68 lines
1.4 KiB
Plaintext
68 lines
1.4 KiB
Plaintext
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# 2024-06-06
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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# Test cases for query plans using LIMIT
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix wherelimit3
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do_execsql_test 1.0 {
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CREATE TABLE t1(a INT, b INT);
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WITH RECURSIVE c(n) AS (VALUES(1) UNION ALL SELECT n+1 FROM c WHERE n<1000)
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INSERT INTO t1 SELECT n, n FROM c;
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CREATE INDEX t1a ON t1(a);
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CREATE INDEX t1b ON t1(b);
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ANALYZE;
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}
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do_eqp_test 1.1 {
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SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT 5;
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} {
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QUERY PLAN
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|--SEARCH t1 USING INDEX t1a (a>? AND a<?)
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`--USE TEMP B-TREE FOR ORDER BY
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}
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ifcapable stat4 {
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do_eqp_test 1.2 {
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SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT -1;
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} {
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QUERY PLAN
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`--SCAN t1 USING INDEX t1b
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}
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}
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set N [expr 5]
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do_eqp_test 1.3 {
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SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT $::N;
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} {
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QUERY PLAN
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|--SEARCH t1 USING INDEX t1a (a>? AND a<?)
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`--USE TEMP B-TREE FOR ORDER BY
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}
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ifcapable stat4 {
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set N [expr -1]
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do_eqp_test 1.4 {
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SELECT * FROM t1 WHERE a>=100 AND a<300 ORDER BY b LIMIT $::N;
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} {
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QUERY PLAN
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`--SCAN t1 USING INDEX t1b
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}
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}
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finish_test
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