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Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions

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- Honor unsigned_flag in the corresponding functions
- Use compare_int_signed_unsigned()/compare_int_unsigned_signed() instead of explicit comparison in GREATEST() and LEAST()


mysql-test/r/case.result:
  Added test case for bug #20924
mysql-test/r/func_if.result:
  Added test case for bug #20924
mysql-test/r/func_test.result:
  Added test case for bug #20924
mysql-test/r/user_var.result:
  Added test case for bug #20924
mysql-test/t/case.test:
  Added test case for bug #20924
mysql-test/t/func_if.test:
  Added test case for bug #20924
mysql-test/t/func_test.test:
  Added test case for bug #20924
mysql-test/t/user_var.test:
  Added test case for bug #20924
sql/item_cmpfunc.cc:
  Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions
  
  - Moved some code out of Arg_comparator to external functions to be reused in Item_func_min_max
  - Fixed IFNULL(), IF(), CASE() and COALESCE()
sql/item_cmpfunc.h:
  Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions
  
  - Moved some code out of Arg_comparator to external functions to be reused in Item_func_min_max
sql/item_func.cc:
  Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions
  
  Fixed LEAST(), GREATEST() and "SET @a=..." parts
sql/item_func.h:
  Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions
  
  Fixed "SET @a=..." part
sql/sql_class.h:
  Bug #20924: CAST(expr as UNSIGNED) returns SIGNED value when used in various functions
  
  Fixed "SET @a=..." part
This commit is contained in:
unknown 2006-09-08 14:08:29 +04:00
commit f64483cb90
13 changed files with 105 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

6
mysql-test/r/case.result
View file

@ -177,3 +177,9 @@ from t1 where b=3 group by b;
min(a) min(case when 1=1 then a else NULL end) min(case when 1!=1 then NULL else a end)
2 2 2
drop table t1;
SELECT CASE 1 WHEN 1 THEN 18446744073709551615 ELSE 1 END;
CASE 1 WHEN 1 THEN 18446744073709551615 ELSE 1 END
18446744073709551615
SELECT COALESCE(18446744073709551615);
COALESCE(18446744073709551615)
18446744073709551615

6
mysql-test/r/func_if.result
View file

@ -99,3 +99,9 @@ a NULLIF(a,'')
NULL NULL
NULL
DROP TABLE t1;
SELECT IF(1 != 0, 18446744073709551615, 1);
IF(1 != 0, 18446744073709551615, 1)
18446744073709551615
SELECT IFNULL(NULL, 18446744073709551615);
IFNULL(NULL, 18446744073709551615)
18446744073709551615

6
mysql-test/r/func_test.result
View file

@ -183,3 +183,9 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3;
select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3;
5 mod 3 5 mod -3 -5 mod 3 -5 mod -3
2 2 -2 -2
SELECT GREATEST(1, 18446744073709551615);
GREATEST(1, 18446744073709551615)
18446744073709551615
SELECT LEAST(1, 18446744073709551615);
LEAST(1, 18446744073709551615)
1

4
mysql-test/r/user_var.result
View file

@ -203,3 +203,7 @@ select @@global.version;
select @@session.VERSION;
@@session.VERSION
#
set @a=18446744073709551615;
select @a;
@a
18446744073709551615