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Ngày gia nhập: 13 thg 5, 2022
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Q: Creating a value column in a SQL Server (SSMS) There is a table in SQL Server 2008 R2 called Orders. In the Orders table are the following columns: ORDERS_ID, ORDERS_DATE, ENCOUNTERS_ID, ORDER_CODE, ORDER_NAME, ORDER_AMT, PALLET_CODE, PALLET_AMT, BILLED_AMT, COMMENTS I would like to add one column to it called "ORDER_VALUE" which will store a number which is a calculation of the AMT field and the PALLET_AMT. (Essentially it is a subtraction of the PALLET_AMT from the ORDER_AMT) If this is not possible I would appreciate your suggestions of how I can store a number (which represents the total of my invoices). Thanks in advance! A: It is possible. If you wish to store this in a new column: ALTER TABLE Orders ADD ORDER_VALUE INT If you wish to add a new column that is NOT stored in the DB and contains calculated values: DECLARE @Column NVARCHAR(1000) = N'ORDER_VALUE' CREATE TABLE #Columns(ColumnName VARCHAR(100), Value INT) INSERT INTO #Columns (ColumnName, Value) SELECT 'ORDER_VALUE', CASE WHEN ISNUMERIC(ORDER_AMT) = 1 AND ISNUMERIC(PALLET_AMT) = 1 THEN ORDER_AMT - PALLET_AMT ELSE 0 END FROM Orders SELECT @Column = ColumnName + CHAR(13) + ColumnName + CHAR(10) FROM #Columns DECLARE @String NVARCHAR(1000) SET @String = 'ALTER TABLE Orders ADD'+ @Column + CHAR(13) + CHAR(10) EXEC(@String




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Black Rooster Audio - Plugin Pack 2.3.2 (VST AAX) X86-x64 Setup Free 2022
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