diff options
Diffstat (limited to 'test/minmax.test')
| -rw-r--r-- | test/minmax.test | 92 |
1 files changed, 91 insertions, 1 deletions
diff --git a/test/minmax.test b/test/minmax.test index 5990245..fb9bbb3 100644 --- a/test/minmax.test +++ b/test/minmax.test @@ -17,6 +17,7 @@ set testdir [file dirname $argv0] source $testdir/tester.tcl +set ::testprefix minmax do_test minmax-1.0 { execsql { @@ -299,7 +300,7 @@ ifcapable {compound && subquery} { SELECT max(rowid) FROM t4 UNION SELECT max(rowid) FROM t5 ) } - } {1} + } {{}} do_test minmax-9.2 { execsql { SELECT max(rowid) FROM ( @@ -536,7 +537,96 @@ do_test minmax-12.17 { } } {5} +#------------------------------------------------------------------------- +reset_db + +proc do_test_13 {op name sql1 sql2 res} { + set ::sqlite_search_count 0 + uplevel [list do_execsql_test $name.1 $sql1 $res] + set a $::sqlite_search_count + + set ::sqlite_search_count 0 + uplevel [list do_execsql_test $name.2 $sql2 $res] + set b $::sqlite_search_count + + uplevel [list do_test $name.3 [list expr "$a $op $b"] 1] +} + +# Run a test named $name. Check that SQL statements $sql1 and $sql2 both +# return the same result, but that $sql2 increments the $sqlite_search_count +# variable more often (indicating that it is visiting more rows to determine +# the result). +# +proc do_test_13_opt {name sql1 sql2 res} { + uplevel [list do_test_13 < $name $sql1 $sql2 $res] +} + +# Like [do_test_13_noopt], except this time check that the $sqlite_search_count +# variable is incremented the same number of times by both SQL statements. +# +proc do_test_13_noopt {name sql1 sql2 res} { + uplevel [list do_test_13 == $name $sql1 $sql2 $res] +} + +do_execsql_test 13.1 { + CREATE TABLE t1(a, b, c); + INSERT INTO t1 VALUES('a', 1, 1); + INSERT INTO t1 VALUES('b', 6, 6); + INSERT INTO t1 VALUES('c', 5, 5); + INSERT INTO t1 VALUES('a', 4, 4); + INSERT INTO t1 VALUES('a', 5, 5); + INSERT INTO t1 VALUES('c', 6, 6); + INSERT INTO t1 VALUES('b', 4, 4); + INSERT INTO t1 VALUES('c', 7, 7); + INSERT INTO t1 VALUES('b', 2, 2); + INSERT INTO t1 VALUES('b', 3, 3); + INSERT INTO t1 VALUES('a', 3, 3); + INSERT INTO t1 VALUES('b', 5, 5); + INSERT INTO t1 VALUES('c', 4, 4); + INSERT INTO t1 VALUES('c', 3, 3); + INSERT INTO t1 VALUES('a', 2, 2); + SELECT * FROM t1 ORDER BY a, b, c; +} {a 1 1 a 2 2 a 3 3 a 4 4 a 5 5 + b 2 2 b 3 3 b 4 4 b 5 5 b 6 6 + c 3 3 c 4 4 c 5 5 c 6 6 c 7 7 +} +do_execsql_test 13.2 { CREATE INDEX i1 ON t1(a, b, c) } + +do_test_13_opt 13.3 { + SELECT min(b) FROM t1 WHERE a='b' +} { + SELECT min(c) FROM t1 WHERE a='b' +} {2} + +do_test_13_opt 13.4 { + SELECT a, min(b) FROM t1 WHERE a='b' +} { + SELECT a, min(c) FROM t1 WHERE a='b' +} {b 2} + +do_test_13_opt 13.4 { + SELECT a||c, max(b)+4 FROM t1 WHERE a='c' +} { + SELECT a||c, max(c)+4 FROM t1 WHERE a='c' +} {c7 11} + +do_test_13_noopt 13.5 { + SELECT a||c, max(b+1) FROM t1 WHERE a='c' +} { + SELECT a||c, max(c+1) FROM t1 WHERE a='c' +} {c7 8} + +do_test_13_noopt 13.6 { + SELECT count(b) FROM t1 WHERE a='c' +} { + SELECT count(c) FROM t1 WHERE a='c' +} {5} +do_test_13_noopt 13.7 { + SELECT min(b), count(b) FROM t1 WHERE a='a'; +} { + SELECT min(c), count(c) FROM t1 WHERE a='a'; +} {1 5} finish_test |