AryaWu/sqlite

1# 2019 September 102#3# The author disclaims copyright to this source code.  In place of4# a legal notice, here is a blessing:5#6#    May you do good and not evil.7#    May you find forgiveness for yourself and forgive others.8#    May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library. In particular,12# that problems related to ticket a7debbe0ad1 have been fixed.13#14 15set testdir [file dirname $argv0]16source $testdir/tester.tcl17set testprefix tkt-a7debbe018 19foreach tn {1 2} {20  reset_db21  if {$tn==1} {22    # Disable the flattener23    optimization_control db query-flattener 024  } else {25    # Enable the flattener26    optimization_control db query-flattener 127  }28 29  do_execsql_test $tn.1.0 {30    CREATE TABLE t0(xyz INTEGER);31    INSERT INTO t0(xyz) VALUES(456);32    CREATE VIEW v2(a, B) AS 33        SELECT 'a', 'B' COLLATE NOCASE FROM t0;34    CREATE TABLE t2(a, B COLLATE NOCASE);35    INSERT INTO t2 VALUES('a', 'B');36    CREATE VIEW v3(a, B) AS37        SELECT 'a' COLLATE BINARY, 'B' COLLATE NOCASE FROM t0;38 39    CREATE VIEW v4(a, B) AS40        SELECT 'a', +CAST('B' COLLATE NOCASE AS TEXT) FROM t0;41 42    CREATE VIEW v5(a, B) AS43        SELECT 'a', ('B' COLLATE NOCASE) || '' FROM t0;44  }45 46  # Table t2 and views v2 through v5 should all be equivalent.47  do_execsql_test $tn.1.1.1 { SELECT a   >= B FROM t2;         } 148  do_execsql_test $tn.1.1.2 { SELECT 'a' >= 'B' COLLATE NOCASE } 049  do_execsql_test $tn.1.1.3 { SELECT a   >= B FROM v2          } 150  do_execsql_test $tn.1.1.4 { SELECT a   >= B FROM v3          } 151  do_execsql_test $tn.1.1.5 { SELECT a   >= B FROM v4          } 152  do_execsql_test $tn.1.1.6 { SELECT a   >= B FROM v5          } 153 54  do_execsql_test $tn.1.2.1 { SELECT B   < a FROM t2           } 055  do_execsql_test $tn.1.2.2 { SELECT 'B' COLLATE NOCASE < 'a'  } 056  do_execsql_test $tn.1.2.3 { SELECT B   < a FROM v2           } 057  do_execsql_test $tn.1.2.4 { SELECT B   < a FROM v3           } 058  do_execsql_test $tn.1.2.5 { SELECT a  < B FROM v4           } 059  do_execsql_test $tn.1.2.6 { SELECT a  < B FROM v5           } 060 61  #-------------------------------------------------------------------------62  do_execsql_test $tn.2.0 {63    CREATE TABLE t5(a, b COLLATE NOCASE);64    INSERT INTO t5 VALUES(1, 'XYZ');65  }66 67  # Result should be 0, as column "xyz" from the sub-query has implicit68  # collation sequence BINARY.69  do_execsql_test $tn.2.1 {70    SELECT xyz==b FROM ( SELECT a, 'xyz' AS xyz FROM t5 ), t5;71  } {0}72 73  # Result should be 1, as literal 'xyz' has no collation sequence, so74  # the comparison uses the implicit collation sequence of the RHS - NOCASE.75  do_execsql_test $tn.2.2 {76    SELECT 'xyz'==b FROM ( SELECT a, 'xyz' AS xyz FROM t5 ), t5;77  } {1}78 79  #-----------------------------------------------------------------------80  # The test case submitted with the ticket.81  #82  do_execsql_test $tn.3.0 {83    DROP TABLE t0;84    DROP VIEW v2;85 86    CREATE TABLE t0(c0);87    INSERT INTO t0(c0) VALUES('');88    CREATE VIEW v2(c0, c1) AS 89        SELECT 'B' COLLATE NOCASE, 'a' FROM t0 ORDER BY t0.c0;90    SELECT SUM(count) FROM (91      SELECT v2.c1 BETWEEN v2.c0 AND v2.c1 as count FROM v292    );93  } 194 95  # The result is 1, as the collation used is the implicit collation sequence96  # of v2.c1 - BINARY.97  do_execsql_test $tn.3.1 {98    SELECT v2.c1 BETWEEN v2.c0 AND v2.c1 as count FROM v2;99  } 1100}101 102finish_test103