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Fix the handling of sub-queries with LIMIT clauses by the optimization

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activated by compile-time symbol SQLITE_COUNTOFVIEW_OPTIMIZATION.

FossilOrigin-Name: 21235d9a41567897418aa12f7bd6dd8d6ee363147527e1d8fbca14fc83e0f2c9
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dan
2018-08-03 20:19:52 +00:00
parent e4fe6d4e62
commit a4b5fb55f3
4 changed files with 65 additions and 18 deletions
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44
test/countofview.test Normal file
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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}
finish_test