I think it's not a bug. Before the cast function, the result has been recorded as 20000. So you are convering 20000 to text. I think you'd better rebuild the table, and change the column attribute to text.
I think it's not a bug. Before the cast function, the result has been recorded as 20000. So you are convering 20000 to text. I think you'd better rebuild the table, and change the column attribute to text.