# 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 $ set testdir [file dirname $argv0] source $testdir/tester.tcl # 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 # 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] } # 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 {} } 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; } } {} 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} 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} 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} 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 } } {} 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; } } {{}} 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; } } {{}} 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} finish_test