how are rank and dense rank being alloted for column with same values over a particular column
how mysql optimizes distinct? : Sql dba
what is External tables? explain with examples
Can i use Commit inside the Trigger? Suppose i use commit what will be happy (it's complied /executed/work)
can i use global variables in stored procedure or function
what is the difference between trigger and constraint?
i have table T!. A B C D NULL 1 2 3 4 NULL 5 6 7 8 NULL 9 10 11 12 NULL. I WANT COUNT OF NULL VALUES IN TABLE. WRITE A QUERY.
If a cursor is open, how can we find in a pl/sql block?
what is 'mysqlshow'? : Sql dba
What is error ora-12154: tns:could not resolve the connect identifier specified?
Why cross join is used?
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
Can a table have no primary key?
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