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Good point, and a good reason to learn how your DBMS of choice does common operations. Most query planners will explicitly tell you what yours is doing. I remem
by bitexploder 8y ago
Good point, and a good reason to learn how your DBMS of choice does common operations. Most query planners will explicitly tell you what yours is doing. I remember even back a long time ago MSSQL 7 had a nice GUI for its "query explain" and pgAdmin also gives a really nice graphical view of query plans, which really helps visualize when it is looping, doing hash lookups, etc. I suppose that would be part of the recommendation for learning: use a graphical query plan view if you can find a client that supports it :)
http://www.postgresonline.com/journal/archives/27-Reading-PgAdmin-Graphical-Explain-Plans.html http://www.postgresonline.com/journal/archives/27-Reading-Pg... (example pictures if anyone reading this hasn't seen it before), it is pretty cool.