Contents
When to return data from a stored procedure?
When returned, the cursor position is set before the first row. For a forward-only cursor, if the cursor is positioned beyond the end of the last row when the procedure exits, an empty result set is returned to the calling batch, procedure, or trigger. Note. An empty result set is not the same as a null value.
When to return the current value of a parameter?
If you specify the OUTPUT keyword for a parameter in the procedure definition, the procedure can return the current value of the parameter to the calling program when the procedure exits.
What happens to an empty result set in SQL?
An empty result set is not the same as a null value. For a scrollable cursor, all the rows in the result set are returned to the calling batch, procedure, or trigger when the procedure exits. When returned, the cursor position is left at the position of the last fetch executed in the procedure.
Where is my _ SP _ name in syscomment.routines?
Mind that SYSCOMMENTS and INFORMATION_SCHEMA.ROUTINES have nvarchar (4000) columns. So if my_sp_name is used at position 3998, it won’t be found.
How to search for a value in a column?
The code below allows you to search for a value in all text data type columns such as (char, nchar, ntext, nvarchar, text and varchar). The stored procedure gets created in the master database so you can use it in any of your databases and it takes three parameters:
What is the value of a REF CURSOR in SQL?
A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database. In essence, a REF CURSOR is a pointer or a handle to a result set on the database.
How to run a stored procedure in SQL?
To run a stored procedure: 1 Run the application. A Form1 window appears. 2 In the Form1 window, enter the connection information, and click Connect. 3 In the DataGrid object, scroll horizontally to verify that the values in the last column, DEPARTMENT_ID are only 60. 4 Close the application.
When to use the cursor data type in Transact-SQL?
Using the Cursor Data Type in OUTPUT Parameters Transact-SQL procedures can use the cursor data type only for OUTPUT parameters. If the cursor data type is specified for a parameter, both the VARYING and OUTPUT keywords must be specified for that parameter in the procedure definition.
How can I modify a procedure in SQL?
Expand Stored Procedures, right-click the procedure to modify, and then click Modify. Modify the text of the stored procedure. To test the syntax, on the Query menu, click Parse. To save the modifications to the procedure definition, on the Query menu, click Execute.
How to change the text of a stored procedure?
In Object Explorer, connect to an instance of Database Engine and then expand that instance. Expand Databases, expand the database in which the procedure belongs, and then expand Programmability. Expand Stored Procedures, right-click the procedure to modify, and then click Modify. Modify the text of the stored procedure.
How to set the result of exec stored procedure to a?
By having the SP return a “recordset”, i.e. a table made of rows (records) and columns (fields). (This is done by having a SELECT statement towards the end of the SP, as show in the question snippet)
How to wrap a stored procedure in SQL?
If you really can’t touch your procedure, and must have this done in sql, then you’ll have to get funky. Make another stored procedure to wrap your original procedure.
Can a procedure be called from the database?
Because OUTPUT parameters must be bound before an application can execute a procedure, procedures with cursor OUTPUT parameters cannot be called from the database APIs. These procedures can be called from Transact-SQL batches, procedures, or triggers only when the cursor OUTPUT variable is assigned to a Transact-SQL local cursor variable.
Can a parameter be specified as only output?
A parameter can be specified as only OUTPUT but if the VARYING keyword is specified in the parameter declaration, the data type must be cursor and the OUTPUT keyword must also be specified. The cursor data type cannot be bound to application variables through the database APIs such as OLE DB, ODBC, ADO, and DB-Library.
What does it mean when statement executeupdate ( ) returns false?
When the method execute returns true, the method getResultSet is called to retrieve the ResultSet object. When execute returns false, the method getUpdateCount returns an int. If this number is greater than or equal to zero, it indicates the update count returned by the statement.
What happens if you do not specify output in a procedure?
If you specify OUTPUT for a parameter when you call a procedure and that parameter is not defined by using OUTPUT in the procedure definition, you get an error message. However, you can execute a procedure with output parameters and not specify OUTPUT when executing the procedure.