Your database manual should cover something about performance. It really depends on the database you are using. My suggestion is too google for posts or videos about "query optimization for + your_db".
If you are using a proprietary database ask the vendor, they should have some specific documentation about it, then start asking questions.
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Your database manual should cover something about performance. It really depends on the database you are using. My suggestion is too google for posts or videos about "query optimization for + your_db".
If you are using a proprietary database ask the vendor, they should have some specific documentation about it, then start asking questions.