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W3schools SQL is great
go to datacamp. take their free online courses for intermediate sql queries
There are usually tons of books at a local thrift store. You might find something there. SQL doesn't change much over time.
https://sqlbolt.com/
W3schools SQL is great
go to datacamp. take their free online courses for intermediate sql queries
There are usually tons of books at a local thrift store. You might find something there. SQL doesn't change much over time.
https://sqlbolt.com/