I\'ve noticed something odd about user-defined variables: Lets say I have this table: num_table +---------+
I\'ve got an sql query that contains a number of statements. It: sets a user variable calls a stored procedure
I have 2 tables and a view. In product_oper I have some products that I receive (when id_dest is 1) and that I sell (when id_src is 1). The table product_doc contains the date when the operation took
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