使用帶動態參數的sp_executesql

Question

CREATE PROCEDURE GetUserDetails 
(
    @ParameterListWithDataType VARCHAR(MAX), 
    @ParameterNameList  VARCHAR(MAX), 
    @ParameterValues  VARCHAR(MAX), 
    @WhereCondition  VARCHAR(MAX) 
) 
AS 
BEGIN 
    DECLARE @sql NVARCHAR(4000) 
    SET @sql = ' SELECT FirstName, MiddleName, LastName, Address, Salary FROM UserDetails WHERE ' + @WhereCondition 

    EXEC sp_executesql @sql, @ParameterListWithDataType, @ParameterNameList 
END 

EXEC GetUserDetails @ParameterListWithDataType = '@FirstName VARCHAR(100)', @ParameterNameList = '@FirstName', @ParameterValues = 'ABC', @WhereCondition = 'FirstName = @FirstName ' 

EXEC GetUserDetails @ParameterListWithDataType = '@FirstName VARCHAR(100), @LastName VARCHAR(100)', @ParameterNameList = '@FirstName,@LastName', @ParameterValues = '''ABC'', ''XYZ''', @WhereCondition = 'FirstName = @FirstName OR LastName = @LastName' 

EXEC GetUserDetails @ParameterListWithDataType = '@FirstName VARCHAR(100), @LastName VARCHAR(100), @MiddleName VARCHAR(100)', @ParameterNameList = '@FirstName,@LastName,@MiddleName', @ParameterValues = '''ABC'', ''XYZ'', ''DEF''', @WhereCondition = 'FirstName = @FirstName OR LastName = @LastName OR MiddleName = @MiddleName' 

是否有任何方法可以做到這一點？因爲搜索條件將是動態的。請給出您的評論或給我使用sp_executesql動態數量的參數的替代解決方案。

在此先感謝。

Answer 1

希望這個查詢可以幫助你。

CREATE PROCEDURE GetUserDetails 
(
    @FirstName VARCHAR(MAX), 
    @LastName  VARCHAR(MAX), 
    @MiddleName  VARCHAR(MAX) 
) 
AS 
BEGIN 
    DECLARE @sql NVARCHAR(4000) 
    DECLARE @WhereCondition VARCHAR(MAX) 

    SET @WhereCondition = ' WHERE 1 = 1'+case when @FirstName is null then '' else ' or FirstName = '+ @FirstName end+ 
          case when @LastName is null then '' else ' or LastName = '+ @LastName end+ 
          case when @MiddleName is null then '' else ' or MiddleName = '+ @MiddleName 
          end 

    SET @sql = ' SELECT FirstName, MiddleName, LastName, Address, Salary FROM UserDetails' + @WhereCondition 

    EXECUTE(@sql) 

END 

簡單的執行使用

EXEC GetUserDetails 'ABC','XYZ','DEF'