mirror of
https://github.com/tursodatabase/libsql.git
synced 2024-12-15 17:59:41 +00:00
65 lines
2.3 KiB
Plaintext
65 lines
2.3 KiB
Plaintext
# 2013-11-21
|
|
#
|
|
# The author disclaims copyright to this source code. In place of
|
|
# a legal notice, here is a blessing:
|
|
#
|
|
# May you do good and not evil.
|
|
# May you find forgiveness for yourself and forgive others.
|
|
# May you share freely, never taking more than you give.
|
|
#
|
|
#*************************************************************************
|
|
#
|
|
# Testing of function factoring and the SQLITE_DETERMINISTIC flag.
|
|
#
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
# Verify that constant string expressions that get factored into initializing
|
|
# code are not reused between function parameters and other values in the
|
|
# VDBE program, as the function might have changed the encoding.
|
|
#
|
|
do_execsql_test func5-1.1 {
|
|
PRAGMA encoding=UTF16le;
|
|
CREATE TABLE t1(x,a,b,c);
|
|
INSERT INTO t1 VALUES(1,'ab','cd',1);
|
|
INSERT INTO t1 VALUES(2,'gh','ef',5);
|
|
INSERT INTO t1 VALUES(3,'pqr','fuzzy',99);
|
|
INSERT INTO t1 VALUES(4,'abcdefg','xy',22);
|
|
INSERT INTO t1 VALUES(5,'shoe','mayer',2953);
|
|
SELECT x FROM t1 WHERE c=instr('abcdefg',b) OR a='abcdefg' ORDER BY +x;
|
|
} {2 4}
|
|
do_execsql_test func5-1.2 {
|
|
SELECT x FROM t1 WHERE a='abcdefg' OR c=instr('abcdefg',b) ORDER BY +x;
|
|
} {2 4}
|
|
|
|
# Verify that SQLITE_DETERMINISTIC functions get factored out of the
|
|
# evaluation loop whereas non-deterministic functions do not. counter1()
|
|
# is marked as non-deterministic and so is not factored out of the loop,
|
|
# and it really is non-deterministic, returning a different result each
|
|
# time. But counter2() is marked as deterministic, so it does get factored
|
|
# out of the loop. counter2() has the same implementation as counter1(),
|
|
# returning a different result on each invocation, but because it is
|
|
# only invoked once outside of the loop, it appears to return the same
|
|
# result multiple times.
|
|
#
|
|
do_execsql_test func5-2.1 {
|
|
CREATE TABLE t2(x,y);
|
|
INSERT INTO t2 VALUES(1,2),(3,4),(5,6),(7,8);
|
|
SELECT x, y FROM t2 WHERE x+5=5+x ORDER BY +x;
|
|
} {1 2 3 4 5 6 7 8}
|
|
sqlite3_create_function db
|
|
do_execsql_test func5-2.2 {
|
|
SELECT x, y FROM t2
|
|
WHERE x+counter1('hello')=counter1('hello')+x
|
|
ORDER BY +x;
|
|
} {}
|
|
set cvalue [db one {SELECT counter2('hello')+1}]
|
|
do_execsql_test func5-2.3 {
|
|
SELECT x, y FROM t2
|
|
WHERE x+counter2('hello')=$cvalue+x
|
|
ORDER BY +x;
|
|
} {1 2 3 4 5 6 7 8}
|
|
|
|
|
|
finish_test
|