单选题Examine the command:  SQL DBMS_STATS.SET_TABLE_PREFS(’SH’, ’CUSTOMERS’, ’PUBLISH’, ’false’); Which statement describes the effect of the above command()AAutomatic statistics collection is stopped for the CUSTOMERS table.BStatistics for the CUSTOMERS table are locked and cannot be overwritten.CExisting statistics for the CUSTOMERS table become unusable for the query optimizer.DSubsequently, statistics gathered on the CUSTOMERS table are stored as pending statistics.

单选题
Examine the command:  SQL> DBMS_STATS.SET_TABLE_PREFS(’SH’, ’CUSTOMERS’, ’PUBLISH’, ’false’); Which statement describes the effect of the above command()
A

Automatic statistics collection is stopped for the CUSTOMERS table.

B

Statistics for the CUSTOMERS table are locked and cannot be overwritten.

C

Existing statistics for the CUSTOMERS table become unusable for the query optimizer.

D

Subsequently, statistics gathered on the CUSTOMERS table are stored as pending statistics.


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