What is the proper way to insert an IF statement into a MySQL query?
To insert an IF statement into a MySQL query, use the below syntax::
select yourColumnName ,if(yourCondition, yourStatement1,yourStatement2) from yourTableName;
Let us first create a table −
mysql> create table DemoTable1571
-> (
-> Id int,
-> Value int
-> );
Query OK, 0 rows affected (5.63 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1571 values(101,500);
Query OK, 1 row affected (1.07 sec)
mysql> insert into DemoTable1571 values(102,450);
Query OK, 1 row affected (0.47 sec)
mysql> insert into DemoTable1571 values(103,300);
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable1571 values(104,700);
Query OK, 1 row affected (0.23 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable1571;
This will produce the following output
+------+-------+
| Id | Value |
+------+-------+
| 101 | 500 |
| 102 | 450 |
| 103 | 300 |
| 104 | 700 |
+------+-------+
4 rows in set (0.00 sec)
Here is the query to properly insert an if statement into a MySQL query.
mysql> select Value,if(Value > 550, 'Value is greater than 550','Value is less than 550') from DemoTable1571;
This will produce the following output −
+-------+-----------------------------------------------------------------------+
| Value | if(Value > 550, 'Value is greater than 550','Value is less than 550') |
+-------+-----------------------------------------------------------------------+
| 500 | Value is less than 550 |
| 450 | Value is less than 550 |
| 300 | Value is less than 550 |
| 700 | Value is greater than 550 |
+-------+-----------------------------------------------------------------------+
4 rows in set (0.00 sec)
Published on 16-Dec-2019 10:28:37
