sql - NOT IN vs NOT EXISTS - Stack Overflow
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 …
How do I perform an IF...THEN in an SQL SELECT?
15, సెప్టెం 2008, · The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server.
sql - Copy data into another table - Stack Overflow
How to copy/append data from one table into another table with same schema in SQL Server? Edit: let's say there is a query select * into table1 from table2 where 1=1 which creates table1 wi...
sql - Concatenate text from multiple rows into a single text string ...
Consider a database table holding names, with three rows: Peter Paul Mary Is there an easy way to turn this into a single string of Peter, Paul, Mary?
sorting - SQL multiple column ordering - Stack Overflow
12, జన 2010, · How can I sort multiple columns in SQL and in different directions? For instance, 'column1' would be sorted descendingly and 'column2' ascendingly.
SQL to find the number of distinct values in a column
5, ఏప్రి 2019, · SQL to find the number of distinct values in a column Asked 17 years, 3 months ago Modified 2 years, 8 months ago Viewed 826k times
sql - What is the difference between JOIN and INNER JOIN
SELECT * FROM table INNER JOIN otherTable ON table.ID = otherTable.FK Is there any difference between the statements in performance or otherwise? Does it differ between different SQL …
SQL WHERE.. IN clause multiple columns - Stack Overflow
SELECT * FROM table1 WHERE (CM_PLAN_ID, Individual_ID) IN ( SELECT CM_PLAN_ID, Individual_ID FROM CRM_VCM_CURRENT_LEAD_STATUS WHERE Lead_Key = :_Lead_Key ) But …
How do I rename a column in a database table using SQL?
6, అక్టో 2008, · 155 If I wish to simply rename a column (not change its type or constraints, just its name) in an SQL database using SQL, how do I do that? Or is it not possible? This is for any …
sql - UPDATE from a SELECT - Stack Overflow
In SQL Server, it is possible to insert rows into a table with an INSERT.. SELECT statement: INSERT INTO Table (col1, col2, col3) SELECT col1, col2, col3 FROM other_table WHERE sql = …
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