Why is there a performance difference between two similar queries where one uses union and the other uses union all?
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please bar with my english i having a database called tblhallreservation in which res_date is date field has to select all the fields in table deponding on month either has to display all details for the month jan or feb and so on
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statement (of account) Receive ID_receive Date_receive Amount_receive TO_receive From_receive Description_receive 1 2010/01/01 500 Bank Ahmed Payment from the account 2 2010/02/01 700 Bank Ahmed Payment from the account Payment ID_payment Date_payment Amount_payment From_payment To_payment Description_payment 1 2010/03/01 1000 Ahmed Sales Sale goods 2 2010/04/01 1500 Ahmed Sales Sale goods How can crate Stored Procedures for the statement (of account) from these tables? I want statement (of account) like this: (in sql 2005) ID_ name description debit account credit account balance
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