Which of the following holds correct while optimizing the query?

1) Use ((a AND D) AND c OR (((a AND D) AND (c AND d)))) instead of

(a AND D AND c) on (3 AND b AND c AND d)

2)Use b>5 AND b=c AND 825 instead of (a

3}Use (8>=5 AND 8:5) OR (8:6 AND 5:5) 0R (8:7 AND 5:6) instead of B=5 OR 8=6

Result of this query? SELECT lNSERT()

In MySQL 5.6.5. how many bytes are required to store the DATETIME data type?

Invalid year data type values are converted to which of the following?

Which operators are supported by boolean full-text search?

Result of the following two queries? 1. SELECT POW(2.2): 2. SELECT POWER(2.3):

How would you remove all rows from a table 'STAFF'

Given two tables, t1 and t2, the join condition 't1.t2_id = t2.id' how do you get rows from t1 that have NO counterparts in t2?

In a WAMP environment, what is the correct way to permanently change the largest possible packet that can be transmitted to or from a MySQL server?

Assume, you have a table inventory(id int, description text, price int). How can you change the type of price from int to decimal(10,2)?

Which are true concerning indexes?