Question

I want to Update a Table. I am getting Table Name and Column Name as a XML DataSet from the Front End. I have written One Cursor for that. But it throws error. Below is my Cursor

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE [dbo].[PMT_Formstatus_Update_Test]
(
@XMLTableNames VARCHAR(MAX)
)
AS
BEGIN

DECLARE @docHandle INT, @ErrorMessage VARCHAR(200), @doc VARCHAR(200)
    SET @doc = '<?xml version="1.0" encoding="iso-8859-1" ?>'

    DECLARE @Names TABLE
(   
        TName VARCHAR(50),
    CName VARCHAR(50),
    IDField VARCHAR(50),
    FunctionID INT,
    ID INT,             
    StatusID INT
    )
    SET @XMLTableNames = @doc + @XMLTableNames          
EXEC sp_xml_preparedocument @docHandle OUTPUT,  @XMLTableNames
    INSERT INTO @Names
    SELECT * FROM 
        OPENXML(@docHandle,'NewDataSet/NameDetails',2)
            WITH
            (
                TName VARCHAR(50),
                CName VARCHAR(50),
                IDField VARCHAR(50),
                FunctionID INT,
                ID INT,
                StatusID INT
                            )

    DECLARE @FunctionID INT
DECLARE @StatusID INT
DECLARE @ID INT
    DECLARE @TableName VARCHAR(50)
    DECLARE @ColumnName VARCHAR(50)
DECLARE @IDField VARCHAR(50)

    DECLARE @getTables CURSOR
    SET @getTables = CURSOR FOR
    SELECT FunctionID, TName, CName, StatusID, IDField, ID FROM @Names
    OPEN @getTables
    FETCH NEXT
    FROM @getTables INTO @FunctionID, @TableName, @ColumnName, @StatusID, @IDField, @ID
    WHILE @@FETCH_STATUS = 0
    BEGIN
    UPDATE @TableName SET @ColumnName = 3 WHERE @IDField = @ID
        FETCH NEXT
    FROM @getTables INTO @FunctionID, @TableName, @ColumnName, @StatusID, @IDField, @ID
    END

    CLOSE @getTables
    DEALLOCATE @getTables
END

How to write Update Query in this case? Please I need all your suggestions…

Answer 1

You need to concatenate them as string then call EXEC('')

EXEC ('UPDATE TableName SET ColumnName1 = 3 WHERE ColumnName2= Value')