diff options
| -rw-r--r-- | mysql-test/r/subselect.result | 21 | ||||
| -rw-r--r-- | mysql-test/t/subselect.test | 22 | ||||
| -rw-r--r-- | sql/item.h | 1 | ||||
| -rw-r--r-- | sql/item_subselect.cc | 1 |
4 files changed, 45 insertions, 0 deletions
diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result index 056457a4786..e4bc59e4d19 100644 --- a/mysql-test/r/subselect.result +++ b/mysql-test/r/subselect.result @@ -3183,3 +3183,24 @@ select * from (select min(i) from t1 where j=(select * from (select min(j) from min(i) 1 drop table t1; +CREATE TABLE t1 (i BIGINT UNSIGNED); +INSERT INTO t1 VALUES (10000000000000000000); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (i BIGINT UNSIGNED); +INSERT INTO t2 VALUES (10000000000000000000); +INSERT INTO t2 VALUES (1); +/* simple test */ +SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i; +i +10000000000000000000 +1 +/* subquery test */ +SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2); +i +10000000000000000000 +/* subquery test with cast*/ +SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED); +i +10000000000000000000 +DROP TABLE t1; +DROP TABLE t2; diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index 3f48b648f40..8916a5cec6d 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -2109,3 +2109,25 @@ insert into t1 values (1, 2), (2, 2), (3, 2); select * from (select min(i) from t1 where j=(select * from (select min(j) from t1) t2)) t3; drop table t1; +# +# Bug#19700: subselect returning BIGINT always returned it as SIGNED +# +CREATE TABLE t1 (i BIGINT UNSIGNED); +INSERT INTO t1 VALUES (10000000000000000000); -- > MAX SIGNED BIGINT 9323372036854775807 +INSERT INTO t1 VALUES (1); + +CREATE TABLE t2 (i BIGINT UNSIGNED); +INSERT INTO t2 VALUES (10000000000000000000); -- same as first table +INSERT INTO t2 VALUES (1); + +/* simple test */ +SELECT t1.i FROM t1 JOIN t2 ON t1.i = t2.i; + +/* subquery test */ +SELECT t1.i FROM t1 WHERE t1.i = (SELECT MAX(i) FROM t2); + +/* subquery test with cast*/ +SELECT t1.i FROM t1 WHERE t1.i = CAST((SELECT MAX(i) FROM t2) AS UNSIGNED); + +DROP TABLE t1; +DROP TABLE t2; diff --git a/sql/item.h b/sql/item.h index 28b1f54add7..3c93ca2bc55 100644 --- a/sql/item.h +++ b/sql/item.h @@ -2243,6 +2243,7 @@ public: max_length= item->max_length; decimals= item->decimals; collation.set(item->collation); + unsigned_flag= item->unsigned_flag; return 0; }; virtual void store(Item *)= 0; diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc index 87ef0fc080e..dda1b46ab10 100644 --- a/sql/item_subselect.cc +++ b/sql/item_subselect.cc @@ -404,6 +404,7 @@ void Item_singlerow_subselect::fix_length_and_dec() engine->fix_length_and_dec(row); value= *row; } + unsigned_flag= value->unsigned_flag; /* If there are not tables in subquery then ability to have NULL value depends on SELECT list (if single row subquery have tables then it |