14 avr. 2011 · 11 In SQL, anything you evaluate / compute with NULL results into UNKNOWN This is why SELECT * FROM MyTable WHERE MyColumn != NULL or SELECT * FROM MyTable …

Which of these queries is the faster? NOT EXISTS: SELECT ProductID, ProductName FROM Northwind..Products p WHERE NOT EXISTS ( SELECT 1 FROM Northwind..[Order Details] od …

14 févr. 2019 · sql sql-server t-sql sql-server-2000 edited May 30, 2020 at 23:24 Braiam 4,494 11 50 83

We all know that to select all columns from a table, we can use SELECT * FROM tableA Is there a way to exclude column(s) from a table without specifying all the columns? SELECT * [except …

Muhd 25.8k 22 66 79 2 possible duplicate of sql update query with data from another table – p.campbell Aug 11, 2011 at 18:07 2

17 In MS SQL Server Database, use this query to get the tables and respective column names that contains the input text:

7 avr. 2025 · I'm trying to set a variable from a SQL query: declare @ModelID uniqueidentifer Select @ModelID = select modelid from models where areaid = 'South Coast' Obviously I'm not …

Ran into a similar issue while restoring the database using SQL server management studio and it got stuck into restoring mode. After several hours of issue tracking, the following query worked …

10 To delete the duplicate rows from the table in SQL Server, you follow these steps: Find duplicate rows using GROUP BY clause or ROW_NUMBER () function. Use DELETE statement to …

Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As an …