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How to store Query Result in a variable using MySQL?
To store query result in a variable with MySQL, use the SET command. The syntax is as follows −
SET @anyVariableName = ( yourQuery);
To understand the above concept, let us create a table. The following is the query to create a table −
mysql> create table QueryResultDemo −> ( −> Price int −> ); Query OK, 0 rows affected (0.59 sec)
Now let us insert some records into the table. The following is the query to insert records −
mysql> insert into QueryResultDemo values(100); Query OK, 1 row affected (0.17 sec) mysql> insert into QueryResultDemo values(20); Query OK, 1 row affected (0.13 sec) mysql> insert into QueryResultDemo values(200); Query OK, 1 row affected (0.10 sec) mysql> insert into QueryResultDemo values(80); Query OK, 1 row affected (0.15 sec)
Display all records from the table with the help of select statement. The query to display all records is as follows −
mysql> select *from QueryResultDemo;
The following is the output −
+-------+ | Price | +-------+ | 100 | | 20 | | 200 | | 80 | +-------+ 4 rows in set (0.00 sec)
Now you can set the query result in a variable with the help of SET command. The query is as follows.
mysql> Set @TotalPrice = (select sum(Price) from QueryResultDemo); Query OK, 0 rows affected (0.00 sec)
Check what is the value stored in variable “TotalPrice”, using the SELECT statement −
mysql> select @TotalPrice;
The following is the output −
+-------------+ | @TotalPrice | +-------------+ | 400 | +-------------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
7K+ Views
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