68 lines
1.4 KiB
Plaintext
68 lines
1.4 KiB
Plaintext
# 2024-06-06
|
|
#
|
|
# 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.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# Test cases for query plans using LIMIT
|
|
#
|
|
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
set testprefix wherelimit3
|
|
|
|
do_execsql_test 1.0 {
|
|
CREATE TABLE t1(a INT, b INT);
|
|
WITH RECURSIVE c(n) AS (VALUES(1) UNION ALL SELECT n+1 FROM c WHERE n<1000)
|
|
INSERT INTO t1 SELECT n, n FROM c;
|
|
CREATE INDEX t1a ON t1(a);
|
|
CREATE INDEX t1b ON t1(b);
|
|
ANALYZE;
|
|
}
|
|
|
|
do_eqp_test 1.1 {
|
|
SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT 5;
|
|
} {
|
|
QUERY PLAN
|
|
|--SEARCH t1 USING INDEX t1a (a>? AND a<?)
|
|
`--USE TEMP B-TREE FOR ORDER BY
|
|
}
|
|
ifcapable stat4 {
|
|
do_eqp_test 1.2 {
|
|
SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT -1;
|
|
} {
|
|
QUERY PLAN
|
|
`--SCAN t1 USING INDEX t1b
|
|
}
|
|
}
|
|
|
|
set N [expr 5]
|
|
do_eqp_test 1.3 {
|
|
SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT $::N;
|
|
} {
|
|
QUERY PLAN
|
|
|--SEARCH t1 USING INDEX t1a (a>? AND a<?)
|
|
`--USE TEMP B-TREE FOR ORDER BY
|
|
}
|
|
|
|
ifcapable stat4 {
|
|
set N [expr -1]
|
|
do_eqp_test 1.4 {
|
|
SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT $::N;
|
|
} {
|
|
QUERY PLAN
|
|
`--SCAN t1 USING INDEX t1b
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
finish_test
|