What is the exact difference between sql dynamic query and static query ?

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Hi in my new project we are using dynamic and static sql (inside procedure). but still i dont know what is the difference?
What is the use of Dynamic sql? Both case we are passing parameters from front end then why this dyanmic query ?
where is the use?

Posted 4-Feb-13 20:35pm

Am Gayathri

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Mehdi Gholam · Answer 1 · 2013-02-04T20:54:00

Static queries run within the security context of the calling code (stored procedure, function etc.), dynamic queries run with the users access permissions.

Dynamic queries are used when you don't know the exact sql, for example when you might change columns or where clauses etc. at runtime.