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Select the correct answerWhich one is not a type of subquery ?OptionsCorrelated Sub queryMultiple row sub querySingle row sub queryVariation based Sub query

Question

Select the correct answerWhich one is not a type of subquery ?OptionsCorrelated Sub queryMultiple row sub querySingle row sub queryVariation based Sub query

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Solution

To answer the question, we need to identify which option is not a type of subquery.

  1. Correlated Subquery: This type of subquery is used when the inner query depends on the outer query. It is executed for each row of the outer query.

  2. Multiple Row Subquery: This type of subquery returns multiple rows of data and is used with operators like IN, ANY, or ALL.

  3. Single Row Subquery: This type of subquery returns a single row of data and is used with operators like =, >, <, etc.

  4. Variation Based Subquery: This option is not a recognized type of subquery. Therefore, the correct answer is "Variation based Subquery".

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Which of the following statements is true regarding subqueries in SQL?Answer choicesSelect an optionSubqueries can only return a single value.Subqueries cannot be used in the SELECT clause.Subqueries can be used in the SELECT, WHERE, and FROM clauses.Subqueries must always use the JOIN clause to relate to the outer query.

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