what is a join? : Sql dba
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What is clustered, non-clustured and unique index. How many indexes can be created on a table ?
How many types of primary keys are there?
Why is there a need for sqlcode and sqlerrm variables?
What is pl sql commands?
How do you create a db file?
how to delete duplicate rows from a join tables(I have three tables on that join) how do you know which join is need to be used? The select statement I have is: SELECT gc_skill_type.skill_type, gc_area_tec.area, gc_technology.technology, gc_technology.id_technology, gc_area_tec.id_area_tec FROM gc_skill_type, gc_area_tec, gc_technology WHERE gc_area_tec.id_skill_type (+) = gc_skill_type.id_skill_type AND gc_technology.id_area_tec (+) = gc_area_tec.id_area_tec order by gc_skill_type.skill_type asc, gc_area_tec.area asc, gc_technology.technology asc
What is null in pl/sql?
What is the difference between SQL Constraint and PL/SQL constraint.Pls give all the constraint name.
How pl/sql source code can be protected?
table structure: ---------------- col1 col2 ----- ----- 01-mar-2012 11:12:46 01-mar-2012 11:12:10 01-mar-2012 11:12:46 01-mar-2012 11:11:23 Write a query to display the result as shown below: col1 col2 ----- ----- 01-mar-2012 11:12:46 01-mar-2012 11:12:10
Which command is used to call a stored procedure?
What are the ddl commands?
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