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MDEV-15475: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed on EXPLAIN EXTENDED with constant table and view

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Print constant ISNULL value independent.
Fix of printing of view FRM and CREATE VIEW output
This commit is contained in:
Oleksandr Byelkin
2018-08-06 15:50:22 +02:00
parent 074b672b5d
commit 1b797e9e63
10 changed files with 62 additions and 12 deletions
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20
mysql-test/r/func_isnull.result
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@ -106,5 +106,25 @@ Note 1003 select `test`.`t2`.`d1` AS `d1`,`test`.`t1`.`d1` AS `d1` from `test`.`
DROP VIEW v1;
DROP TABLE t1,t2;
#
# MDEV-15475: Assertion `!table || (!table->read_set ||
# bitmap_is_set(table->read_set, field_index))'
# failed on EXPLAIN EXTENDED with constant table and view
#
CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=MyISAM;
CREATE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (1);
EXPLAIN EXTENDED SELECT ISNULL(pk) FROM v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select isnull(/*always not null*/ 1) AS `ISNULL(pk)` from dual
EXPLAIN EXTENDED SELECT IFNULL(pk,0) FROM v1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
Warnings:
Note 1003 select ifnull(1,0) AS `IFNULL(pk,0)` from dual
DROP VIEW v1;
DROP TABLE t1;
#
# End of 5.5 tests
#