Jark Wu created FLINK-21774:
-------------------------------
Summary: Do not display column names when retrun set is emtpy in
SQL Client
Key: FLINK-21774
URL: https://issues.apache.org/jira/browse/FLINK-21774
Project: Flink
Issue Type: Sub-task
Components: Table SQL / Client
Reporter: Jark Wu
Currently, SQL Client will display column names even if the return set is empty:
{code}
SHOW MODULES;
+-------------+
| module name |
+-------------+
0 row in set
!ok
{code}
In mature databases, e.g. MySQL, they only show "Empty Set" instead of column
names:
{code}
mysql> show tables;
Empty set (0.00 sec)
{code}
We can improve this by simply omit the column names header.
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