What is fetch status?

What is fetch status?

@@Fetch_Status: It returns the last status of the fetch operation of the cursor which is currently opened and in use. We can say that the @@Fetch_Status function returns the status of a recent fetch operation of a cursor. It is used with a while loop.

What does cursor status mean?

An application uses the cursor status property to determine how a cancel operation has affected a cursor. CS_CUR_STATUS is a command structure property and cannot be retrieved at the connection or context levels. Cursor properties are useful to gateway applications that send cursor information to clients.

What is fetch in database?

The FETCH statement retrieves rows of data from the result set of a multiple-row query—one row at a time, several rows at a time, or all rows at once—and stores the data in variables, records, or collections.

What is fetch in cursor?

The FETCH statement advances the cursor to the first or next row in the set, and loads the values indicated in the SELECT clause of the DECLARE CURSOR statement into host language variables. The WHENEVER NOT FOUND statement specifies an action to be performed when the cursor moves past the last row.

What is fetch status in SQL?

@@FETCH_STATUS (Transact-SQL) This function returns the status of the last cursor FETCH statement issued against any cursor currently opened by the connection. Transact-SQL Syntax Conventions.

What are cursors in PostgreSQL?

A SQL cursor in PostgreSQL is a read-only pointer to a fully executed SELECT statement’s result set. Cursors are typically used within applications that maintain a persistent connection to the PostgreSQL backend.

What happens when a cursor is opened?

When a cursor is opened, the following things happen: The values of the bind variables are examined. Based on the values of the bind variables, the active set (the query result) is determined. The active set pointer is set to the first row.

What is fetch in SQL Server?

FETCH is an SQL command used along with ORDER BY clause with an OFFSET(Starting point) to retrieve or fetch selected rows sequentially using a cursor that moves and processes each row one at a time till the number of rows mentioned in the query are displayed. With FETCH the OFFSET clause is mandatory.

What is fetch in mysql?

The FETCH clause is used to return the number of records after the execution of the OFFSET clause. Fetch_rows_count can be specified by a constant, any scalar, variable, any parameter greater than or equal to zero. In an SQL query, it is necessary to use the OFFSET clause but the FETCH clause can be an optional term.

What is fetch next from?

If FETCH NEXT is the first fetch against a cursor, it returns the first row in the result set. NEXT is the default cursor fetch option. Returns the result row immediately preceding the current row, and decrements the current row to the row returned.

What is cursor in SQL Server?

A SQL cursor is a database object that retrieves data from result sets one row at a time. The cursor in SQL can be used when the data needs to be updated row by row. A SQL cursor is a database object that is used to retrieve data from a result set one row at a time.

Does PostgreSQL have stored procedures?

PostgreSQL allows you to extend the database functionality with user-defined functions by using various procedural languages, which are often referred to as stored procedures. With stored procedures you can create your own custom functions and reuse them in applications or as part of other database’s workflow.

What does the fetch _ status system function return?

@@FETCH_STATUS system function is used to find the most recent FETCH statement. You can use this function with while loop. @@FETCH_STATUS system function return 0 or 1. When it returns 0 it means the FETCH is successful and it is equal to zero.

What is the fetch status in SQL Server 2012?

The @@FETCH_STATUS system function returns three values in SQL Server 2012 which are explained below. When @@FETCH_STATUS system function returns 0 the FETCH is successful and it is equal to zero. When @@FETCH_STATUS system function returns -1 the FETCH was unsuccessful.

What does the fetch status on the cursor mean?

If there are still rows which can be fetched from the cursor, then @@FETCH_STATUS is 0, which shows SUCCESS. If @@FETCH_STATUS is <> 0 (-1 or -2) then it points that there are no more rows that can be returned from the cursor and you have reached its end. This is the usual condition used to break from a loop that is going over a cursor.

Which is the best definition of the word fetch?

Definition of fetch (Entry 2 of 3) 1 : trick, stratagem 2 : an act or instance of fetching 3a : the distance along open water or land over which the wind blows