Can we optimise While Loop in sql server for large number of data? Can we pass parameters to the trigger?(Beginner) Can we RAISERROR inside MERGE Statement Can we select Bottom 1000 rows of a database Table from SSMS 2008 R2? Can we set value in a variable inside a select statement ca...
While SQL is inherently a declarative language, meaning it focuses on what data to retrieve, rather than how to retrieve it, there are scenarios where we might need to perform iterative operations. SQL provides a few methods to help us loop through records in database management systems likeMyS...
Now, let us convert the above example toWHILE loop. To convert a cursor to while loop, first you have to find the total number of rows in the table. Then you have to iterate through the table rows using WHILE control-of-flow element till the total row count is reached. Here is how ...
This post demonstrates the process to use the exit statement to terminate a loop in PostgreSQL. PL/pgSQL Exit Statement: How to Terminate a Loop The EXIT statement can be used to terminate the body of the loop before the actual ending of the loop by providing some conditions to this statem...
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Hi and welcome to the forums. You have a lot more issues with this stored proc than just a while loop. I can only imagine how slow this must run. Let's take a look at the problem areas one at a time. First we have a split function. It appears to be a table valued ...
)--Insert your required data in the variable of type TABLEINSERTINTO@myTableSELECTColumn1, Column2FROM[dbo].[YOUR_DATABASE_TABLE]--Initialize the @max variable. We'll use thie variable in the next WHILE loop.SELECT@max=COUNT(ID)FROM@myTable--LoopWHILE@counter<=@maxBEGIN--Do whatever you...
I generally recommend using Parameters but it is also possible to put all of your action queries in a single statement:prettyprint 复制 Public Sub CreateCommand(ByVal connectionString As String) Using connection As New SqlConnection(connectionString) Dim query As String = "INSERT INTO tbl_...
I was wondering if someone could point in me in the right direction of achieving this via set processing and not having to loop through every line. I’ve included the function below and some test data. Thanks in advance. --Create the function we will call in order to do the replace ...
sys_guid () is not nulladds a unique bit of data to each row. This prevents cycles because Oracle Database uses all the columns withprioroperators in theconnect byto check for loops. If two rows in a tree have the same value for these columns, the database considers this a loop. ...