0998 | 0.333333 qwertyu0999 | 0.333333 (110 rows) select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.333333 (1 row) explain (costs off) select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2; QUERY PLAN --------------------------------------------------- Limit -> Index Scan using trgm_idx on test_trgm Order By: (t <-> 'q0987wertyu0988'::text) (3 rows) select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2; ?column? | t ----------+------------- 0.411765 | qwertyu0988 0.5 | qwertyu0987 (2 rows) drop index trgm_idx; create index trgm_idx on test_trgm using gin (t gin_trgm_ops); set enable_seqscan=off; select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 1 qwertyu0980 | 0.714286 qwertyu0981 | 0.714286 qwertyu0982 | 0.714286 qwertyu0983 | 0.714286 qwertyu0984 | 0.714286 qwertyu0985 | 0.714286 qwertyu0986 | 0.714286 qwertyu0987 | 0.714286 qwertyu0989 | 0.714286 qwertyu0088 | 0.6 qwertyu0098 | 0.6 qwertyu0188 | 0.6 qwertyu0288 | 0.6 qwertyu0388 | 0.6 qwertyu0488 | 0.6 qwertyu0588 | 0.6 qwertyu0688 | 0.6 qwertyu0788 | 0.6 qwertyu0888 | 0.6 qwertyu0900 | 0.6 qwertyu0901 | 0.6 qwertyu0902 | 0.6 qwertyu0903 | 0.6 qwertyu0904 | 0.6 qwertyu0905 | 0.6 qwertyu0906 | 0.6 qwertyu0907 | 0.6 qwertyu0908 | 0.6 qwertyu0909 | 0.6 qwertyu0910 | 0.6 qwertyu0911 | 0.6 qwertyu0912 | 0.6 qwertyu0913 | 0.6 qwertyu0914 | 0.6 qwertyu0915 | 0.6 qwertyu0916 | 0.6 qwertyu0917 | 0.6 qwertyu0918 | 0.6 qwertyu0919 | 0.6 qwertyu0920 | 0.6 qwertyu0921 | 0.6 qwertyu0922 | 0.6 qwertyu0923 | 0.6 qwertyu0924 | 0.6 qwertyu0925 | 0.6 qwertyu0926 | 0.6 qwertyu0927 | 0.6 qwertyu0928 | 0.6 qwertyu0929 | 0.6 qwertyu0930 | 0.6 qwertyu0931 | 0.6 qwertyu0932 | 0.6 qwertyu0933 | 0.6 qwertyu0934 | 0.6 qwertyu0935 | 0.6 qwertyu0936 | 0.6 qwertyu0937 | 0.6 qwertyu0938 | 0.6 qwertyu0939 | 0.6 qwertyu0940 | 0.6 qwertyu0941 | 0.6 qwertyu0942 | 0.6 qwertyu0943 | 0.6 qwertyu0944 | 0.6 qwertyu0945 | 0.6 qwertyu0946 | 0.6 qwertyu0947 | 0.6 qwertyu0948 | 0.6 qwertyu0949 | 0.6 qwertyu0950 | 0.6 qwertyu0951 | 0.6 qwertyu0952 | 0.6 qwertyu0953 | 0.6 qwertyu0954 | 0.6 qwertyu0955 | 0.6 qwertyu0956 | 0.6 qwertyu0957 | 0.6 qwertyu0958 | 0.6 qwertyu0959 | 0.6 qwertyu0960 | 0.6 qwertyu0961 | 0.6 qwertyu0962 | 0.6 qwertyu0963 | 0.6 qwertyu0964 | 0.6 qwertyu0965 | 0.6 qwertyu0966 | 0.6 qwertyu0967 | 0.6 qwertyu0968 | 0.6 qwertyu0969 | 0.6 qwertyu0970 | 0.6 qwertyu0971 | 0.6 qwertyu0972 | 0.6 qwertyu0973 | 0.6 qwertyu0974 | 0.6 qwertyu0975 | 0.6 qwertyu0976 | 0.6 qwertyu0977 | 0.6 qwertyu0978 | 0.6 qwertyu0979 | 0.6 qwertyu0990 | 0.6 qwertyu0991 | 0.6 qwertyu0992 | 0.6 qwertyu0993 | 0.6 qwertyu0994 | 0.6 qwertyu0995 | 0.6 qwertyu0996 | 0.6 qwertyu0997 | 0.6 qwertyu0998 | 0.6 qwertyu0999 | 0.6 qwertyu0001 | 0.5 qwertyu0002 | 0.5 qwertyu0003 | 0.5 qwertyu0004 | 0.5 qwertyu0005 | 0.5 qwertyu0006 | 0.5 qwertyu0007 | 0.5 qwertyu0008 | 0.5 qwertyu0009 | 0.5 qwertyu0010 | 0.5 qwertyu0011 | 0.5 qwertyu0012 | 0.5 qwertyu0013 | 0.5 qwertyu0014 | 0.5 qwertyu0015 | 0.5 qwertyu0016 | 0.5 qwertyu0017 | 0.5 qwertyu0018 | 0.5 qwertyu0019 | 0.5 qwertyu0020 | 0.5 qwertyu0021 | 0.5 qwertyu0022 | 0.5 qwertyu0023 | 0.5 qwertyu0024 | 0.5 qwertyu0025 | 0.5 qwertyu0026 | 0.5 qwertyu0027 | 0.5 qwertyu0028 | 0.5 qwertyu0029 | 0.5 qwertyu0030 | 0.5 qwertyu0031 | 0.5 qwertyu0032 | 0.5 qwertyu0033 | 0.5 qwertyu0034 | 0.5 qwertyu0035 | 0.5 qwertyu0036 | 0.5 qwertyu0037 | 0.5 qwertyu0038 | 0.5 qwertyu0039 | 0.5 qwertyu0040 | 0.5 qwertyu0041 | 0.5 qwertyu0042 | 0.5 qwertyu0043 | 0.5 qwertyu0044 | 0.5 qwertyu0045 | 0.5 qwertyu0046 | 0.5 qwertyu0047 | 0.5 qwertyu0048 | 0.5 qwertyu0049 | 0.5 qwertyu0050 | 0.5 qwertyu0051 | 0.5 qwertyu0052 | 0.5 qwertyu0053 | 0.5 qwertyu0054 | 0.5 qwertyu0055 | 0.5 qwertyu0056 | 0.5 qwertyu0057 | 0.5 qwertyu0058 | 0.5 qwertyu0059 | 0.5 qwertyu0060 | 0.5 qwertyu0061 | 0.5 qwertyu0062 | 0.5 qwertyu0063 | 0.5 qwertyu0064 | 0.5 qwertyu0065 | 0.5 qwertyu0066 | 0.5 qwertyu0067 | 0.5 qwertyu0068 | 0.5 qwertyu0069 | 0.5 qwertyu0070 | 0.5 qwertyu0071 | 0.5 qwertyu0072 | 0.5 qwertyu0073 | 0.5 qwertyu0074 | 0.5 qwertyu0075 | 0.5 qwertyu0076 | 0.5 qwertyu0077 | 0.5 qwertyu0078 | 0.5 qwertyu0079 | 0.5 qwertyu0080 | 0.5 qwertyu0081 | 0.5 qwertyu0082 | 0.5 qwertyu0083 | 0.5 qwertyu0084 | 0.5 qwertyu0085 | 0.5 qwertyu0086 | 0.5 qwertyu0087 | 0.5 qwertyu0089 | 0.5 qwertyu0090 | 0.5 qwertyu0091 | 0.5 qwertyu0092 | 0.5 qwertyu0093 | 0.5 qwertyu0094 | 0.5 qwertyu0095 | 0.5 qwertyu0096 | 0.5 qwertyu0097 | 0.5 qwertyu0099 | 0.5 qwertyu0100 | 0.5 qwertyu0101 | 0.5 qwertyu0102 | 0.5 qwertyu0103 | 0.5 qwertyu0104 | 0.5 qwertyu0105 | 0.5 qwertyu0106 | 0.5 qwertyu0107 | 0.5 qwertyu0108 | 0.5 qwertyu0109 | 0.5 qwertyu0110 | 0.5 qwertyu0111 | 0.5 qwertyu0112 | 0.5 qwertyu0113 | 0.5 qwertyu0114 | 0.5 qwertyu0115 | 0.5 qwertyu0116 | 0.5 qwertyu0117 | 0.5 qwertyu0118 | 0.5 qwertyu0119 | 0.5 qwertyu0120 | 0.5 qwertyu0121 | 0.5 qwertyu0122 | 0.5 qwertyu0123 | 0.5 qwertyu0124 | 0.5 qwertyu0125 | 0.5 qwertyu0126 | 0.5 qwertyu0127 | 0.5 qwertyu0128 | 0.5 qwertyu0129 | 0.5 qwertyu0130 | 0.5 qwertyu0131 | 0.5 qwertyu0132 | 0.5 qwertyu0133 | 0.5 qwertyu0134 | 0.5 qwertyu0135 | 0.5 qwertyu0136 | 0.5 qwertyu0137 | 0.5 qwertyu0138 | 0.5 qwertyu0139 | 0.5 qwertyu0140 | 0.5 qwertyu0141 | 0.5 qwertyu0142 | 0.5 qwertyu0143 | 0.5 qwertyu0144 | 0.5 qwertyu0145 | 0.5 qwertyu0146 | 0.5 qwertyu0147 | 0.5 qwertyu0148 | 0.5 qwertyu0149 | 0.5 qwertyu0150 | 0.5 qwertyu0151 | 0.5 qwertyu0152 | 0.5 qwertyu0153 | 0.5 qwertyu0154 | 0.5 qwertyu0155 | 0.5 qwertyu0156 | 0.5 qwertyu0157 | 0.5 qwertyu0158 | 0.5 qwertyu0159 | 0.5 qwertyu0160 | 0.5 qwertyu0161 | 0.5 qwertyu0162 | 0.5 qwertyu0163 | 0.5 qwertyu0164 | 0.5 qwertyu0165 | 0.5 qwertyu0166 | 0.5 qwertyu0167 | 0.5 qwertyu0168 | 0.5 qwertyu0169 | 0.5 qwertyu0170 | 0.5 qwertyu0171 | 0.5 qwertyu0172 | 0.5 qwertyu0173 | 0.5 qwertyu0174 | 0.5 qwertyu0175 | 0.5 qwertyu0176 | 0.5 qwertyu0177 | 0.5 qwertyu0178 | 0.5 qwertyu0179 | 0.5 qwertyu0180 | 0.5 qwertyu0181 | 0.5 qwertyu0182 | 0.5 qwertyu0183 | 0.5 qwertyu0184 | 0.5 qwertyu0185 | 0.5 qwertyu0186 | 0.5 qwertyu0187 | 0.5 qwertyu0189 | 0.5 qwertyu0190 | 0.5 qwertyu0191 | 0.5 qwertyu0192 | 0.5 qwertyu0193 | 0.5 qwertyu0194 | 0.5 qwertyu0195 | 0.5 qwertyu0196 | 0.5 qwertyu0197 | 0.5 qwertyu0198 | 0.5 qwertyu0199 | 0.5 qwertyu0200 | 0.5 qwertyu0201 | 0.5 qwertyu0202 | 0.5 qwertyu0203 | 0.5 qwertyu0204 | 0.5 qwertyu0205 | 0.5 qwertyu0206 | 0.5 qwertyu0207 | 0.5 qwertyu0208 | 0.5 qwertyu0209 | 0.5 qwertyu0210 | 0.5 qwertyu0211 | 0.5 qwertyu0212 | 0.5 qwertyu0213 | 0.5 qwertyu0214 | 0.5 qwertyu0215 | 0.5 qwertyu0216 | 0.5 qwertyu0217 | 0.5 qwertyu0218 | 0.5 qwertyu0219 | 0.5 qwertyu0220 | 0.5 qwertyu0221 | 0.5 qwertyu0222 | 0.5 qwertyu0223 | 0.5 qwertyu0224 | 0.5 qwertyu0225 | 0.5 qwertyu0226 | 0.5 qwertyu0227 | 0.5 qwertyu0228 | 0.5 qwertyu0229 | 0.5 qwertyu0230 | 0.5 qwertyu0231 | 0.5 qwertyu0232 | 0.5 qwertyu0233 | 0.5 qwertyu0234 | 0.5 qwertyu0235 | 0.5 qwertyu0236 | 0.5 qwertyu0237 | 0.5 qwertyu0238 | 0.5 qwertyu0239 | 0.5 qwertyu0240 | 0.5 qwertyu0241 | 0.5 qwertyu0242 | 0.5 qwertyu0243 | 0.5 qwertyu0244 | 0.5 qwertyu0245 | 0.5 qwertyu0246 | 0.5 qwertyu0247 | 0.5 qwertyu0248 | 0.5 qwertyu0249 | 0.5 qwertyu0250 | 0.5 qwertyu0251 | 0.5 qwertyu0252 | 0.5 qwertyu0253 | 0.5 qwertyu0254 | 0.5 qwertyu0255 | 0.5 qwertyu0256 | 0.5 qwertyu0257 | 0.5 qwertyu0258 | 0.5 qwertyu0259 | 0.5 qwertyu0260 | 0.5 qwertyu0261 | 0.5 qwertyu0262 | 0.5 qwertyu0263 | 0.5 qwertyu0264 | 0.5 qwertyu0265 | 0.5 qwertyu0266 | 0.5 qwertyu0267 | 0.5 qwertyu0268 | 0.5 qwertyu0269 | 0.5 qwertyu0270 | 0.5 qwertyu0271 | 0.5 qwertyu0272 | 0.5 qwertyu0273 | 0.5 qwertyu0274 | 0.5 qwertyu0275 | 0.5 qwertyu0276 | 0.5 qwertyu0277 | 0.5 qwertyu0278 | 0.5 qwertyu0279 | 0.5 qwertyu0280 | 0.5 qwertyu0281 | 0.5 qwertyu0282 | 0.5 qwertyu0283 | 0.5 qwertyu0284 | 0.5 qwertyu0285 | 0.5 qwertyu0286 | 0.5 qwertyu0287 | 0.5 qwertyu0289 | 0.5 qwertyu0290 | 0.5 qwertyu0291 | 0.5 qwertyu0292 | 0.5 qwertyu0293 | 0.5 qwertyu0294 | 0.5 qwertyu0295 | 0.5 qwertyu0296 | 0.5 qwertyu0297 | 0.5 qwertyu0298 | 0.5 qwertyu0299 | 0.5 qwertyu0300 | 0.5 qwertyu0301 | 0.5 qwertyu0302 | 0.5 qwertyu0303 | 0.5 qwertyu0304 | 0.5 qwertyu0305 | 0.5 qwertyu0306 | 0.5 qwertyu0307 | 0.5 qwertyu0308 | 0.5 qwertyu0309 | 0.5 qwertyu0310 | 0.5 qwertyu0311 | 0.5 qwertyu0312 | 0.5 qwertyu0313 | 0.5 qwertyu0314 | 0.5 qwertyu0315 | 0.5 qwertyu0316 | 0.5 qwertyu0317 | 0.5 qwertyu0318 | 0.5 qwertyu0319 | 0.5 qwertyu0320 | 0.5 qwertyu0321 | 0.5 qwertyu0322 | 0.5 qwertyu0323 | 0.5 qwertyu0324 | 0.5 qwertyu0325 | 0.5 qwertyu0326 | 0.5 qwertyu0327 | 0.5 qwertyu0328 | 0.5 qwertyu0329 | 0.5 qwertyu0330 | 0.5 qwertyu0331 | 0.5 qwertyu0332 | 0.5 qwertyu0333 | 0.5 qwertyu0334 | 0.5 qwertyu0335 | 0.5 qwertyu0336 | 0.5 qwertyu0337 | 0.5 qwertyu0338 | 0.5 qwertyu0339 | 0.5 qwertyu0340 | 0.5 qwertyu0341 | 0.5 qwertyu0342 | 0.5 qwertyu0343 | 0.5 qwertyu0344 | 0.5 qwertyu0345 | 0.5 qwertyu0346 | 0.5 qwertyu0347 | 0.5 qwertyu0348 | 0.5 qwertyu0349 | 0.5 qwertyu0350 | 0.5 qwertyu0351 | 0.5 qwertyu0352 | 0.5 qwertyu0353 | 0.5 qwertyu0354 | 0.5 qwertyu0355 | 0.5 qwertyu0356 | 0.5 qwertyu0357 | 0.5 qwertyu0358 | 0.5 qwertyu0359 | 0.5 qwertyu0360 | 0.5 qwertyu0361 | 0.5 qwertyu0362 | 0.5 qwertyu0363 | 0.5 qwertyu0364 | 0.5 qwertyu0365 | 0.5 qwertyu0366 | 0.5 qwertyu0367 | 0.5 qwertyu0368 | 0.5 qwertyu0369 | 0.5 qwertyu0370 | 0.5 qwertyu0371 | 0.5 qwertyu0372 | 0.5 qwertyu0373 | 0.5 qwertyu0374 | 0.5 qwertyu0375 | 0.5 qwertyu0376 | 0.5 qwertyu0377 | 0.5 qwertyu0378 | 0.5 qwertyu0379 | 0.5 qwertyu0380 | 0.5 qwertyu0381 | 0.5 qwertyu0382 | 0.5 qwertyu0383 | 0.5 qwertyu0384 | 0.5 qwertyu0385 | 0.5 qwertyu0386 | 0.5 qwertyu0387 | 0.5 qwertyu0389 | 0.5 qwertyu0390 | 0.5 qwertyu0391 | 0.5 qwertyu0392 | 0.5 qwertyu0393 | 0.5 qwertyu0394 | 0.5 qwertyu0395 | 0.5 qwertyu0396 | 0.5 qwertyu0397 | 0.5 qwertyu0398 | 0.5 qwertyu0399 | 0.5 qwertyu0400 | 0.5 qwertyu0401 | 0.5 qwertyu0402 | 0.5 qwertyu0403 | 0.5 qwertyu0404 | 0.5 qwertyu0405 | 0.5 qwertyu0406 | 0.5 qwertyu0407 | 0.5 qwertyu0408 | 0.5 qwertyu0409 | 0.5 qwertyu0410 | 0.5 qwertyu0411 | 0.5 qwertyu0412 | 0.5 qwertyu0413 | 0.5 qwertyu0414 | 0.5 qwertyu0415 | 0.5 qwertyu0416 | 0.5 qwertyu0417 | 0.5 qwertyu0418 | 0.5 qwertyu0419 | 0.5 qwertyu0420 | 0.5 qwertyu0421 | 0.5 qwertyu0422 | 0.5 qwertyu0423 | 0.5 qwertyu0424 | 0.5 qwertyu0425 | 0.5 qwertyu0426 | 0.5 qwertyu0427 | 0.5 qwertyu0428 | 0.5 qwertyu0429 | 0.5 qwertyu0430 | 0.5 qwertyu0431 | 0.5 qwertyu0432 | 0.5 qwertyu0433 | 0.5 qwertyu0434 | 0.5 qwertyu0435 | 0.5 qwertyu0436 | 0.5 qwertyu0437 | 0.5 qwertyu0438 | 0.5 qwertyu0439 | 0.5 qwertyu0440 | 0.5 qwertyu0441 | 0.5 qwertyu0442 | 0.5 qwertyu0443 | 0.5 qwertyu0444 | 0.5 qwertyu0445 | 0.5 qwertyu0446 | 0.5 qwertyu0447 | 0.5 qwertyu0448 | 0.5 qwertyu0449 | 0.5 qwertyu0450 | 0.5 qwertyu0451 | 0.5 qwertyu0452 | 0.5 qwertyu0453 | 0.5 qwertyu0454 | 0.5 qwertyu0455 | 0.5 qwertyu0456 | 0.5 qwertyu0457 | 0.5 qwertyu0458 | 0.5 qwertyu0459 | 0.5 qwertyu0460 | 0.5 qwertyu0461 | 0.5 qwertyu0462 | 0.5 qwertyu0463 | 0.5 qwertyu0464 | 0.5 qwertyu0465 | 0.5 qwertyu0466 | 0.5 qwertyu0467 | 0.5 qwertyu0468 | 0.5 qwertyu0469 | 0.5 qwertyu0470 | 0.5 qwertyu0471 | 0.5 qwertyu0472 | 0.5 qwertyu0473 | 0.5 qwertyu0474 | 0.5 qwertyu0475 | 0.5 qwertyu0476 | 0.5 qwertyu0477 | 0.5 qwertyu0478 | 0.5 qwertyu0479 | 0.5 qwertyu0480 | 0.5 qwertyu0481 | 0.5 qwertyu0482 | 0.5 qwertyu0483 | 0.5 qwertyu0484 | 0.5 qwertyu0485 | 0.5 qwertyu0486 | 0.5 qwertyu0487 | 0.5 qwertyu0489 | 0.5 qwertyu0490 | 0.5 qwertyu0491 | 0.5 qwertyu0492 | 0.5 qwertyu0493 | 0.5 qwertyu0494 | 0.5 qwertyu0495 | 0.5 qwertyu0496 | 0.5 qwertyu0497 | 0.5 qwertyu0498 | 0.5 qwertyu0499 | 0.5 qwertyu0500 | 0.5 qwertyu0501 | 0.5 qwertyu0502 | 0.5 qwertyu0503 | 0.5 qwertyu0504 | 0.5 qwertyu0505 | 0.5 qwertyu0506 | 0.5 qwertyu0507 | 0.5 qwertyu0508 | 0.5 qwertyu0509 | 0.5 qwertyu0510 | 0.5 qwertyu0511 | 0.5 qwertyu0512 | 0.5 qwertyu0513 | 0.5 qwertyu0514 | 0.5 qwertyu0515 | 0.5 qwertyu0516 | 0.5 qwertyu0517 | 0.5 qwertyu0518 | 0.5 qwertyu0519 | 0.5 qwertyu0520 | 0.5 qwertyu0521 | 0.5 qwertyu0522 | 0.5 qwertyu0523 | 0.5 qwertyu0524 | 0.5 qwertyu0525 | 0.5 qwertyu0526 | 0.5 qwertyu0527 | 0.5 qwertyu0528 | 0.5 qwertyu0529 | 0.5 qwertyu0530 | 0.5 qwertyu0531 | 0.5 qwertyu0532 | 0.5 qwertyu0533 | 0.5 qwertyu0534 | 0.5 qwertyu0535 | 0.5 qwertyu0536 | 0.5 qwertyu0537 | 0.5 qwertyu0538 | 0.5 qwertyu0539 | 0.5 qwertyu0540 | 0.5 qwertyu0541 | 0.5 qwertyu0542 | 0.5 qwertyu0543 | 0.5 qwertyu0544 | 0.5 qwertyu0545 | 0.5 qwertyu0546 | 0.5 qwertyu0547 | 0.5 qwertyu0548 | 0.5 qwertyu0549 | 0.5 qwertyu0550 | 0.5 qwertyu0551 | 0.5 qwertyu0552 | 0.5 qwertyu0553 | 0.5 qwertyu0554 | 0.5 qwertyu0555 | 0.5 qwertyu0556 | 0.5 qwertyu0557 | 0.5 qwertyu0558 | 0.5 qwertyu0559 | 0.5 qwertyu0560 | 0.5 qwertyu0561 | 0.5 qwertyu0562 | 0.5 qwertyu0563 | 0.5 qwertyu0564 | 0.5 qwertyu0565 | 0.5 qwertyu0566 | 0.5 qwertyu0567 | 0.5 qwertyu0568 | 0.5 qwertyu0569 | 0.5 qwertyu0570 | 0.5 qwertyu0571 | 0.5 qwertyu0572 | 0.5 qwertyu0573 | 0.5 qwertyu0574 | 0.5 qwertyu0575 | 0.5 qwertyu0576 | 0.5 qwertyu0577 | 0.5 qwertyu0578 | 0.5 qwertyu0579 | 0.5 qwertyu0580 | 0.5 qwertyu0581 | 0.5 qwertyu0582 | 0.5 qwertyu0583 | 0.5 qwertyu0584 | 0.5 qwertyu0585 | 0.5 qwertyu0586 | 0.5 qwertyu0587 | 0.5 qwertyu0589 | 0.5 qwertyu0590 | 0.5 qwertyu0591 | 0.5 qwertyu0592 | 0.5 qwertyu0593 | 0.5 qwertyu0594 | 0.5 qwertyu0595 | 0.5 qwertyu0596 | 0.5 qwertyu0597 | 0.5 qwertyu0598 | 0.5 qwertyu0599 | 0.5 qwertyu0600 | 0.5 qwertyu0601 | 0.5 qwertyu0602 | 0.5 qwertyu0603 | 0.5 qwertyu0604 | 0.5 qwertyu0605 | 0.5 qwertyu0606 | 0.5 qwertyu0607 | 0.5 qwertyu0608 | 0.5 qwertyu0609 | 0.5 qwertyu0610 | 0.5 qwertyu0611 | 0.5 qwertyu0612 | 0.5 qwertyu0613 | 0.5 qwertyu0614 | 0.5 qwertyu0615 | 0.5 qwertyu0616 | 0.5 qwertyu0617 | 0.5 qwertyu0618 | 0.5 qwertyu0619 | 0.5 qwertyu0620 | 0.5 qwertyu0621 | 0.5 qwertyu0622 | 0.5 qwertyu0623 | 0.5 qwertyu0624 | 0.5 qwertyu0625 | 0.5 qwertyu0626 | 0.5 qwertyu0627 | 0.5 qwertyu0628 | 0.5 qwertyu0629 | 0.5 qwertyu0630 | 0.5 qwertyu0631 | 0.5 qwertyu0632 | 0.5 qwertyu0633 | 0.5 qwertyu0634 | 0.5 qwertyu0635 | 0.5 qwertyu0636 | 0.5 qwertyu0637 | 0.5 qwertyu0638 | 0.5 qwertyu0639 | 0.5 qwertyu0640 | 0.5 qwertyu0641 | 0.5 qwertyu0642 | 0.5 qwertyu0643 | 0.5 qwertyu0644 | 0.5 qwertyu0645 | 0.5 qwertyu0646 | 0.5 qwertyu0647 | 0.5 qwertyu0648 | 0.5 qwertyu0649 | 0.5 qwertyu0650 | 0.5 qwertyu0651 | 0.5 qwertyu0652 | 0.5 qwertyu0653 | 0.5 qwertyu0654 | 0.5 qwertyu0655 | 0.5 qwertyu0656 | 0.5 qwertyu0657 | 0.5 qwertyu0658 | 0.5 qwertyu0659 | 0.5 qwertyu0660 | 0.5 qwertyu0661 | 0.5 qwertyu0662 | 0.5 qwertyu0663 | 0.5 qwertyu0664 | 0.5 qwertyu0665 | 0.5 qwertyu0666 | 0.5 qwertyu0667 | 0.5 qwertyu0668 | 0.5 qwertyu0669 | 0.5 qwertyu0670 | 0.5 qwertyu0671 | 0.5 qwertyu0672 | 0.5 qwertyu0673 | 0.5 qwertyu0674 | 0.5 qwertyu0675 | 0.5 qwertyu0676 | 0.5 qwertyu0677 | 0.5 qwertyu0678 | 0.5 qwertyu0679 | 0.5 qwertyu0680 | 0.5 qwertyu0681 | 0.5 qwertyu0682 | 0.5 qwertyu0683 | 0.5 qwertyu0684 | 0.5 qwertyu0685 | 0.5 qwertyu0686 | 0.5 qwertyu0687 | 0.5 qwertyu0689 | 0.5 qwertyu0690 | 0.5 qwertyu0691 | 0.5 qwertyu0692 | 0.5 qwertyu0693 | 0.5 qwertyu0694 | 0.5 qwertyu0695 | 0.5 qwertyu0696 | 0.5 qwertyu0697 | 0.5 qwertyu0698 | 0.5 qwertyu0699 | 0.5 qwertyu0700 | 0.5 qwertyu0701 | 0.5 qwertyu0702 | 0.5 qwertyu0703 | 0.5 qwertyu0704 | 0.5 qwertyu0705 | 0.5 qwertyu0706 | 0.5 qwertyu0707 | 0.5 qwertyu0708 | 0.5 qwertyu0709 | 0.5 qwertyu0710 | 0.5 qwertyu0711 | 0.5 qwertyu0712 | 0.5 qwertyu0713 | 0.5 qwertyu0714 | 0.5 qwertyu0715 | 0.5 qwertyu0716 | 0.5 qwertyu0717 | 0.5 qwertyu0718 | 0.5 qwertyu0719 | 0.5 qwertyu0720 | 0.5 qwertyu0721 | 0.5 qwertyu0722 | 0.5 qwertyu0723 | 0.5 qwertyu0724 | 0.5 qwertyu0725 | 0.5 qwertyu0726 | 0.5 qwertyu0727 | 0.5 qwertyu0728 | 0.5 qwertyu0729 | 0.5 qwertyu0730 | 0.5 qwertyu0731 | 0.5 qwertyu0732 | 0.5 qwertyu0733 | 0.5 qwertyu0734 | 0.5 qwertyu0735 | 0.5 qwertyu0736 | 0.5 qwertyu0737 | 0.5 qwertyu0738 | 0.5 qwertyu0739 | 0.5 qwertyu0740 | 0.5 qwertyu0741 | 0.5 qwertyu0742 | 0.5 qwertyu0743 | 0.5 qwertyu0744 | 0.5 qwertyu0745 | 0.5 qwertyu0746 | 0.5 qwertyu0747 | 0.5 qwertyu0748 | 0.5 qwertyu0749 | 0.5 qwertyu0750 | 0.5 qwertyu0751 | 0.5 qwertyu0752 | 0.5 qwertyu0753 | 0.5 qwertyu0754 | 0.5 qwertyu0755 | 0.5 qwertyu0756 | 0.5 qwertyu0757 | 0.5 qwertyu0758 | 0.5 qwertyu0759 | 0.5 qwertyu0760 | 0.5 qwertyu0761 | 0.5 qwertyu0762 | 0.5 qwertyu0763 | 0.5 qwertyu0764 | 0.5 qwertyu0765 | 0.5 qwertyu0766 | 0.5 qwertyu0767 | 0.5 qwertyu0768 | 0.5 qwertyu0769 | 0.5 qwertyu0770 | 0.5 qwertyu0771 | 0.5 qwertyu0772 | 0.5 qwertyu0773 | 0.5 qwertyu0774 | 0.5 qwertyu0775 | 0.5 qwertyu0776 | 0.5 qwertyu0777 | 0.5 qwertyu0778 | 0.5 qwertyu0779 | 0.5 qwertyu0780 | 0.5 qwertyu0781 | 0.5 qwertyu0782 | 0.5 qwertyu0783 | 0.5 qwertyu0784 | 0.5 qwertyu0785 | 0.5 qwertyu0786 | 0.5 qwertyu0787 | 0.5 qwertyu0789 | 0.5 qwertyu0790 | 0.5 qwertyu0791 | 0.5 qwertyu0792 | 0.5 qwertyu0793 | 0.5 qwertyu0794 | 0.5 qwertyu0795 | 0.5 qwertyu0796 | 0.5 qwertyu0797 | 0.5 qwertyu0798 | 0.5 qwertyu0799 | 0.5 qwertyu0800 | 0.5 qwertyu0801 | 0.5 qwertyu0802 | 0.5 qwertyu0803 | 0.5 qwertyu0804 | 0.5 qwertyu0805 | 0.5 qwertyu0806 | 0.5 qwertyu0807 | 0.5 qwertyu0808 | 0.5 qwertyu0809 | 0.5 qwertyu0810 | 0.5 qwertyu0811 | 0.5 qwertyu0812 | 0.5 qwertyu0813 | 0.5 qwertyu0814 | 0.5 qwertyu0815 | 0.5 qwertyu0816 | 0.5 qwertyu0817 | 0.5 qwertyu0818 | 0.5 qwertyu0819 | 0.5 qwertyu0820 | 0.5 qwertyu0821 | 0.5 qwertyu0822 | 0.5 qwertyu0823 | 0.5 qwertyu0824 | 0.5 qwertyu0825 | 0.5 qwertyu0826 | 0.5 qwertyu0827 | 0.5 qwertyu0828 | 0.5 qwertyu0829 | 0.5 qwertyu0830 | 0.5 qwertyu0831 | 0.5 qwertyu0832 | 0.5 qwertyu0833 | 0.5 qwertyu0834 | 0.5 qwertyu0835 | 0.5 qwertyu0836 | 0.5 qwertyu0837 | 0.5 qwertyu0838 | 0.5 qwertyu0839 | 0.5 qwertyu0840 | 0.5 qwertyu0841 | 0.5 qwertyu0842 | 0.5 qwertyu0843 | 0.5 qwertyu0844 | 0.5 qwertyu0845 | 0.5 qwertyu0846 | 0.5 qwertyu0847 | 0.5 qwertyu0848 | 0.5 qwertyu0849 | 0.5 qwertyu0850 | 0.5 qwertyu0851 | 0.5 qwertyu0852 | 0.5 qwertyu0853 | 0.5 qwertyu0854 | 0.5 qwertyu0855 | 0.5 qwertyu0856 | 0.5 qwertyu0857 | 0.5 qwertyu0858 | 0.5 qwertyu0859 | 0.5 qwertyu0860 | 0.5 qwertyu0861 | 0.5 qwertyu0862 | 0.5 qwertyu0863 | 0.5 qwertyu0864 | 0.5 qwertyu0865 | 0.5 qwertyu0866 | 0.5 qwertyu0867 | 0.5 qwertyu0868 | 0.5 qwertyu0869 | 0.5 qwertyu0870 | 0.5 qwertyu0871 | 0.5 qwertyu0872 | 0.5 qwertyu0873 | 0.5 qwertyu0874 | 0.5 qwertyu0875 | 0.5 qwertyu0876 | 0.5 qwertyu0877 | 0.5 qwertyu0878 | 0.5 qwertyu0879 | 0.5 qwertyu0880 | 0.5 qwertyu0881 | 0.5 qwertyu0882 | 0.5 qwertyu0883 | 0.5 qwertyu0884 | 0.5 qwertyu0885 | 0.5 qwertyu0886 | 0.5 qwertyu0887 | 0.5 qwertyu0889 | 0.5 qwertyu0890 | 0.5 qwertyu0891 | 0.5 qwertyu0892 | 0.5 qwertyu0893 | 0.5 qwertyu0894 | 0.5 qwertyu0895 | 0.5 qwertyu0896 | 0.5 qwertyu0897 | 0.5 qwertyu0898 | 0.5 qwertyu0899 | 0.5 qwertyu1000 | 0.411765 (1000 rows) select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.6 qwertyu0980 | 0.411765 qwertyu0981 | 0.411765 qwertyu0982 | 0.411765 qwertyu0983 | 0.411765 qwertyu0984 | 0.411765 qwertyu0985 | 0.411765 qwertyu0986 | 0.411765 qwertyu0987 | 0.411765 qwertyu0989 | 0.411765 qwertyu0088 | 0.333333 qwertyu0098 | 0.333333 qwertyu0188 | 0.333333 qwertyu0288 | 0.333333 qwertyu0388 | 0.333333 qwertyu0488 | 0.333333 qwertyu0588 | 0.333333 qwertyu0688 | 0.333333 qwertyu0788 | 0.333333 qwertyu0888 | 0.333333 qwertyu0900 | 0.333333 qwertyu0901 | 0.333333 qwertyu0902 | 0.333333 qwertyu0903 | 0.333333 qwertyu0904 | 0.333333 qwertyu0905 | 0.333333 qwertyu0906 | 0.333333 qwertyu0907 | 0.333333 qwertyu0908 | 0.333333 qwertyu0909 | 0.333333 qwertyu0910 | 0.333333 qwertyu0911 | 0.333333 qwertyu0912 | 0.333333 qwertyu0913 | 0.333333 qwertyu0914 | 0.333333 qwertyu0915 | 0.333333 qwertyu0916 | 0.333333 qwertyu0917 | 0.333333 qwertyu0918 | 0.333333 qwertyu0919 | 0.333333 qwertyu0920 | 0.333333 qwertyu0921 | 0.333333 qwertyu0922 | 0.333333 qwertyu0923 | 0.333333 qwertyu0924 | 0.333333 qwertyu0925 | 0.333333 qwertyu0926 | 0.333333 qwertyu0927 | 0.333333 qwertyu0928 | 0.333333 qwertyu0929 | 0.333333 qwertyu0930 | 0.333333 qwertyu0931 | 0.333333 qwertyu0932 | 0.333333 qwertyu0933 | 0.333333 qwertyu0934 | 0.333333 qwertyu0935 | 0.333333 qwertyu0936 | 0.333333 qwertyu0937 | 0.333333 qwertyu0938 | 0.333333 qwertyu0939 | 0.333333 qwertyu0940 | 0.333333 qwertyu0941 | 0.333333 qwertyu0942 | 0.333333 qwertyu0943 | 0.333333 qwertyu0944 | 0.333333 qwertyu0945 | 0.333333 qwertyu0946 | 0.333333 qwertyu0947 | 0.333333 qwertyu0948 | 0.333333 qwertyu0949 | 0.333333 qwertyu0950 | 0.333333 qwertyu0951 | 0.333333 qwertyu0952 | 0.333333 qwertyu0953 | 0.333333 qwertyu0954 | 0.333333 qwertyu0955 | 0.333333 qwertyu0956 | 0.333333 qwertyu0957 | 0.333333 qwertyu0958 | 0.333333 qwertyu0959 | 0.333333 qwertyu0960 | 0.333333 qwertyu0961 | 0.333333 qwertyu0962 | 0.333333 qwertyu0963 | 0.333333 qwertyu0964 | 0.333333 qwertyu0965 | 0.333333 qwertyu0966 | 0.333333 qwertyu0967 | 0.333333 qwertyu0968 | 0.333333 qwertyu0969 | 0.333333 qwertyu0970 | 0.333333 qwertyu0971 | 0.333333 qwertyu0972 | 0.333333 qwertyu0973 | 0.333333 qwertyu0974 | 0.333333 qwertyu0975 | 0.333333 qwertyu0976 | 0.333333 qwertyu0977 | 0.333333 qwertyu0978 | 0.333333 qwertyu0979 | 0.333333 qwertyu0990 | 0.333333 qwertyu0991 | 0.333333 qwertyu0992 | 0.333333 qwertyu0993 | 0.333333 qwertyu0994 | 0.333333 qwertyu0995 | 0.333333 qwertyu0996 | 0.333333 qwertyu0997 | 0.333333 qwertyu0998 | 0.333333 qwertyu0999 | 0.333333 (110 rows) select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t; t | sml -------------+---------- qwertyu0988 | 0.333333 (1 row) create table test2(t text); insert into test2 values ('abcdef'); insert into test2 values ('quark'); create index test2_idx_gin on test2 using gin (t gin_trgm_ops); set enable_seqscan=off; explain (costs off) select * from test2 where t like '%BCD%'; QUERY PLAN ------------------------------------------ Bitmap Heap Scan on test2 Recheck Cond: (t ~~ '%BCD%'::text) -> Bitmap Index Scan on test2_idx_gin Index Cond: (t ~~ '%BCD%'::text) (4 rows) explain (costs off) select * from test2 where t ilike '%BCD%'; QUERY PLAN ------------------------------------------- Bitmap Heap Scan on test2 Recheck Cond: (t ~~* '%BCD%'::text) -> Bitmap Index Scan on test2_idx_gin Index Cond: (t ~~* '%BCD%'::text) (4 rows) select * from test2 where t like '%BCD%'; t --- (0 rows) select * from test2 where t like '%bcd%'; t -------- abcdef (1 row) select * from test2 where t like E'%\\bcd%'; t -------- abcdef (1 row) select * from test2 where t ilike '%BCD%'; t -------- abcdef (1 row) select * from test2 where t ilike 'qua%'; t ------- quark (1 row) drop index test2_idx_gin; create index test2_idx_gist on test2 using gist (t gist_trgm_ops); set enable_seqscan=off; explain (costs off) select * from test2 where t like '%BCD%'; QUERY PLAN ------------------------------------------ Index Scan using test2_idx_gist on test2 Index Cond: (t ~~ '%BCD%'::text) (2 rows) explain (costs off) select * from test2 where t ilike '%BCD%'; QUERY PLAN ------------------------------------------ Index Scan using test2_idx_gist on test2 Index Cond: (t ~~* '%BCD%'::text) (2 rows) select * from test2 where t like '%BCD%'; t --- (0 rows) select * from test2 where t like '%bcd%'; t -------- abcdef (1 row) select * from test2 where t like E'%\\bcd%'; t -------- abcdef (1 row) select * from test2 where t ilike '%BCD%'; t -------- abcdef (1 row) select * from test2 where t ilike 'qua%'; t ------- quark (1 row)