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Disadvantage of Correlated Queries

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Disadvantage of Correlated Queries

ramesh s

8yAsked Mar 10, 2018, 10:03 AM950

Hello All,

Please explain Correlated queries disadvantages.

Thanks,
Ramesh

1 Reply

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Manav Pandya8y ago
Accepted answer
Hello @Ramesh

"Correlated means SUB QUERY"

Personally im not feeling about any disadvantage of corelated queries

I think using recursive loops/queries and subqueries may reduce your performance

Disadvantage may be :

- Correlated queries may become slow compare to others

- Do not use subqueries inside IN() , in place of subquery you can try JOINS or EXIST , it works well

- Always prefer to use non-correlated queries instead correlated queries

Thats what i wanna say

Thanks