![]() ![]() SELECT * FROM dbo.fn_SplitStr( 'a,b,c', default ) INSERT INTO Value ) VALUES( substring( + 1, - 1 ) )Ī sample usage of this user-defined function (UDF) follows. RETURNS TABLE( Position smallint IDENTITY NOT NULL, Value varchar( 8000 ) NOT NULL ) The table-valued function that performs this operation follows: IF objectproperty( object_id( 'fn_SplitStr' ), 'IsTableFunction' ) = 1ĬREATE FUNCTION fn_SplitStr varchar( 8000 ) varchar( 5 ) = ',' This lets Terry normalize the string into a set of values. The comma-separated string of attribute values can be parsed into individual values by using a table-valued function. This query can be generalized as following: SELECT a.Id ![]() Terry can also use a query like the following to do the same: SELECT a.Id This double-negative approach gives only the matching IDs that have all values searched for. The query checks that there are no values being searched for which are also not present in the table. To retrieve the IDs based on two attribute values, A and C, Terry can use the following query: SELECT DISTINCT a1.Id This lets the stored procedure process any number of attribute values as specified by the Web page. Terry can define the stored procedure with a varchar data type parameter, he uses to pass a list of attribute values as a comma-separated string to the stored procedure. Similarly, specifying B should return 1 and 2. Using the sample data shown earlier, specifying A and C as attribute values should return 1 and 3. The stored procedure also has to retrieve the ID only if all the specified attributes are configured for the ID value. For simplicity, assume that the length of all the values will be less than 8000. The stored procedure has to handle any number of attributes. Help Terry define the stored procedure with the required parameters. The Web page needs to pass a list of attributes and get the corresponding objects’ ID value. Terry is designing a stored procedure that the Web page will call to manage the user-defined attributes. The following script creates sample data for the table. The column ID in the AttribVals table represents generic objects in the dashboard application. #B project halloween codeThe following code shows the table’s schema including the relevant columns to store the attribute values for various objects in the system. As part of one administrative function in the dashboard, the application requires the database to store user-defined attributes. The data for the dashboard is stored in a SQL Server 2000 database. ![]() Terry, a systems analyst for the IT department, is developing a Web-based management dashboard. Here’s a recap of the problem and the solution to the December Reader Challenge. Dan won first prize of $100 for the best solution to the December Reader Challenge, "A Dashboard Application." Anith won second prize of $50. Congratulations to Dan Barrett and Anith Sen, an independent database consultant in Cordova, Tennessee. ![]()
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