File: window_functions_in2exists.inc

package info (click to toggle)
mysql-8.0 8.0.43-3
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,273,924 kB
  • sloc: cpp: 4,684,605; ansic: 412,450; pascal: 108,398; java: 83,641; perl: 30,221; cs: 27,067; sql: 26,594; sh: 24,181; python: 21,816; yacc: 17,169; php: 11,522; xml: 7,388; javascript: 7,076; makefile: 2,194; lex: 1,075; awk: 670; asm: 520; objc: 183; ruby: 97; lisp: 86
file content (51 lines) | stat: -rw-r--r-- 1,941 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
# Some cases where there's a window function in the SELECT list
# and we cannot materialize (e.g. due to correlation), so we are
# forced to use in2exists. The old optimizer cannot handle these
# and must give ER_NOT_SUPPORTED_YET. The hypergraph optimizer,
# on the other hand, can split these out of HAVING and execute them
# correctly. Thus, we include this file from separate .test files
# that run only under the old and hypergraph optimizer, respectively.

CREATE TABLE t(a INT);
INSERT INTO t VALUES (1),(2),(3);
ANALYZE TABLE t;

--echo =ALL => NOT EXISTS (select non-equal rows)
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t WHERE a = ALL(SELECT ROW_NUMBER() OVER () + 1 FROM t);
--echo <>SOME => EXISTS (select non-equal rows)
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t WHERE a <> SOME(SELECT ROW_NUMBER() OVER () + 1 FROM t);
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t WHERE a <> ANY(SELECT ROW_NUMBER() OVER () + 1 FROM t);

--echo # Correlated => no subquery materialization.
--echo # IN => EXISTS, error
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t upper
    WHERE upper.a IN (SELECT ROW_NUMBER() OVER () FROM t
                      WHERE t.a > upper.a);

--echo # Correlated => no subquery materialization.
--echo # >ANY => EXISTS(select smaller rows), error
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t upper
    WHERE upper.a > ANY (SELECT ROW_NUMBER() OVER () FROM t
                         WHERE t.a > upper.a);
--error 0, ER_NOT_SUPPORTED_YET
SELECT * FROM t upper
    WHERE upper.a > ALL (SELECT ROW_NUMBER() OVER () FROM t
                         WHERE t.a > upper.a);

DROP TABLE t;

--echo #
--echo # Bug#25601138 WINDOW FUNCTION IN CORRELATED SUBQUERY GIVES WRONG RESULT
--echo #

CREATE TABLE t1(i INT, j INT, k INT);
INSERT INTO t1 VALUES (1,1,1),(2,2,2);
--error 0, ER_NOT_SUPPORTED_YET
select * from t1 AS upper where i+1
 IN (select row_number() over () + upper.i from t1 );
DROP TABLE t1;