/trunk/test/minmax3.test |
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# 2008 January 5 |
# |
# 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. |
# |
#*********************************************************************** |
# $Id: minmax3.test,v 1.5 2008/07/12 14:52:20 drh Exp $ |
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set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
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# Do not use a codec for tests in this file, as the database file is |
# manipulated directly using tcl scripts (using the [hexio_write] command). |
# |
do_not_use_codec |
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# Do an SQL statement. Append the search count to the end of the result. |
# |
proc count sql { |
set ::sqlite_search_count 0 |
return [concat [execsql $sql] $::sqlite_search_count] |
} |
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# This procedure sets the value of the file-format in file 'test.db' |
# to $newval. Also, the schema cookie is incremented. |
# |
proc set_file_format {newval} { |
hexio_write test.db 44 [hexio_render_int32 $newval] |
set schemacookie [hexio_get_int [hexio_read test.db 40 4]] |
incr schemacookie |
hexio_write test.db 40 [hexio_render_int32 $schemacookie] |
return {} |
} |
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do_test minmax3-1.0 { |
execsql { |
CREATE TABLE t1(x, y, z); |
} |
db close |
set_file_format 4 |
sqlite3 db test.db |
execsql { |
BEGIN; |
INSERT INTO t1 VALUES('1', 'I', 'one'); |
INSERT INTO t1 VALUES('2', 'IV', 'four'); |
INSERT INTO t1 VALUES('2', NULL, 'three'); |
INSERT INTO t1 VALUES('2', 'II', 'two'); |
INSERT INTO t1 VALUES('2', 'V', 'five'); |
INSERT INTO t1 VALUES('3', 'VI', 'six'); |
COMMIT; |
PRAGMA automatic_index=OFF; |
} |
} {} |
do_test minmax3-1.1.1 { |
# Linear scan. |
count { SELECT max(y) FROM t1 WHERE x = '2'; } |
} {V 5} |
do_test minmax3-1.1.2 { |
# Index optimizes the WHERE x='2' constraint. |
execsql { CREATE INDEX i1 ON t1(x) } |
count { SELECT max(y) FROM t1 WHERE x = '2'; } |
} {V 9} |
do_test minmax3-1.1.3 { |
# Index optimizes the WHERE x='2' constraint and the MAX(y). |
execsql { CREATE INDEX i2 ON t1(x,y) } |
count { SELECT max(y) FROM t1 WHERE x = '2'; } |
} {V 1} |
do_test minmax3-1.1.4 { |
# Index optimizes the WHERE x='2' constraint and the MAX(y). |
execsql { DROP INDEX i2 ; CREATE INDEX i2 ON t1(x, y DESC) } |
count { SELECT max(y) FROM t1 WHERE x = '2'; } |
} {V 1} |
do_test minmax3-1.1.5 { |
count { SELECT max(y) FROM t1 WHERE x = '2' AND y != 'V'; } |
} {IV 2} |
do_test minmax3-1.1.6 { |
count { SELECT max(y) FROM t1 WHERE x = '2' AND y < 'V'; } |
} {IV 1} |
do_test minmax3-1.1.6 { |
count { SELECT max(y) FROM t1 WHERE x = '2' AND z != 'five'; } |
} {IV 4} |
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do_test minmax3-1.2.1 { |
# Linear scan of t1. |
execsql { DROP INDEX i1 ; DROP INDEX i2 } |
count { SELECT min(y) FROM t1 WHERE x = '2'; } |
} {II 5} |
do_test minmax3-1.2.2 { |
# Index i1 optimizes the WHERE x='2' constraint. |
execsql { CREATE INDEX i1 ON t1(x) } |
count { SELECT min(y) FROM t1 WHERE x = '2'; } |
} {II 9} |
do_test minmax3-1.2.3 { |
# Index i2 optimizes the WHERE x='2' constraint and the min(y). |
execsql { CREATE INDEX i2 ON t1(x,y) } |
count { SELECT min(y) FROM t1 WHERE x = '2'; } |
} {II 1} |
do_test minmax3-1.2.4 { |
# Index optimizes the WHERE x='2' constraint and the MAX(y). |
execsql { DROP INDEX i2 ; CREATE INDEX i2 ON t1(x, y DESC) } |
count { SELECT min(y) FROM t1 WHERE x = '2'; } |
} {II 1} |
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do_test minmax3-1.3.1 { |
# Linear scan |
execsql { DROP INDEX i1 ; DROP INDEX i2 } |
count { SELECT min(y) FROM t1; } |
} {I 5} |
do_test minmax3-1.3.2 { |
# Index i1 optimizes the min(y) |
execsql { CREATE INDEX i1 ON t1(y) } |
count { SELECT min(y) FROM t1; } |
} {I 1} |
do_test minmax3-1.3.3 { |
# Index i1 optimizes the min(y) |
execsql { DROP INDEX i1 ; CREATE INDEX i1 ON t1(y DESC) } |
count { SELECT min(y) FROM t1; } |
} {I 1} |
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do_test minmax3-1.4.1 { |
# Linear scan |
execsql { DROP INDEX i1 } |
count { SELECT max(y) FROM t1; } |
} {VI 5} |
do_test minmax3-1.4.2 { |
# Index i1 optimizes the max(y) |
execsql { CREATE INDEX i1 ON t1(y) } |
count { SELECT max(y) FROM t1; } |
} {VI 0} |
do_test minmax3-1.4.3 { |
# Index i1 optimizes the max(y) |
execsql { DROP INDEX i1 ; CREATE INDEX i1 ON t1(y DESC) } |
execsql { SELECT y from t1} |
count { SELECT max(y) FROM t1; } |
} {VI 0} |
do_test minmax3-1.4.4 { |
execsql { DROP INDEX i1 } |
} {} |
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do_test minmax3-2.1 { |
execsql { |
CREATE TABLE t2(a, b); |
CREATE INDEX i3 ON t2(a, b); |
INSERT INTO t2 VALUES(1, NULL); |
INSERT INTO t2 VALUES(1, 1); |
INSERT INTO t2 VALUES(1, 2); |
INSERT INTO t2 VALUES(1, 3); |
INSERT INTO t2 VALUES(2, NULL); |
INSERT INTO t2 VALUES(2, 1); |
INSERT INTO t2 VALUES(2, 2); |
INSERT INTO t2 VALUES(2, 3); |
INSERT INTO t2 VALUES(3, 1); |
INSERT INTO t2 VALUES(3, 2); |
INSERT INTO t2 VALUES(3, 3); |
} |
} {} |
do_test minmax3-2.2 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1; } |
} {1} |
do_test minmax3-2.3 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>1; } |
} {2} |
do_test minmax3-2.4 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>-1; } |
} {1} |
do_test minmax3-2.5 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1; } |
} {1} |
do_test minmax3-2.6 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<2; } |
} {1} |
do_test minmax3-2.7 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<1; } |
} {{}} |
do_test minmax3-2.8 { |
execsql { SELECT min(b) FROM t2 WHERE a = 3 AND b<1; } |
} {{}} |
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do_test minmax3-3.1 { |
execsql { |
DROP TABLE t2; |
CREATE TABLE t2(a, b); |
CREATE INDEX i3 ON t2(a, b DESC); |
INSERT INTO t2 VALUES(1, NULL); |
INSERT INTO t2 VALUES(1, 1); |
INSERT INTO t2 VALUES(1, 2); |
INSERT INTO t2 VALUES(1, 3); |
INSERT INTO t2 VALUES(2, NULL); |
INSERT INTO t2 VALUES(2, 1); |
INSERT INTO t2 VALUES(2, 2); |
INSERT INTO t2 VALUES(2, 3); |
INSERT INTO t2 VALUES(3, 1); |
INSERT INTO t2 VALUES(3, 2); |
INSERT INTO t2 VALUES(3, 3); |
} |
} {} |
do_test minmax3-3.2 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1; } |
} {1} |
do_test minmax3-3.3 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>1; } |
} {2} |
do_test minmax3-3.4 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>-1; } |
} {1} |
do_test minmax3-3.5 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1; } |
} {1} |
do_test minmax3-3.6 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<2; } |
} {1} |
do_test minmax3-3.7 { |
execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<1; } |
} {{}} |
do_test minmax3-3.8 { |
execsql { SELECT min(b) FROM t2 WHERE a = 3 AND b<1; } |
} {{}} |
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do_test minmax3-4.1 { |
execsql { |
CREATE TABLE t4(x); |
INSERT INTO t4 VALUES('abc'); |
INSERT INTO t4 VALUES('BCD'); |
SELECT max(x) FROM t4; |
} |
} {abc} |
do_test minmax3-4.2 { |
execsql { |
SELECT max(x COLLATE nocase) FROM t4; |
} |
} {BCD} |
do_test minmax3-4.3 { |
execsql { |
SELECT max(x), max(x COLLATE nocase) FROM t4; |
} |
} {abc BCD} |
do_test minmax3-4.4 { |
execsql { |
SELECT max(x COLLATE binary), max(x COLLATE nocase) FROM t4; |
} |
} {abc BCD} |
do_test minmax3-4.5 { |
execsql { |
SELECT max(x COLLATE nocase), max(x COLLATE rtrim) FROM t4; |
} |
} {BCD abc} |
do_test minmax3-4.6 { |
execsql { |
SELECT max(x COLLATE nocase), max(x) FROM t4; |
} |
} {BCD abc} |
do_test minmax3-4.10 { |
execsql { |
SELECT min(x) FROM t4; |
} |
} {BCD} |
do_test minmax3-4.11 { |
execsql { |
SELECT min(x COLLATE nocase) FROM t4; |
} |
} {abc} |
do_test minmax3-4.12 { |
execsql { |
SELECT min(x), min(x COLLATE nocase) FROM t4; |
} |
} {BCD abc} |
do_test minmax3-4.13 { |
execsql { |
SELECT min(x COLLATE binary), min(x COLLATE nocase) FROM t4; |
} |
} {BCD abc} |
do_test minmax3-4.14 { |
execsql { |
SELECT min(x COLLATE nocase), min(x COLLATE rtrim) FROM t4; |
} |
} {abc BCD} |
do_test minmax3-4.15 { |
execsql { |
SELECT min(x COLLATE nocase), min(x) FROM t4; |
} |
} {abc BCD} |
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finish_test |