Description:
When using mysql client with "--column-type-info", the flags value for column count(*) are different between 2 group by queries(with "NOT_NULL NUM" and "NOT_NULL BINARY NUM" respectively as below). From the user's point of view they should be same.
How to repeat:
mysql> create table t1 (c1 int);
Query OK, 0 rows affected (0.08 sec)
mysql> insert into t1 values(1),(2),(3),(4);
Query OK, 4 rows affected (0.01 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> select count(*) from t1 group by c1;
Field 1: `count(*)`
Catalog: `def`
Database: ``
Table: ``
Org_table: ``
Type: LONGLONG
Collation: binary (63)
Length: 21
Max_length: 1
Decimals: 0
Flags: NOT_NULL NUM
+----------+
| count(*) |
+----------+
| 1 |
| 1 |
| 1 |
| 1 |
+----------+
4 rows in set (0.00 sec)
mysql> select count(*) from t1;
Field 1: `count(*)`
Catalog: `def`
Database: ``
Table: ``
Org_table: ``
Type: LONGLONG
Collation: binary (63)
Length: 21
Max_length: 1
Decimals: 0
Flags: NOT_NULL BINARY NUM
+----------+
| count(*) |
+----------+
| 4 |
+----------+
1 row in set (0.15 sec)
