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https://git.postgresql.org/git/postgresql.git
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From: Jan Wieck <jwieck@debis.com>
A few minutes ago I sent down the PL/Tcl directory to this
list. Look at it and reuse anything that might help to build
PL/perl. I really hope that PL/perl and PL/Tcl appear in the
6.3 distribution. I'll do whatever I can to make this happen.
This commit is contained in:
Marc G. Fournier
parent
957a6149e5
commit
2784f7c81a
8
src/pl/tcl/test/README
Normal file
8
src/pl/tcl/test/README
Normal file
@ -0,0 +1,8 @@
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This is a small test suite for PL/Tcl.
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Just run the script runtest and compare the files
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test.expected against test.out after.
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Jan
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27
src/pl/tcl/test/runtest
Executable file
27
src/pl/tcl/test/runtest
Executable file
@ -0,0 +1,27 @@
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#!/bin/sh
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DBNAME=pltcl_test
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export DBNAME
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echo "**** Destroy old database $DBNAME ****"
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destroydb $DBNAME
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echo "**** Create test database $DBNAME ****"
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createdb $DBNAME
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echo "**** Create procedural language pltcl ****"
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psql -q -n $DBNAME <test_mklang.sql
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echo "**** Create tables, functions and triggers ****"
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psql -q -n $DBNAME <test_setup.sql
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echo "**** Running test queries ****"
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psql -q -n -e $DBNAME <test_queries.sql > test.out 2>&1
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if diff test.expected test.out >/dev/null 2>&1 ; then
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echo " Tests passed O.K."
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else
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echo " Tests faild - look at diffs between"
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echo " test.expected and test.out"
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fi
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178
src/pl/tcl/test/test.expected
Normal file
178
src/pl/tcl/test/test.expected
Normal file
@ -0,0 +1,178 @@
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QUERY: insert into T_pkey1 values (1, 'key1-1', 'test key');
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QUERY: insert into T_pkey1 values (1, 'key1-2', 'test key');
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QUERY: insert into T_pkey1 values (1, 'key1-3', 'test key');
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QUERY: insert into T_pkey1 values (2, 'key2-1', 'test key');
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QUERY: insert into T_pkey1 values (2, 'key2-2', 'test key');
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QUERY: insert into T_pkey1 values (2, 'key2-3', 'test key');
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QUERY: insert into T_pkey2 values (1, 'key1-1', 'test key');
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QUERY: insert into T_pkey2 values (1, 'key1-2', 'test key');
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QUERY: insert into T_pkey2 values (1, 'key1-3', 'test key');
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QUERY: insert into T_pkey2 values (2, 'key2-1', 'test key');
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QUERY: insert into T_pkey2 values (2, 'key2-2', 'test key');
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QUERY: insert into T_pkey2 values (2, 'key2-3', 'test key');
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QUERY: select * from T_pkey1;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|key1-1 |test key
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1|key1-2 |test key
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1|key1-3 |test key
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2|key2-1 |test key
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2|key2-2 |test key
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2|key2-3 |test key
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(6 rows)
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QUERY: select * from T_pkey2;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|KEY1-1 |test key
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1|KEY1-2 |test key
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1|KEY1-3 |test key
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2|KEY2-1 |test key
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2|KEY2-2 |test key
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2|KEY2-3 |test key
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(6 rows)
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QUERY: insert into T_pkey1 values (1, 'KEY1-3', 'should work');
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QUERY: insert into T_pkey2 values (1, 'KEY1-3', 'should fail');
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ERROR: duplicate key '1', 'KEY1-3' for T_pkey2
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QUERY: insert into T_dta1 values ('trec 1', 1, 'key1-1');
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QUERY: insert into T_dta1 values ('trec 2', 1, 'key1-2');
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QUERY: insert into T_dta1 values ('trec 3', 1, 'key1-3');
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QUERY: insert into T_dta1 values ('trec 4', 1, 'key1-4');
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ERROR: key for t_dta1 not in t_pkey1
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QUERY: insert into T_dta2 values ('trec 1', 1, 'KEY1-1');
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QUERY: insert into T_dta2 values ('trec 2', 1, 'KEY1-2');
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QUERY: insert into T_dta2 values ('trec 3', 1, 'KEY1-3');
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QUERY: insert into T_dta2 values ('trec 4', 1, 'KEY1-4');
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ERROR: key for t_dta2 not in t_pkey2
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QUERY: select * from T_dta1;
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tkey |ref1|ref2
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----------+----+--------------------
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trec 1 | 1|key1-1
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trec 2 | 1|key1-2
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trec 3 | 1|key1-3
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(3 rows)
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QUERY: select * from T_dta2;
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tkey |ref1|ref2
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----------+----+--------------------
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trec 1 | 1|KEY1-1
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trec 2 | 1|KEY1-2
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trec 3 | 1|KEY1-3
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(3 rows)
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QUERY: update T_pkey1 set key2 = 'key2-9' where key1 = 2 and key2 = 'key2-1';
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QUERY: update T_pkey1 set key2 = 'key1-9' where key1 = 1 and key2 = 'key1-1';
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ERROR: key '1', 'key1-1 ' referenced by T_dta1
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QUERY: delete from T_pkey1 where key1 = 2 and key2 = 'key2-2';
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QUERY: delete from T_pkey1 where key1 = 1 and key2 = 'key1-2';
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ERROR: key '1', 'key1-2 ' referenced by T_dta1
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QUERY: update T_pkey2 set key2 = 'KEY2-9' where key1 = 2 and key2 = 'KEY2-1';
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QUERY: update T_pkey2 set key2 = 'KEY1-9' where key1 = 1 and key2 = 'KEY1-1';
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NOTICE: updated 1 entries in T_dta2 for new key in T_pkey2
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QUERY: delete from T_pkey2 where key1 = 2 and key2 = 'KEY2-2';
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QUERY: delete from T_pkey2 where key1 = 1 and key2 = 'KEY1-2';
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NOTICE: deleted 1 entries from T_dta2
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QUERY: select * from T_pkey1;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|key1-1 |test key
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1|key1-2 |test key
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1|key1-3 |test key
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2|key2-3 |test key
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1|KEY1-3 |should work
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2|key2-9 |test key
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(6 rows)
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QUERY: select * from T_pkey2;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|KEY1-3 |test key
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2|KEY2-3 |test key
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2|KEY2-9 |test key
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1|KEY1-9 |test key
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(4 rows)
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QUERY: select * from T_dta1;
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tkey |ref1|ref2
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----------+----+--------------------
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trec 1 | 1|key1-1
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trec 2 | 1|key1-2
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trec 3 | 1|key1-3
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(3 rows)
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QUERY: select * from T_dta2;
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tkey |ref1|ref2
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----------+----+--------------------
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trec 3 | 1|KEY1-3
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trec 1 | 1|KEY1-9
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(2 rows)
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QUERY: select tcl_avg(key1) from T_pkey1;
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tcl_avg
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-------
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1
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(1 row)
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QUERY: select tcl_sum(key1) from T_pkey1;
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tcl_sum
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-------
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8
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(1 row)
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QUERY: select tcl_avg(key1) from T_pkey2;
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tcl_avg
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-------
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1
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(1 row)
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QUERY: select tcl_sum(key1) from T_pkey2;
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tcl_sum
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-------
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6
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(1 row)
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QUERY: select tcl_avg(key1) from T_pkey1 where key1 = 99;
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tcl_avg
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-------
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(1 row)
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QUERY: select tcl_sum(key1) from T_pkey1 where key1 = 99;
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tcl_sum
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-------
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0
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(1 row)
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QUERY: select 1 @< 2;
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?column?
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--------
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t
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(1 row)
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QUERY: select 100 @< 4;
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?column?
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--------
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f
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(1 row)
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QUERY: select * from T_pkey1 order by key1 using @<;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|key1-1 |test key
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1|key1-2 |test key
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1|key1-3 |test key
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1|KEY1-3 |should work
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2|key2-3 |test key
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2|key2-9 |test key
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(6 rows)
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QUERY: select * from T_pkey2 order by key1 using @<;
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key1|key2 |txt
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----+--------------------+----------------------------------------
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1|KEY1-3 |test key
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1|KEY1-9 |test key
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2|KEY2-3 |test key
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2|KEY2-9 |test key
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(4 rows)
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9
src/pl/tcl/test/test_mklang.sql
Normal file
9
src/pl/tcl/test/test_mklang.sql
Normal file
@ -0,0 +1,9 @@
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create function pltcl_call_handler() returns opaque
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as '/usr/local/pgsql/lib/pltcl.so'
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language 'C';
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create trusted procedural language 'pltcl'
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handler pltcl_call_handler
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lancompiler 'PL/Tcl';
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73
src/pl/tcl/test/test_queries.sql
Normal file
73
src/pl/tcl/test/test_queries.sql
Normal file
@ -0,0 +1,73 @@
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insert into T_pkey1 values (1, 'key1-1', 'test key');
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insert into T_pkey1 values (1, 'key1-2', 'test key');
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insert into T_pkey1 values (1, 'key1-3', 'test key');
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insert into T_pkey1 values (2, 'key2-1', 'test key');
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insert into T_pkey1 values (2, 'key2-2', 'test key');
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insert into T_pkey1 values (2, 'key2-3', 'test key');
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insert into T_pkey2 values (1, 'key1-1', 'test key');
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insert into T_pkey2 values (1, 'key1-2', 'test key');
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insert into T_pkey2 values (1, 'key1-3', 'test key');
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insert into T_pkey2 values (2, 'key2-1', 'test key');
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insert into T_pkey2 values (2, 'key2-2', 'test key');
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insert into T_pkey2 values (2, 'key2-3', 'test key');
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select * from T_pkey1;
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-- key2 in T_pkey2 should have upper case only
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select * from T_pkey2;
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insert into T_pkey1 values (1, 'KEY1-3', 'should work');
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-- Due to the upper case translation in trigger this must fail
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insert into T_pkey2 values (1, 'KEY1-3', 'should fail');
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insert into T_dta1 values ('trec 1', 1, 'key1-1');
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insert into T_dta1 values ('trec 2', 1, 'key1-2');
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insert into T_dta1 values ('trec 3', 1, 'key1-3');
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-- Must fail due to unknown key in T_pkey1
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insert into T_dta1 values ('trec 4', 1, 'key1-4');
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insert into T_dta2 values ('trec 1', 1, 'KEY1-1');
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insert into T_dta2 values ('trec 2', 1, 'KEY1-2');
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insert into T_dta2 values ('trec 3', 1, 'KEY1-3');
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-- Must fail due to unknown key in T_pkey2
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insert into T_dta2 values ('trec 4', 1, 'KEY1-4');
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select * from T_dta1;
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select * from T_dta2;
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update T_pkey1 set key2 = 'key2-9' where key1 = 2 and key2 = 'key2-1';
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update T_pkey1 set key2 = 'key1-9' where key1 = 1 and key2 = 'key1-1';
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delete from T_pkey1 where key1 = 2 and key2 = 'key2-2';
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delete from T_pkey1 where key1 = 1 and key2 = 'key1-2';
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update T_pkey2 set key2 = 'KEY2-9' where key1 = 2 and key2 = 'KEY2-1';
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update T_pkey2 set key2 = 'KEY1-9' where key1 = 1 and key2 = 'KEY1-1';
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delete from T_pkey2 where key1 = 2 and key2 = 'KEY2-2';
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delete from T_pkey2 where key1 = 1 and key2 = 'KEY1-2';
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|
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select * from T_pkey1;
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select * from T_pkey2;
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select * from T_dta1;
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select * from T_dta2;
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select tcl_avg(key1) from T_pkey1;
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select tcl_sum(key1) from T_pkey1;
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select tcl_avg(key1) from T_pkey2;
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select tcl_sum(key1) from T_pkey2;
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-- The following should return NULL instead of 0
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select tcl_avg(key1) from T_pkey1 where key1 = 99;
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select tcl_sum(key1) from T_pkey1 where key1 = 99;
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select 1 @< 2;
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select 100 @< 4;
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select * from T_pkey1 order by key1 using @<;
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select * from T_pkey2 order by key1 using @<;
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|
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426
src/pl/tcl/test/test_setup.sql
Normal file
426
src/pl/tcl/test/test_setup.sql
Normal file
@ -0,0 +1,426 @@
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--
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-- Create the tables used in the test queries
|
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--
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-- T_pkey1 is the primary key table for T_dta1. Entries from T_pkey1
|
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-- Cannot be changed or deleted if they are referenced from T_dta1.
|
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--
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-- T_pkey2 is the primary key table for T_dta2. If the key values in
|
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-- T_pkey2 are changed, the references in T_dta2 follow. If entries
|
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-- are deleted, the referencing entries from T_dta2 are deleted too.
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-- The values for field key2 in T_pkey2 are silently converted to
|
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-- upper case on insert/update.
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--
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create table T_pkey1 (
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key1 int4,
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key2 char(20),
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txt char(40)
|
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);
|
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|
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create table T_pkey2 (
|
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key1 int4,
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key2 char(20),
|
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txt char(40)
|
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);
|
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|
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create table T_dta1 (
|
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tkey char(10),
|
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ref1 int4,
|
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ref2 char(20)
|
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);
|
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|
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create table T_dta2 (
|
||||
tkey char(10),
|
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ref1 int4,
|
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ref2 char(20)
|
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);
|
||||
|
||||
|
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--
|
||||
-- Function to check key existance in T_pkey1
|
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--
|
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create function check_pkey1_exists(int4, bpchar) returns bool as '
|
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if {![info exists GD]} {
|
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set GD(plan) [spi_prepare \\
|
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"select 1 from T_pkey1 \\
|
||||
where key1 = \\$1 and key2 = \\$2" \\
|
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{int4 bpchar}]
|
||||
}
|
||||
|
||||
set n [spi_execp -count 1 $GD(plan) [list $1 $2]]
|
||||
|
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if {$n > 0} {
|
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return "t"
|
||||
}
|
||||
return "f"
|
||||
' language 'pltcl';
|
||||
|
||||
|
||||
--
|
||||
-- Trigger function on every change to T_pkey1
|
||||
--
|
||||
create function trig_pkey1_before() returns opaque as '
|
||||
#
|
||||
# Create prepared plans on the first call
|
||||
#
|
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if {![info exists GD]} {
|
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#
|
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# Plan to check for duplicate key in T_pkey1
|
||||
#
|
||||
set GD(plan_pkey1) [spi_prepare \\
|
||||
"select check_pkey1_exists(\\$1, \\$2) as ret" \\
|
||||
{int4 bpchar}]
|
||||
#
|
||||
# Plan to check for references from T_dta1
|
||||
#
|
||||
set GD(plan_dta1) [spi_prepare \\
|
||||
"select 1 from T_dta1 \\
|
||||
where ref1 = \\$1 and ref2 = \\$2" \\
|
||||
{int4 bpchar}]
|
||||
}
|
||||
|
||||
#
|
||||
# Initialize flags
|
||||
#
|
||||
set check_old_ref 0
|
||||
set check_new_dup 0
|
||||
|
||||
switch $TG_op {
|
||||
INSERT {
|
||||
#
|
||||
# Must check for duplicate key on INSERT
|
||||
#
|
||||
set check_new_dup 1
|
||||
}
|
||||
UPDATE {
|
||||
#
|
||||
# Must check for duplicate key on UPDATE only if
|
||||
# the key changes. In that case we must check for
|
||||
# references to OLD values too.
|
||||
#
|
||||
if {[string compare $NEW(key1) $OLD(key1)] != 0} {
|
||||
set check_old_ref 1
|
||||
set check_new_dup 1
|
||||
}
|
||||
if {[string compare $NEW(key2) $OLD(key2)] != 0} {
|
||||
set check_old_ref 1
|
||||
set check_new_dup 1
|
||||
}
|
||||
}
|
||||
DELETE {
|
||||
#
|
||||
# Must only check for references to OLD on DELETE
|
||||
#
|
||||
set check_old_ref 1
|
||||
}
|
||||
}
|
||||
|
||||
if {$check_new_dup} {
|
||||
#
|
||||
# Check for duplicate key
|
||||
#
|
||||
spi_execp -count 1 $GD(plan_pkey1) [list $NEW(key1) $NEW(key2)]
|
||||
if {$ret == "t"} {
|
||||
elog WARN \\
|
||||
"duplicate key ''$NEW(key1)'', ''$NEW(key2)'' for T_pkey1"
|
||||
}
|
||||
}
|
||||
|
||||
if {$check_old_ref} {
|
||||
#
|
||||
# Check for references to OLD
|
||||
#
|
||||
set n [spi_execp -count 1 $GD(plan_dta1) [list $OLD(key1) $OLD(key2)]]
|
||||
if {$n > 0} {
|
||||
elog WARN \\
|
||||
"key ''$OLD(key1)'', ''$OLD(key2)'' referenced by T_dta1"
|
||||
}
|
||||
}
|
||||
|
||||
#
|
||||
# Anything is fine - let operation pass through
|
||||
#
|
||||
return OK
|
||||
' language 'pltcl';
|
||||
|
||||
|
||||
create trigger pkey1_before before insert or update or delete on T_pkey1
|
||||
for each row execute procedure
|
||||
trig_pkey1_before();
|
||||
|
||||
|
||||
--
|
||||
-- Trigger function to check for duplicate keys in T_pkey2
|
||||
-- and to force key2 to be upper case only without leading whitespaces
|
||||
--
|
||||
create function trig_pkey2_before() returns opaque as '
|
||||
#
|
||||
# Prepare plan on first call
|
||||
#
|
||||
if {![info exists GD]} {
|
||||
set GD(plan_pkey2) [spi_prepare \\
|
||||
"select 1 from T_pkey2 \\
|
||||
where key1 = \\$1 and key2 = \\$2" \\
|
||||
{int4 bpchar}]
|
||||
}
|
||||
|
||||
#
|
||||
# Convert key2 value
|
||||
#
|
||||
set NEW(key2) [string toupper [string trim $NEW(key2)]]
|
||||
|
||||
#
|
||||
# Check for duplicate key
|
||||
#
|
||||
set n [spi_execp -count 1 $GD(plan_pkey2) [list $NEW(key1) $NEW(key2)]]
|
||||
if {$n > 0} {
|
||||
elog WARN \\
|
||||
"duplicate key ''$NEW(key1)'', ''$NEW(key2)'' for T_pkey2"
|
||||
}
|
||||
|
||||
#
|
||||
# Return modified tuple in NEW
|
||||
#
|
||||
return [array get NEW]
|
||||
' language 'pltcl';
|
||||
|
||||
|
||||
create trigger pkey2_before before insert or update on T_pkey2
|
||||
for each row execute procedure
|
||||
trig_pkey2_before();
|
||||
|
||||
|
||||
--
|
||||
-- Trigger function to force references from T_dta2 follow changes
|
||||
-- in T_pkey2 or be deleted too. This must be done AFTER the changes
|
||||
-- in T_pkey2 are done so the trigger for primkey check on T_dta2
|
||||
-- fired on our updates will see the new key values in T_pkey2.
|
||||
--
|
||||
create function trig_pkey2_after() returns opaque as '
|
||||
#
|
||||
# Prepare plans on first call
|
||||
#
|
||||
if {![info exists GD]} {
|
||||
#
|
||||
# Plan to update references from T_dta2
|
||||
#
|
||||
set GD(plan_dta2_upd) [spi_prepare \\
|
||||
"update T_dta2 set ref1 = \\$3, ref2 = \\$4 \\
|
||||
where ref1 = \\$1 and ref2 = \\$2" \\
|
||||
{int4 bpchar int4 bpchar}]
|
||||
#
|
||||
# Plan to delete references from T_dta2
|
||||
#
|
||||
set GD(plan_dta2_del) [spi_prepare \\
|
||||
"delete from T_dta2 \\
|
||||
where ref1 = \\$1 and ref2 = \\$2" \\
|
||||
{int4 bpchar}]
|
||||
}
|
||||
|
||||
#
|
||||
# Initialize flags
|
||||
#
|
||||
set old_ref_follow 0
|
||||
set old_ref_delete 0
|
||||
|
||||
switch $TG_op {
|
||||
UPDATE {
|
||||
#
|
||||
# On update we must let old references follow
|
||||
#
|
||||
set NEW(key2) [string toupper $NEW(key2)]
|
||||
|
||||
if {[string compare $NEW(key1) $OLD(key1)] != 0} {
|
||||
set old_ref_follow 1
|
||||
}
|
||||
if {[string compare $NEW(key2) $OLD(key2)] != 0} {
|
||||
set old_ref_follow 1
|
||||
}
|
||||
}
|
||||
DELETE {
|
||||
#
|
||||
# On delete we must delete references too
|
||||
#
|
||||
set old_ref_delete 1
|
||||
}
|
||||
}
|
||||
|
||||
if {$old_ref_follow} {
|
||||
#
|
||||
# Let old references follow and fire NOTICE message if
|
||||
# there where some
|
||||
#
|
||||
set n [spi_execp $GD(plan_dta2_upd) \\
|
||||
[list $OLD(key1) $OLD(key2) $NEW(key1) $NEW(key2)]]
|
||||
if {$n > 0} {
|
||||
elog NOTICE \\
|
||||
"updated $n entries in T_dta2 for new key in T_pkey2"
|
||||
}
|
||||
}
|
||||
|
||||
if {$old_ref_delete} {
|
||||
#
|
||||
# delete references and fire NOTICE message if
|
||||
# there where some
|
||||
#
|
||||
set n [spi_execp $GD(plan_dta2_del) \\
|
||||
[list $OLD(key1) $OLD(key2)]]
|
||||
if {$n > 0} {
|
||||
elog NOTICE \\
|
||||
"deleted $n entries from T_dta2"
|
||||
}
|
||||
}
|
||||
|
||||
return OK
|
||||
' language 'pltcl';
|
||||
|
||||
|
||||
create trigger pkey2_after after update or delete on T_pkey2
|
||||
for each row execute procedure
|
||||
trig_pkey2_after();
|
||||
|
||||
|
||||
--
|
||||
-- Generic trigger function to check references in T_dta1 and T_dta2
|
||||
--
|
||||
create function check_primkey() returns opaque as '
|
||||
#
|
||||
# For every trigger/relation pair we create
|
||||
# a saved plan and hold them in GD
|
||||
#
|
||||
set plankey [list "plan" $TG_name $TG_relid]
|
||||
set planrel [list "relname" $TG_relid]
|
||||
|
||||
#
|
||||
# Extract the pkey relation name
|
||||
#
|
||||
set keyidx [expr [llength $args] / 2]
|
||||
set keyrel [string tolower [lindex $args $keyidx]]
|
||||
|
||||
if {![info exists GD($plankey)]} {
|
||||
#
|
||||
# We must prepare a new plan. Build up a query string
|
||||
# for the primary key check.
|
||||
#
|
||||
set keylist [lrange $args [expr $keyidx + 1] end]
|
||||
|
||||
set query "select 1 from $keyrel"
|
||||
set qual " where"
|
||||
set typlist ""
|
||||
set idx 1
|
||||
foreach key $keylist {
|
||||
set key [string tolower $key]
|
||||
#
|
||||
# Add the qual part to the query string
|
||||
#
|
||||
append query "$qual $key = \\$$idx"
|
||||
set qual " and"
|
||||
|
||||
#
|
||||
# Lookup the fields type in pg_attribute
|
||||
#
|
||||
set n [spi_exec "select T.typname \\
|
||||
from pg_type T, pg_attribute A, pg_class C \\
|
||||
where C.relname = ''[quote $keyrel]'' \\
|
||||
and C.oid = A.attrelid \\
|
||||
and A.attname = ''[quote $key]'' \\
|
||||
and A.atttypid = T.oid"]
|
||||
if {$n != 1} {
|
||||
elog WARN "table $keyrel doesn''t have a field named $key"
|
||||
}
|
||||
|
||||
#
|
||||
# Append the fields type to the argument type list
|
||||
#
|
||||
lappend typlist $typname
|
||||
incr idx
|
||||
}
|
||||
|
||||
#
|
||||
# Prepare the plan
|
||||
#
|
||||
set GD($plankey) [spi_prepare $query $typlist]
|
||||
|
||||
#
|
||||
# Lookup and remember the table name for later error messages
|
||||
#
|
||||
spi_exec "select relname from pg_class \\
|
||||
where oid = ''$TG_relid''::oid"
|
||||
set GD($planrel) $relname
|
||||
}
|
||||
|
||||
#
|
||||
# Build the argument list from the NEW row
|
||||
#
|
||||
incr keyidx -1
|
||||
set arglist ""
|
||||
foreach arg [lrange $args 0 $keyidx] {
|
||||
lappend arglist $NEW($arg)
|
||||
}
|
||||
|
||||
#
|
||||
# Check for the primary key
|
||||
#
|
||||
set n [spi_execp -count 1 $GD($plankey) $arglist]
|
||||
if {$n <= 0} {
|
||||
elog WARN "key for $GD($planrel) not in $keyrel"
|
||||
}
|
||||
|
||||
#
|
||||
# Anything is fine
|
||||
#
|
||||
return OK
|
||||
' language 'pltcl';
|
||||
|
||||
|
||||
create trigger dta1_before before insert or update on T_dta1
|
||||
for each row execute procedure
|
||||
check_primkey('ref1', 'ref2', 'T_pkey1', 'key1', 'key2');
|
||||
|
||||
|
||||
create trigger dta2_before before insert or update on T_dta2
|
||||
for each row execute procedure
|
||||
check_primkey('ref1', 'ref2', 'T_pkey2', 'key1', 'key2');
|
||||
|
||||
|
||||
create function tcl_int4add(int4,int4) returns int4 as '
|
||||
return [expr $1 + $2]
|
||||
' language 'pltcl';
|
||||
|
||||
create function tcl_int4div(int4,int4) returns int4 as '
|
||||
return [expr $1 / $2]
|
||||
' language 'pltcl';
|
||||
|
||||
create function tcl_int4inc(int4) returns int4 as '
|
||||
return [expr $1 + 1]
|
||||
' language 'pltcl';
|
||||
|
||||
create aggregate tcl_avg (
|
||||
sfunc1 = tcl_int4add,
|
||||
basetype = int4,
|
||||
stype1 = int4,
|
||||
sfunc2 = tcl_int4inc,
|
||||
stype2 = int4,
|
||||
finalfunc = tcl_int4div,
|
||||
initcond2 = '0'
|
||||
);
|
||||
|
||||
create aggregate tcl_sum (
|
||||
sfunc1 = tcl_int4add,
|
||||
basetype = int4,
|
||||
stype1 = int4,
|
||||
initcond1 = '0'
|
||||
);
|
||||
|
||||
create function tcl_int4lt(int4,int4) returns bool as '
|
||||
if {$1 < $2} {
|
||||
return t
|
||||
}
|
||||
return f
|
||||
' language 'pltcl';
|
||||
|
||||
create operator @< (
|
||||
leftarg = int4,
|
||||
rightarg = int4,
|
||||
procedure = tcl_int4lt
|
||||
);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user