Answer / Abhinav Srivastava

To obtain a list of indexes for an existing table in Oracle Database, you can use the following SQL query:n`DESCRIBE <table_name> ALL_INDXS`. This command will display details about all indexes on the specified table.

How many rows can sqlite handle?

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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.

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