Answer Posted / pratik singh jageera

The placement of drop keep and rename statement does not affect its execution order.The order is fixed in the order
DROP-KEEP-RENAME.Even if you put a rename statement(rename old_var=new_var;) before a drop statement.The drop statement will look for old_var as it is executed prior to rename statement.
Length can be the answer as its placement is very important.Changing the length value of a variable after the set statement will not carry out the necessary change.It has to be done before set statement.

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