You can use the CEIL() function from MySQL. Let us first create a table. Here, we have taken the first column as VARCHAR −
mysql> create table DemoTable -> ( -> Value varchar(20), -> UpdateValue int -> ); Query OK, 0 rows affected (1.08 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(Value) values('100'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable(Value) values('false'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(Value) values('true'); Query OK, 1 row affected (0.07 sec) mysql> insert into DemoTable(Value) values('1'); Query OK, 1 row affected (0.07 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------+-------------+ | Value | UpdateValue | +-------+-------------+ | 100 | NULL | | false | NULL | | true | NULL | | 1 | NULL | +-------+-------------+ 4 rows in set (0.00 sec)
Following is the query to cast and update a numeric value from string column only where applicable −
mysql> update DemoTable -> set UpdateValue=ceil(cast(Value AS char(7))); Query OK, 4 rows affected (0.18 sec) Rows matched: 4 Changed: 4 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+-------+-------------+ | Value | UpdateValue | +-------+-------------+ | 100 | 100 | | false | 0 | | true | 0 | | 1 | 1 | +-------+-------------+ 4 rows in set (0.00 sec)