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You can loop through the table variable or you can cursor through it. This is what we usually call a RBAR - pronounced Reebar and means Row-By-Agonizing-Row. I would suggest finding a SET-BASED answer to your question (we can help with that) and move away from rbars as much as possible.
It's possible to use a cursor to do this: create function [dbo].f_teste_loop returns @tabela table ( cod int, nome varchar (10) ) as begin. insert into @tabela values (1, 'verde'); insert into @tabela values (2, 'amarelo'); insert into @tabela values (3, 'azul'); insert into @tabela values (4, 'branco');
Any query which works on any single record taken from a table can be wrapped in a procedure to make it run through each row of a table like so: First delete any existing procedure with the same name, and change the delimiter so your SQL doesn't try to run each line as you're trying to write the procedure.
31 paź 2023 · The idea is to loop trough the table rows ordered by the CursorTestID column and update the RunningTotal column with the sum of the CursorTestID column value and the value of the RunningTotal column of the previous row. But before starting, first we need to generate some test rows with the next Transact-SQL script.
4 mar 2022 · Solution. In this tutorial, we will look at examples of a WHILE loop in T-SQL and discuss alternatives like a CTE and cursor. SQL WHILE Loop Syntax. The syntax is like this: WHILE CONDITION. BEGIN. CODE . BREAK --Optional . CONTINUE --Optional . END . WHILE Loop Example.
29 sty 2024 · MySQL supports three kinds of loops: the LOOP, REPEAT, and WHILE loops, each serving different use cases. LOOP – A basic loop that continues execution until a LEAVE statement is encountered. REPEAT – Executes the statements repeatedly until a specified condition becomes true; in many ways, it is similar to a ‘do-while’ loop in other ...
2 maj 2024 · Example of a Basic Cursor to Loop through Table Rows in SQL Server. Example of a Basic While Loop to Cycle through Table Rows in SQL Server. The code samples in this tip are valuable to illustrate the differences between cursors in SQL Server and the While Loop.
