[sql] MySQL: Selecting multiple fields into multiple variables in a stored procedure

Can I SELECT multiple columns into multiple variables within the same select query in MySQL?

For example:

DECLARE iId INT(20);
DECLARE dCreate DATETIME;

SELECT Id INTO iId, dateCreated INTO dCreate 
FROM products
WHERE pName=iName;

What is the correct syntax for this?

This question is related to sql mysql stored-procedures sql-function

The answer is


Your syntax isn't quite right: you need to list the fields in order before the INTO, and the corresponding target variables after:

SELECT Id, dateCreated
INTO iId, dCreate
FROM products
WHERE pName = iName

Alternatively to Martin's answer, you could also add the INTO part at the end of the query to make the query more readable:

SELECT Id, dateCreated FROM products INTO iId, dCreate

==========Advise==========

@martin clayton Answer is correct, But this is an advise only.

Please avoid the use of ambiguous variable in the stored procedure.

Example :

SELECT Id, dateCreated
INTO id, datecreated
FROM products
WHERE pName = iName

The above example will cause an error (null value error)

Example give below is correct. I hope this make sense.

Example :

SELECT Id, dateCreated
INTO val_id, val_datecreated
FROM products
WHERE pName = iName

You can also make them unambiguous by referencing the table, like:

[ Credit : maganap ]

SELECT p.Id, p.dateCreated INTO id, datecreated FROM products p 
WHERE pName = iName

Examples related to sql

Passing multiple values for same variable in stored procedure SQL permissions for roles Generic XSLT Search and Replace template Access And/Or exclusions Pyspark: Filter dataframe based on multiple conditions Subtracting 1 day from a timestamp date PYODBC--Data source name not found and no default driver specified select rows in sql with latest date for each ID repeated multiple times ALTER TABLE DROP COLUMN failed because one or more objects access this column Create Local SQL Server database

Examples related to mysql

Implement specialization in ER diagram How to post query parameters with Axios? PHP with MySQL 8.0+ error: The server requested authentication method unknown to the client Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver' phpMyAdmin - Error > Incorrect format parameter? Authentication plugin 'caching_sha2_password' is not supported How to resolve Unable to load authentication plugin 'caching_sha2_password' issue Connection Java-MySql : Public Key Retrieval is not allowed How to grant all privileges to root user in MySQL 8.0 MySQL 8.0 - Client does not support authentication protocol requested by server; consider upgrading MySQL client

Examples related to stored-procedures

How to create temp table using Create statement in SQL Server? How do I pass a list as a parameter in a stored procedure? SQL Server IF EXISTS THEN 1 ELSE 2 Stored procedure with default parameters Could not find server 'server name' in sys.servers. SQL Server 2014 How to kill all active and inactive oracle sessions for user EXEC sp_executesql with multiple parameters MySQL stored procedure return value SQL Server: use CASE with LIKE SQL server stored procedure return a table

Examples related to sql-function

Select Rows with id having even number How to filter Pandas dataframe using 'in' and 'not in' like in SQL Calling Scalar-valued Functions in SQL How to check date of last change in stored procedure or function in SQL server How to check if a function exists on a SQL database SQL Query - Concatenating Results into One String MySQL stored procedure vs function, which would I use when? MySQL: Selecting multiple fields into multiple variables in a stored procedure How to Replace Multiple Characters in SQL? Function vs. Stored Procedure in SQL Server