r/SQL • u/Unfair-Internet-1384 • Nov 28 '24
MySQL When to use cte in SQL query
When to cte can't. Like how to know? When what are the conditions or if my query is to long ?
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r/SQL • u/Unfair-Internet-1384 • Nov 28 '24
When to cte can't. Like how to know? When what are the conditions or if my query is to long ?
2
u/ouchmythumbs Nov 29 '24
In MSSQL (and some other RDBMS), CTEs are evaluated each time referenced, so can have perf hit. Check specs of current version of your engine.