What happens when the column is set to AUTO INCREMENT and if you reach maximum value in the table?
It stops incrementing. Any further inserts are going to produce an error, since the key has been used already.
What, if a table has one column defined as TIMESTAMP?
Timestamp field gets the current timestamp whenever the row gets altered.
What are federated tables?
Federated tables which allow access to the tables located on other databases on other servers.
What is the difference between MyISAM Static and MyISAM Dynamic?
In MyISAM static all the fields will have fixed width. The Dynamic MyISAM table will have fields like TEXT, BLOB, etc. to accommodate the data types with various lengths. MyISAM…
How do you control the max size of a HEAP table?
Maximum size of Heal table can be controlled by MySQL config variable called max_heap_table_size.
What does myisamchk do?
It compress the MyISAM tables, which reduces their disk or memory usage.
How do you login to MySql using Unix shell?
We can login through this command: # /bin/mysql -h hostname -u <UserName> -p <password>
What is the difference between primary key and candidate key?
Every row of a table is identified uniquely by primary key. There is only one primary key for a table. Primary Key is also a candidate key. By common convention,…
What does a TIMESTAMP do on UPDATE CURRENT_TIMESTAMP data type?
TIMESTAMP column is updated with Zero when the table is created. UPDATE CURRENT_TIMESTAMP modifier updates the timestamp field to current time whenever there is a change in other fields of the table.
What are the drivers in MySQL?
Following are the drivers available in MySQL: PHP Driver JDBCÂ Driver ODBC Driver C WRAPPER PYTHON Driver PERL Driver RUBY Driver CAP11PHP Driver Ado.net5.mxj