MySQL SELECT, store in a variable
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03-10-2019 - |
Question
For a stored procedure, I want to do a SELECT, and store a column's value into a variable.
How do I do this?
I want to do something like this:
DECLARE countTemp INT;
SET countTemp=(SELECT COUNT(Name) FROM mytable WHERE Name= var_name LIMIT 0,1);
OR, like this :
DECLARE countTemp INT;
SELECT countTemp=ColumnXYZ FROM mytable WHERE Name= var_name LIMIT 0,1;
But, I tried these and MySQL says my syntax is incorrect; how do I do something like this?
Solution
Like this :
DECLARE myvar nvarchar(50);
SELECT ATextColumn INTO myvar FROM myTable LIMIT 1,1;
SELECT CONCAT('myvar is ',myvar ,' .');
http://www.java2s.com/Code/SQL/Procedure-Function/UseselectintotoassignvaluetoanIntegervariable.htm
OTHER TIPS
You can easily set the variable in the select query
SELECT @countTemp := ColumnXYZ FROM mytable WHERE Name= var_name LIMIT 0,1;
@countTemp is your variable!
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