How do I view a sql database?
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why we go for package? what are the advantages of using instead of seperate procuderes or functions
How to select the Nth maximum salary from Table Emp in Oracle SQL Plus ?
What are all the different normalizations?
What are records give examples?
why sql is used as interpreter frequently rather than a compile?
How to avoid using cursors? What to use instead of cursor and in what cases to do so?
What is user in sql?
what are all the common sql function? : Sql dba
What is the difference between between and in condition operators?
In what condition is it good to disable a trigger?
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 are the basic sql commands?