Sql cursor simple example

For example , if one would like to handle the deployment of individual tables to another database one could use a cursor and sp_executeSql to run a chunk of T- SQL for each table in a give list. In the example below we will loop through the contents of a table and select the description of each ID we find. Declaring the cursor.

The name of this context area is same as the cursor name. It will make the cursor ready. Now we will discuss all these four parts one by one in details.

We use Cursor when we need to modify one row at a time returned by the select query. For an example , check out this Stack Overflow answer on converting a cursor to set-based operation. SQL Server Cursor retrive data in et to process one by one. A cursor is declared by defining the SQL statement that returns a result set.

We will explain different types of Cursors with simple examples. Previous post we have explained detailed about different types of cursors. In case you want to read the previous post – Oracle Cursor – Basics.

All examples are tested in Oracle 11g Release version.

I used the classic DEPT and EMP tables to illustrate the examples. To handle a result set inside a stored procedure, you use a cursor. A cursor allows you to iterate a set of rows returned by a query and process each row individually. Read-only: you cannot update data in the underlying table through the cursor.

MySQL cursor is read-only, non-scrollable and asensitive. Bewerber empfehlen Jobvector. SQL Server – Cursor Sql server can provide the complete result set using cursor that can be process one row at time.

Cursor used to retrieve data from tables and stores in variable for any modification. Cursor in sql server is used to retrieve set of data from table, loop through each record row by row, and modify the values based on requirements. Normally, the cursor is used when we need to process multiple rows of data. Sql server Cursor is a database objects to retrieve data from a result set one row at a time, instead of the T- SQL commands that operate on all the rows in the result set at one time.

We can use cursor when we need to update records in a database table row by row. In this article we will see how to use Sql Server Cusror with Example. Simple SQL Cursor Example. But this is more for my benefit, and maybe even yours.

Just a quick cursor example , so that I can easily reference the syntax if I ever need to. The above query updates the orderqty column to 1for a particular salesorderid.

When doing a cursor update the CURRENT OF keyword is used to update the current row. If a cursor definition has a query with multiple tables then only the table used in update statement is affected. The output of above query is shown below. Get Multiple Values in SQL Server Cursor. Ask Question Asked years, months ago.

Active year, months ago. Viewed 113k times 68. I have a cursor containing several columns from the row it brings back that I would like to process at once. DeutschlandsBesteJobportale.