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NEW QUESTION 48
You must reclaim memory used by a prepared statement named prep. Which two achieve this?

A. DROP PREPARE prep;B. PREPARE prep FROM '';C. DEALLOCATE PREPARE prep?D. SET @a = ''; EXECUTE prep USING @a;E. DROP PROCEDURE prep;F. SET @prep = NULL;

Answer: E,F

 

NEW QUESTION 49
Examine the output:

Which explain command will obtain the output?

A. EXPLAIN PORMAT=JSONB. EXPLAIN PORMAT^TRADITIONALC. EXPLAIN ANALYZED. EXPLAIN PARTITIONSE. EXPLAIN FORMAT=TREE

Answer: A

 

NEW QUESTION 50
Examine these statements which execute successfully:

Now, examine this query:

What is the result?

A. It inserts a row with a warning.B. It fails with a warning.C. It inserts a row with no error or warning.D. It fails with an error.E. It inserts a row with an error.

Answer: C

 

NEW QUESTION 51
Examine this statement which has executed successfully:

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

Answer: C

 

NEW QUESTION 52
......


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