What is secondary key?
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What is the purpose of cursors in pl/sql?
explain advantages of innodb over myisam. : Sql dba
What is the least restrictive isolation level? : Transact sql
Can we have two clustered index on a table?
Which sql statement is used to delete data from a database?
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SELECT category, type, AVG(price) FROM products GROUP BY category, type ORDER BY 1, 2 If there are three distinct categories in the "products" table, and each one has five different types, how many rows are returned by the query above? 1. 1 row 2. 3 rows 3. 5 rows 4. 8 rows 5. 15 rows
what is query cache in mysql? : Sql dba
How to convert lowercase letters to uppercase and uppercase letters to lowercase in a string. (ex, AbcdEfG should convert as aBCDeFg)
When are we going to use truncate and delete?
How to access the current value and next value from a sequence?
How many null values can be inserted in a coulmn whihc is unique constraint
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