How does index help in query performance?
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Can primary key be changed?
How do sql databases work?
write an sql query to get third maximum salary of an employee from a table named employee_table. : Sql dba
How do you concatenate in sql?
What is sql performance tuning?
what are the t string functions available in tsql? : Transact sql
Write a sql select query that only returns each name only once from a table?
Which data type doesn't allow null data type?
What is the use of pl/sql table?
If you have to declare procedure1,procedure2 in package specification and if you have to declare procedure1,procedure2 and procedure3 in package body? is it compilation or not and execute or not? what type of error is given please
What is sql stand for?
Is sql a backend language?