COLUMN_DELETE()
This page is part of MariaDB's Enterprise Documentation.
The parent of this page is: Functions
Topics on this page:
Overview
Removes the specified dynamic column.
See also: Functions in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS
EXAMPLES
CREATE TABLE t1 (b TINYBLOB);
INSERT INTO t1 VALUES (COLUMN_CREATE('Column1','val1'));
INSERT INTO t1 VALUES (COLUMN_CREATE('Column2','val2'));
SELECT COLUMN_JSON(b) FROM t1;
+--------------------+
| COLUMN_JSON(b) |
+--------------------+
| {"Column1":"val1"} |
| {"Column2":"val2"} |
+--------------------+
UPDATE t1 SET b = COLUMN_DELETE(b,'Column2');
SELECT COLUMN_JSON(b) FROM t1;
+--------------------+
| COLUMN_JSON(b) |
+--------------------+
| {"Column1":"val1"} |
| {} |
+--------------------+
CHANGE HISTORY
Release Series | History |
---|---|
10.6 Enterprise |
|
10.6 Community |
|
10.5 Enterprise |
|
10.5 Community |
|
10.4 Enterprise |
|
10.4 Community |
|
10.3 Enterprise |
|
10.3 Community |
|
10.2 Enterprise |
|
10.2 Community |
|
EXTERNAL REFERENCES
Additional information on this topic may be found in the MariaDB Public Knowledge Base.
Information specific to MariaDB SkySQL can be found on the COLUMN_DELETE() page in the SkySQL Documentation.