Sybase cursor fetch multiple columns

How to do nested cursor in sybase ase - Stack. Multiple row fetch with a cursor in T-SQL. It retrieves the data from the result set and stores the current position, allowing additional fetches until Adaptive Server reaches the end of the result set. However, this option does not affect a fetch containing an into clause.

The first row is placed in SQLDA variables to ( columns per row)- and so on. For a detailed example of using wide fetches , see Fetching more than one row at a time. The FETCH statement retrieves one row from the named cursor.

To access rows returned in a result set, you use the FETCH statement the same way you use it for cursors. If you open the cursor again, SAP ASE re-runs the query and places the cursor before the first row in the result set. The cursor is still set to return five rows with each fetch.

To remove the cursor , use: deallocate cursor newauthors_crsr. You cannot reuse a cursor name until you deallocate it. Sybase IQ supports inserts only on updatable cursors where all nonnullable, nonidentity columns are both selected and updatable. In Sybase IQ , COMMIT and ROLLBACK are not allowed inside an open updatable cursor , even if the cursor is opened as a hold cursor.

Sample stored procedure with a cursor. This procedure performs the same changes to the underlying table as the procedure written without a cursor , but it uses cursors instead of set-oriented programming. As each row is fetche examine and update a lock is held on the appropriate data page. In SAP Sybase IQ, COMMIT and ROLLBACK are not allowed inside an open updatable cursor , even if the cursor is opened as a hold cursor.

You use a cursor to retrieve rows from a query that has multiple rows in the result set. A cursor is a handle or an identifier for the SQL query result set and a position within that result set. For an introduction to cursors, see Working with cursors.

DYNAMIC SCROLL clause DYNAMIC SCROLL is the default cursor type. When using cursors there is always a trade-off between efficiency and consistency. May I ask how to properly do a nested cursor in sybase ? In sybase the cursors are declared at the top and still the nd cursor gets the value from first cursor.

But the way sybase code work surprise me. Cursor fetch with multiple rows. FROM sysobjects a, syscolumns b WHERE a. DECLARE table_name_ cursor CURSOR FOR SELECT a. It is possible to iterate over a table without using cursor.

This article shows an alternative to cursor in sybase. If a table has a clustered index defined on a column (or set of columns ) then the rows in that table are organized in a sorted order by the indexed columns. You can fetch rows one at a time, several at a time, or all at once. The data is stored in variables or fields that correspond to the columns selected by the query. File being asked to smile more?

The fetch count nnn can be a host variable. Kindly explain that how can I acheive this. Hi Everyone, I wanted to replace cursor with some select statement for multiple columns and multiple variables for speed issue.

Hi, Can anyone tell me, how can I declare a cursor in Sybase dynamically, within a procedure.