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Update all the zero values with a custom value in MySQL with a function similar to ISNULL()
For this, you can use custom IF() and set a value whenever 0 appears.
Let us first create a table −
mysql> create table DemoTable749 (Value int); Query OK, 0 rows affected (1.02 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable749 values(10); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable749 values(0); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable749 values(769); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable749 values(0); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable749 values(78); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable749 values(0); Query OK, 1 row affected (0.17 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable749 ;
This will produce the following output -
+-------+ | Value | +-------+ | 10 | | 0 | | 769 | | 0 | | 78 | | 0 | +-------+ 6 rows in set (0.00 sec)
Following is the query to check for zero value −
mysql> select *,if(Value=0,100000,Value) from DemoTable749;
This will produce the following output -
+-------+--------------------------+ | Value | if(Value=0,100000,Value) | +-------+--------------------------+ | 10 | 10 | | 0 | 100000 | | 769 | 769 | | 0 | 100000 | | 78 | 78 | | 0 | 100000 | +-------+--------------------------+ 6 rows in set (0.00 sec)
Updated on: 03-Sep-2019
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