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In a stored procedure, is it possible to get the total number or rows updated by different statements?

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I have a bunch of stored procedures that look like something this

CREATE PROCEDURE example()
BEGIN
    UPDATE STATEMENT A;
    UPDATE STATEMENT B;
    UPDATE STATEMENT C;
END//

When I run them through MySQLWorkbench after it completes they will return a response of,

5 row(s) affected

However that is only the count for the rows updated by the last statement, not all of the rows effected by the stored procedure.

Is there a way to write the stored procedure so that the number of rows effected will be the total number of rows instead of just the last update?

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2 answers

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This is possible in SQL Server using the built-in @@ROWCOUNT variable. Something like this

DECLARE @rows INT = 0;

-- INSERT ...
SET @rows = @rows + @@ROWCOUNT;

-- UPDATE ...
SET @rows = @rows + @@ROWCOUNT;

-- DELETE ...
SET @rows = @rows + @@ROWCOUNT;

-- SELECT ...
SET @rows = @rows + @@ROWCOUNT;

SELECT @rows AS Rows

MySQL has the FOUND_ROWS() function, but it only works on SELECTs.

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One rather complicated way to get what you want (may be extended to multiple calls of statements and/or procedures) is through usage of MySQL Row-Based Binary Logs as explained here.

This allows for MYSQL to generate logs with affected rows that will be output like:

[Transaction total : 10 Insert(s) : 5 Update(s) : 4 Delete(s) : 1] 

Applying ShowMeBilly's solution to MySQL you can accumulate rows affected by using mysql_affected_rows().

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