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Explain Correlated Sub-queries? |
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Answer» CORRELATED sub-queries are those queries WHEREIN the nester QUERY on the inner SIDE refers directly back to outer query’s table. For each and every row that is qualified, the EVALUATION of correlated sub-query is a must. Correlated sub-queries are those queries wherein the nester query on the inner side refers directly back to outer query’s table. For each and every row that is qualified, the evaluation of correlated sub-query is a must. |
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