What is the diff between Truncate table / delete <table name> purge

3 Answers   TCS,

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Explain the uses of control file.

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please explain database architecture..

1 Answers   Infosys,

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what are different types of keys in sql?

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Is time a data type in sql?

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How do I count duplicates in sql?

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Why select is used in sql?

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Is it possible to include an insert statement on the same table to which the trigger is assigned?

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What is case function?

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4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B On A.dept_id=B.dept_id And A.emp_id=B.emp-id;

1 Answers   Fintellix,

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what is the maximum length of a table name, database name, and fieldname in mysql? : Sql dba

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what is collation? : Sql dba

0 Answers  

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