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Minor changes and coverge tests for "SELECT count(*)" optimization. (CVS 6324)

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FossilOrigin-Name: a3695b98f63fb776c3b7f77f0553e8a38bcc6f78
This commit is contained in:
danielk1977
2009-02-25 08:56:47 +00:00
parent 11b57d6929
commit 02f33725d2
5 changed files with 73 additions and 15 deletions
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33
test/count.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing "SELECT count(*)" statements.
#
# $Id: count.test,v 1.2 2009/02/24 18:33:15 danielk1977 Exp $
# $Id: count.test,v 1.3 2009/02/25 08:56:47 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -138,6 +138,14 @@ do_test count-2.13 {
uses_op_count {SELECT count(*) FROM t1, t2}
} {0}
ifcapable vtab {
register_echo_module [sqlite3_connection_pointer db]
do_test count-2.14 {
execsql { CREATE VIRTUAL TABLE techo USING echo(t1); }
uses_op_count {SELECT count(*) FROM techo}
} {0}
}
do_test count-3.1 {
execsql {
CREATE TABLE t3(a, b);
@ -150,5 +158,28 @@ do_test count-3.2 {
}
} {}
do_test count-4.1 {
execsql {
CREATE TABLE t4(a, b);
INSERT INTO t4 VALUES('a', 'b');
CREATE INDEX t4i1 ON t4(b, a);
SELECT count(*) FROM t4;
}
} {1}
do_test count-4.2 {
execsql {
CREATE INDEX t4i2 ON t4(b);
SELECT count(*) FROM t4;
}
} {1}
do_test count-4.3 {
execsql {
DROP INDEX t4i1;
CREATE INDEX t4i1 ON t4(b, a);
SELECT count(*) FROM t4;
}
} {1}
finish_test