There is a LIMIT ROWS EXAMINED optimization which provides the
means to terminate the execution of SELECT statements which examine too
many rows, and thus use too many resources. See LIMIT ROWS EXAMIN
if the query planning is such that use of t1_index1 doesn't allow to use MRR, it won't be used.
The optimizer may also consider using t1_index2 and pick that over using t1_index1.
In such cases the hi
The FOR UPDATE clause of SELECT applies only when autocommit is set to 0 or the SELECT is enclosed in a transaction. A lock is acquired on the rows, and other transactions are prevented from writing t
You can see which character sets are available in a particular version by running the SHOW CHARACTER SET statement or by querying the Information Schema CHARACTER_SETS Table
HTML ASCII Characters
Several HTML ASCII characters can be created in our documentation with Creole Wiki by using the macro. Just type the entity name, without the
The ITERATE statement would cause the loop to repeat while total_value is less than 450. Once total_value is greater than or equal to 450, the LEAVE statement would terminate the LOOP
This INSERT example would result in two records being inserted into the sites table. The first record would have a site_id of 1 and a site_name of 'TechOnTheNet.com'. The second record would have a si