What do you mean by query optimization?
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in table there r so many rows write a query which two rows r updated last two day befor?
What is cascade in sql?
what are the join types in tsql? : Transact sql
Write a sql query to find the names of employees that begin with ‘a’?
How is data stored in sql?
Which is better join or inner query?
What is linq to sql?
What is the difference between in and between in sql?
What is pl sql commands?
How do you get all records from 2 tables. Which join do you use?
What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNION statement eliminates duplicate rows; a UNION ALL statement includes duplicate rows. 2. A UNION statement can be used to combine any number of queries; a UNION ALL statement can be used to combine a maximum of two queries. 3. A UNION statement can only combine queries that have parallel fields in the SELECT list; a UNION ALL statement can combine queries with differing SELECT list structures. 4. A UNION statement cannot be used with aggregate functions; a UNION ALL statement can be used with aggregate functions. 5. There is no difference between the two statements; they are interchangeable.
What do you mean by rowid?
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