What is count * in sql?
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What are %type and %rowtype for?
Can we update views in sql?
Can a foreign key be null?
When the mutating error will comes? and how it will be resolved?
How many postgresql users are there, worldwide?
Difference between DBMS and RDBMS...CODD's rules
Sql technical questions
what are all types of user defined functions? : Sql dba
What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.
How do I start sql from command line?
Is sqlexception checked or unchecked?
What is the purpose of the sql select top clause?
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