Passing an integer array to mysql procedure

Question

I want to create a stored procedure which receives array of integers and some other input, for example:

CREATE PROCEDURE test (field1 varchar(4), field2 varchar(4), array varchar (255))

and in the stored procedure I want to use it like this:

...
WHERE some_field IN (array)
...

The problem is that in this way I am getting only the rows which correspondence to the first integer in the array.

Is there any way to make it work (I also tried to use FIND_IN_SET but it did exactly the same as IN)?

The call that I am making for testing the stored procedure is CALL test (12, 13, '1, 2, 3').

Answer 1

FIND_IN_SET() works, but you can't have spaces in the string of numbers.

Demo:

mysql> select find_in_set(2, '1, 2, 3');
+---------------------------+
| find_in_set(2, '1, 2, 3') |
+---------------------------+
|                         0 |
+---------------------------+

mysql> select find_in_set(2, '1,2,3');
+-------------------------+
| find_in_set(2, '1,2,3') |
+-------------------------+
|                       2 |
+-------------------------+

So you should either form the list with no spaces before you pass it to your procedure, or else in the procedure, use REPLACE() to strip out spaces.

Answer 2

There no array concept. So what you can do probably is like

Your array variable has values '1, 2, 3' as string

1. split the string with , as delimiter which will

2. insert each value to a temporary table

so your temp table will have 1,2,3

Finally just use your temp table like

 WHERE some_field IN (select array_id from temp_table)