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TOM在EXPERT ONE-ON-ONE ORACLE中说:
Also,static SQL, especially static SQL in PL/SQL, will execute much more efficiently than
dynamic SQL. Using static SQL, the PL/SQL engine can do in a single interpreted line of
code what might take five or six lines of interpreted code with dynamic SQL.
他说的就是PLSQL引擎的解释开销。SQL本身没什么差别。 |
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