easy5 pts · first answer countssqlperformance

What EXPLAIN tells you

You put EXPLAIN in front of a slow SELECT in PostgreSQL. What do you get back?

A.The same rows, returned fasterB.A description of SQL syntax errors in the queryC.The plan the database chose, such as a sequential or index scan, with estimated costsD.A list of indexes the database would create automatically if you confirmed its suggestion

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