What is the most common use of the mysql EXPLAIN statement?

Is there any function in MySQL that allows for replace through a regular expression?

How can the following error be solved in MySQL? ERROR 1153: Got a packet bigger than 'max_allowed_packet' bytes

Which is not a valid Bit operator?

Which is correct in regards to the syntax of the code below? SELECT table1.this, table2.that, table2.somethingelse FROM table1 INNER JOIN table2 ON table1.foreignkey = table2.primarykey WHERE (some other conditions)

Consider the following Table EMP: ------ empId empName empSalary empJoinDate Which SQL is incorrect for finding out the count of records on EMP table where empJoinDate is between 2012-10-01 and 2012-12-30?

Which datatype is used to store binary data in MySQL?

How to return a JSON representation of a MySQL query?

Is it possible to use group by clause to concatenate strings?

How can a InnoDB database be backed up without locking the tables?

Consider the following tables: Books ------ BookId BookName AuthorId SubjectId PopularityRating (the popularity of the book on a scale of 1 to 10) Language (such as French, English, German etc) Subjects --------- SubjectId Subject (such as History, Geography, Mathematics etc) Authors -------- AuthorId AuthorName Country Which query will determine how many books have a popularity rating of more than 7 on each subject?