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How can you fix a poorly performing query?

Answer Posted / Mithilesh Kumar

A poorly performing SQL query can be optimized through various techniques such as: 1) Indexing the columns used in JOIN, WHERE, GROUP BY or ORDER BY clauses; 2) Reducing the number of subqueries and using joins instead; 3) Removing unnecessary fields in the SELECT statement; 4) Optimizing the query by rewriting it to avoid full table scans; 5) Using stored procedures or prepared statements; 6) Monitoring database statistics and configuring the database server for optimal performance.

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Hi , any one can help me on the same,this is regarding the Informatica Function doc,i want to know how developer is will develop the mapping. pl forwar the any function doc .just for my references. svlc75@yahoo.co.in

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