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# 2015-10-06
#
# 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 test cases for the [b65cb2c8d91f6685841d7d1e13b6]
# bug: Correct handling of LIMIT and OFFSET on a UNION ALL query where
# the right-hand SELECT contains an ORDER BY in a subquery.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !compound {
finish_test
return
}
do_execsql_test offset1-1.1 {
CREATE TABLE t1(a,b);
INSERT INTO t1 VALUES(1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e');
CREATE TABLE t2(x,y);
INSERT INTO t2 VALUES(8,'y'),(9,'z'),(6,'w'),(7,'x');
SELECT count(*) FROM t1, t2;
} {20}
do_execsql_test offset1-1.2.0 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 0;
} {1 a 2 b 3 c}
do_execsql_test offset1-1.2.1 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 1;
} {2 b 3 c 4 d}
do_execsql_test offset1-1.2.2 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 2;
} {3 c 4 d 5 e}
do_execsql_test offset1-1.2.3 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 3;
} {4 d 5 e 6 w}
do_execsql_test offset1-1.2.4 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 4;
} {5 e 6 w 7 x}
do_execsql_test offset1-1.2.5 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 5;
} {6 w 7 x 8 y}
do_execsql_test offset1-1.2.6 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 6;
} {7 x 8 y 9 z}
do_execsql_test offset1-1.2.7 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 7;
} {8 y 9 z}
do_execsql_test offset1-1.2.8 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 8;
} {9 z}
do_execsql_test offset1-1.2.9 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 9;
} {}
do_execsql_test offset1-1.3.0 {
SELECT * FROM t1 LIMIT 0;
} {}
do_execsql_test offset1-1.4.0 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 0 OFFSET 1;
} {}
do_execsql_test offset1-1.4.1 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 1 OFFSET 1;
} {2 b}
do_execsql_test offset1-1.4.2 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 2 OFFSET 1;
} {2 b 3 c}
do_execsql_test offset1-1.4.3 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 3 OFFSET 1;
} {2 b 3 c 4 d}
do_execsql_test offset1-1.4.4 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 4 OFFSET 1;
} {2 b 3 c 4 d 5 e}
do_execsql_test offset1-1.4.5 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 5 OFFSET 1;
} {2 b 3 c 4 d 5 e 6 w}
do_execsql_test offset1-1.4.6 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 6 OFFSET 1;
} {2 b 3 c 4 d 5 e 6 w 7 x}
do_execsql_test offset1-1.4.7 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 7 OFFSET 1;
} {2 b 3 c 4 d 5 e 6 w 7 x 8 y}
do_execsql_test offset1-1.4.8 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 8 OFFSET 1;
} {2 b 3 c 4 d 5 e 6 w 7 x 8 y 9 z}
do_execsql_test offset1-1.4.9 {
SELECT a, b FROM t1
UNION ALL
SELECT * FROM (SELECT x, y FROM t2 ORDER BY y)
LIMIT 9 OFFSET 1;
} {2 b 3 c 4 d 5 e 6 w 7 x 8 y 9 z}
# 2022-08-04
# https://sqlite.org/forum/forumpost/6b5e9188f0657616
#
do_execsql_test offset1-2.0 {
CREATE TABLE employees (
id integer primary key,
name text,
city text,
department text,
salary integer
);
INSERT INTO employees VALUES
(11,'Diane','London','hr',70),
(12,'Bob','London','hr',78),
(21,'Emma','London','it',84),
(22,'Grace','Berlin','it',90),
(23,'Henry','London','it',104),
(24,'Irene','Berlin','it',104),
(25,'Frank','Berlin','it',120),
(31,'Cindy','Berlin','sales',96),
(32,'Dave','London','sales',96),
(33,'Alice','Berlin','sales',100);
CREATE VIEW v AS
SELECT * FROM (
SELECT * FROM employees
WHERE salary < 100
ORDER BY salary desc)
UNION ALL
SELECT * FROM (
SELECT * FROM employees
WHERE salary >= 100
ORDER BY salary asc);
} {}
do_execsql_test offset1-2.1 {
SELECT * FROM v LIMIT 5 OFFSET 2;
} {
22 Grace Berlin it 90
21 Emma London it 84
12 Bob London hr 78
11 Diane London hr 70
33 Alice Berlin sales 100
}
finish_test
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