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Download MySQL 8.0 Database Developer Exam Dumps

NEW QUESTION 40
Examine these my.cnf settings:

Examine this entry from /data/slow.log

Which option is also set in my.cnf?

• A. log_queries_not_using_indexes
• B. log_throttle_queries_not_using_indexes=100
• C. log__slow_admin_statements=1
• D. log_queries_not_using_indexes=ON

Answer: C

NEW QUESTION 41
Which two statements are true about AUTO_INCREMENT?

• A. A table can have multiple AUTO_INCREMENT columns.
• B. An AUTO_INCREMENT column must be indexed.
• C. The decimal data type supports AUTO_INCREMENT.
• D. AUTO_INCREMENT values allocated to a transaction that is rolled back are not reused.
• E. A server restart always resets the AUTO_INCREMENT value to largest value in the AUTO_INCREMENT column plus 1.

Answer: C,E

NEW QUESTION 42
Examine this statement which has executed successfully:

• A. Execution performance can be improved by adding an index on column description.
• B. No index will improve statement performance.
• C. Execution performance can be improved by using like instead of RLIKE.
• D. Execution performance can be improved by, using a composite index with column description as the leftmost prefix column description.
• E. The statement takes advantage of index description_idx.

Answer: D

NEW QUESTION 43
Examine these statements:
SET collation_connection=utf8mb4_0900_as_cs;
SELECT STRCMPCAlice', UCASE ('Alice* )) ;
What is displayed?

• A. 0
• B. 1
• C. 2
• D. NULL
• E. ERROR: 1267 (HYOOO): Illegal mix of collations

Answer: D

NEW QUESTION 44
......

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