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Trim trailing whitespace --- needed commit to update anoncvs.
This commit is contained in:
Bruce Momjian
parent
0bd4da23a4
commit
e1829591cb
@ -27,8 +27,8 @@
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<literal>int icount(int[])</literal> - the number of elements in intarray
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</para>
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<programlisting>
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test=# select icount('{1,2,3}'::int[]);
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icount
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test=# select icount('{1,2,3}'::int[]);
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icount
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--------
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3
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(1 row)
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@ -41,7 +41,7 @@ test=# select icount('{1,2,3}'::int[]);
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</para>
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<programlisting>
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test=# select sort('{1,2,3}'::int[],'desc');
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sort
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sort
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---------
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{3,2,1}
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(1 row)
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@ -56,7 +56,7 @@ test=# select sort('{1,2,3}'::int[],'desc');
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<listitem>
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<para>
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<literal>int[] sort_asc(int[]),sort_desc(int[])</literal> - shortcuts for sort
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<literal>int[] sort_asc(int[]),sort_desc(int[])</literal> - shortcuts for sort
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</para>
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</listitem>
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@ -66,7 +66,7 @@ test=# select sort('{1,2,3}'::int[],'desc');
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</para>
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<programlisting>
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test=# select uniq(sort('{1,2,3,2,1}'::int[]));
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uniq
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uniq
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---------
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{1,2,3}
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(1 row)
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@ -75,12 +75,12 @@ test=# select uniq(sort('{1,2,3,2,1}'::int[]));
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<listitem>
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<para>
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<literal>int idx(int[], int item)</literal> - returns index of first
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<literal>int idx(int[], int item)</literal> - returns index of first
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intarray matching element to item, or '0' if matching failed.
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</para>
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<programlisting>
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test=# select idx('{1,2,3,2,1}'::int[],2);
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idx
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idx
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-----
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2
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(1 row)
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@ -89,12 +89,12 @@ test=# select idx('{1,2,3,2,1}'::int[],2);
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<listitem>
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<para>
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<literal>int[] subarray(int[],int START [, int LEN])</literal> - returns
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part of intarray starting from element number START (from 1) and length LEN.
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<literal>int[] subarray(int[],int START [, int LEN])</literal> - returns
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part of intarray starting from element number START (from 1) and length LEN.
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</para>
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<programlisting>
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test=# select subarray('{1,2,3,2,1}'::int[],2,3);
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subarray
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subarray
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----------
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{2,3,2}
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(1 row)
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@ -107,7 +107,7 @@ test=# select subarray('{1,2,3,2,1}'::int[],2,3);
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</para>
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<programlisting>
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test=# select intset(1);
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intset
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intset
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--------
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{1}
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(1 row)
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@ -178,8 +178,8 @@ test=# select intset(1);
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<row>
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<entry><literal>int[] @@ query_int</literal></entry>
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<entry>
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returns TRUE if array satisfies query (like
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<literal>'1&(2|3)'</literal>)
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returns TRUE if array satisfies query (like
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<literal>'1&(2|3)'</literal>)
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</entry>
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</row>
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@ -212,7 +212,7 @@ CREATE unique index message_section_map_key2 ON message_section_map (sid, mid );
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CREATE INDEX message_rdtree_idx ON message USING GIST ( sections gist__int_ops);
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-- select some messages with section in 1 OR 2 - OVERLAP operator
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SELECT message.mid FROM message WHERE message.sections && '{1,2}';
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SELECT message.mid FROM message WHERE message.sections && '{1,2}';
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-- select messages contains in sections 1 AND 2 - CONTAINS operator
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SELECT message.mid FROM message WHERE message.sections @> '{1,2}';
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@ -232,29 +232,29 @@ SELECT message.mid FROM message WHERE '{1,2}' <@ message.sections;
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2. psql TEST < ../_int.sql
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3. ./create_test.pl | psql TEST
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4. ./bench.pl - perl script to benchmark queries, supports OR, AND queries
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with/without RD-Tree. Run script without arguments to
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with/without RD-Tree. Run script without arguments to
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see availbale options.
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a)test without RD-Tree (OR)
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./bench.pl -d TEST -c -s 1,2 -v
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b)test with RD-Tree
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b)test with RD-Tree
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./bench.pl -d TEST -c -s 1,2 -v -r
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BENCHMARKS:
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Size of table <message>: 200000
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Size of table <message_section_map>: 269133
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Size of table <message_section_map>: 269133
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Distribution of messages by sections:
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section 0: 74377 messages
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section 1: 16284 messages
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section 50: 1229 messages
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section 99: 683 messages
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old - without RD-Tree support,
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new - with RD-Tree
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+----------+---------------+----------------+
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|Search set|OR, time in sec|AND, time in sec|
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| +-------+-------+--------+-------+
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@ -274,10 +274,10 @@ SELECT message.mid FROM message WHERE '{1,2}' <@ message.sections;
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<sect2>
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<title>Authors</title>
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<para>
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All work was done by Teodor Sigaev (<email>teodor@stack.net</email>) and Oleg
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Bartunov (<email>oleg@sai.msu.su</email>). See
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<ulink url="http://www.sai.msu.su/~megera/postgres/gist"></ulink> for
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additional information. Andrey Oktyabrski did a great work on adding new
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All work was done by Teodor Sigaev (<email>teodor@stack.net</email>) and Oleg
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Bartunov (<email>oleg@sai.msu.su</email>). See
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<ulink url="http://www.sai.msu.su/~megera/postgres/gist"></ulink> for
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additional information. Andrey Oktyabrski did a great work on adding new
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functions and operations.
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</para>
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</sect2>
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