The teacher taught single table query or simple query in class, but related query was not mentioned. How should I do it?
Multi-table query has two modes: connection-based and view-based, but no matter which mode it is, it needs to start with single-table query...
For more sql tutorials, you can check the sql manual, Thanks for asking
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Multi-table query has two modes: connection-based and view-based, but no matter which mode it is, it needs to start with single-table query...
For more sql tutorials, you can check the sql manual, Thanks for asking