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# 2019 September 10
#
# 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.
#
#***********************************************************************
# This file implements regression tests for SQLite library. In particular,
# that problems related to ticket a7debbe0ad1 have been fixed.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix tkt-a7debbe0
foreach tn {1 2} {
reset_db
if {$tn==1} {
# Disable the flattener
optimization_control db query-flattener 0
} else {
# Enable the flattener
optimization_control db query-flattener 1
}
do_execsql_test $tn.1.0 {
CREATE TABLE t0(xyz INTEGER);
INSERT INTO t0(xyz) VALUES(456);
CREATE VIEW v2(a, B) AS
SELECT 'a', 'B' COLLATE NOCASE FROM t0;
CREATE TABLE t2(a, B COLLATE NOCASE);
INSERT INTO t2 VALUES('a', 'B');
CREATE VIEW v3(a, B) AS
SELECT 'a' COLLATE BINARY, 'B' COLLATE NOCASE FROM t0;
CREATE VIEW v4(a, B) AS
SELECT 'a', +CAST('B' COLLATE NOCASE AS TEXT) FROM t0;
CREATE VIEW v5(a, B) AS
SELECT 'a', ('B' COLLATE NOCASE) || '' FROM t0;
}
# Table t2 and views v2 through v5 should all be equivalent.
do_execsql_test $tn.1.1.1 { SELECT a >= B FROM t2; } 1
do_execsql_test $tn.1.1.2 { SELECT 'a' >= 'B' COLLATE NOCASE } 0
do_execsql_test $tn.1.1.3 { SELECT a >= B FROM v2 } 1
do_execsql_test $tn.1.1.4 { SELECT a >= B FROM v3 } 1
do_execsql_test $tn.1.1.5 { SELECT a >= B FROM v4 } 1
do_execsql_test $tn.1.1.6 { SELECT a >= B FROM v5 } 1
do_execsql_test $tn.1.2.1 { SELECT B < a FROM t2 } 0
do_execsql_test $tn.1.2.2 { SELECT 'B' COLLATE NOCASE < 'a' } 0
do_execsql_test $tn.1.2.3 { SELECT B < a FROM v2 } 0
do_execsql_test $tn.1.2.4 { SELECT B < a FROM v3 } 0
do_execsql_test $tn.1.2.5 { SELECT a < B FROM v4 } 0
do_execsql_test $tn.1.2.6 { SELECT a < B FROM v5 } 0
#-------------------------------------------------------------------------
do_execsql_test $tn.2.0 {
CREATE TABLE t5(a, b COLLATE NOCASE);
INSERT INTO t5 VALUES(1, 'XYZ');
}
# Result should be 0, as column "xyz" from the sub-query has implicit
# collation sequence BINARY.
do_execsql_test $tn.2.1 {
SELECT xyz==b FROM ( SELECT a, 'xyz' AS xyz FROM t5 ), t5;
} {0}
# Result should be 1, as literal 'xyz' has no collation sequence, so
# the comparison uses the implicit collation sequence of the RHS - NOCASE.
do_execsql_test $tn.2.2 {
SELECT 'xyz'==b FROM ( SELECT a, 'xyz' AS xyz FROM t5 ), t5;
} {1}
#-----------------------------------------------------------------------
# The test case submitted with the ticket.
#
do_execsql_test $tn.3.0 {
DROP TABLE t0;
DROP VIEW v2;
CREATE TABLE t0(c0);
INSERT INTO t0(c0) VALUES('');
CREATE VIEW v2(c0, c1) AS
SELECT 'B' COLLATE NOCASE, 'a' FROM t0 ORDER BY t0.c0;
SELECT SUM(count) FROM (
SELECT v2.c1 BETWEEN v2.c0 AND v2.c1 as count FROM v2
);
} 1
# The result is 1, as the collation used is the implicit collation sequence
# of v2.c1 - BINARY.
do_execsql_test $tn.3.1 {
SELECT v2.c1 BETWEEN v2.c0 AND v2.c1 as count FROM v2;
} 1
}
finish_test
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