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MDEV-33460 select '123' 'x'; unexpected result

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Queries that select concatenated constant strings now have
colname and value that match.  For example,
  SELECT '123' 'x';
will return a result where the column name and value both
are '123x'.

Review: Daniel Black
This commit is contained in:
Dave Gosselin
2024-03-13 16:56:37 -04:00
committed by Daniel Black
parent 76a27155b4
commit 58df20974b
6 changed files with 40 additions and 8 deletions
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25
mysql-test/main/empty_string_literal.result
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@ -64,7 +64,7 @@ SET sql_mode=@mode;
# Test litteral concat
#
SELECT 'a' 'b';
a
ab
ab
SELECT 'a' '';
a
@ -76,13 +76,13 @@ SELECT '' '';
NULL
NULL
SELECT '' 'b' 'c';
b
bc
bc
SELECT '' '' 'c';
c
c
SELECT 'a' '' 'c';
a
ac
ac
SELECT 'a' '' '';
a
@ -208,3 +208,22 @@ t1 CREATE TABLE `t1` (
KEY `a` (`a`,`b`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
drop table t1;
#
# MDEV-33460 select '123' 'x'; unexpected result
#
SELECT '';
NULL
NULL
SELECT '' 'b' 'c';
bc
bc
SELECT '' '' 'c';
c
c
SELECT 'a' '' 'c';
ac
ac
SELECT 'a' '' '';
a
a
# End of 10.5 test