Schreiben Sie die Reihenfolge der Ausführung aller SQL -Klauseln und -aussagen
Step 1: Getting Data (From, Join) FROM citizen. ...
Step 2: Row Filter (Where) After getting qualified rows, it is passed on to the Where clause. ...
Step 3: Grouping (Group by) ...
Step 4: Group Filter (Having) ...
Step 5: Return Expressions (Select) ...
Step 6: Order (Order by) and Paging (Limit / Offs
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