<{p}>2.4. Because of the unevenly distributed data in the DEPARTMENT_ID column of the EMPLOYEES table of the HR schema of the PDBPROD1 database, you need to supply more information to the optimizer to allow for more efficient use of indexes. Regenerate statistics on the EMPLOYEES table to solve this problem.<{br/}><{/p}>
发布于 2021-02-26 18:42:24
【单选题】
A <{p}>会<{/p}>
B <{p}>不会<{/p}>
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