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sqlite/test/countofview.test
drh 73c53b39c9 Fix the count-of-view optimization so that it is (correctly) disabled for
a query that includes a WHERE clause or a GROUP BY clause.

FossilOrigin-Name: 05897ca48a40c6771ff83ba8ecc3a5c60dafddf58651c222dd8cf89b9fc7b077
2019-05-15 18:42:15 +00:00

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# 2018-08-04
#
# 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.
#
#***********************************************************************
#
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/malloc_common.tcl
set testprefix countofview
do_execsql_test 1.0 {
CREATE TABLE t2(c);
CREATE TABLE t3(f);
INSERT INTO t2 VALUES(1), (2);
INSERT INTO t3 VALUES(3);
}
do_execsql_test 1.1 {
select c from t2 union all select f from t3 limit 1 offset 1
} {2}
do_execsql_test 1.2 {
select count(*) from (
select c from t2 union all select f from t3 limit 1 offset 1
)
} {1}
do_execsql_test 1.3 {
select count(*) from (
select c from t2 union all select f from t3
)
} {3}
# 2019-05-15
do_execsql_test 2.0 {
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(1),(99),('abc');
CREATE VIEW v1(x,y) AS SELECT x,1 FROM t1 UNION ALL SELECT x,2 FROM t1;
SELECT count(*) FROM v1 WHERE x<>1;
} {4}
do_execsql_test 2.1 {
SELECT count(*) FROM v1 GROUP BY y;
} {3 3}
finish_test