The
Read full article from MySQL :: MySQL 5.0 Reference Manual :: 13.8.2 EXPLAIN Syntax
DESCRIBE
and EXPLAIN
statements are synonyms. In practice, the DESCRIBE
keyword is more often used to obtain information about table structure, whereas EXPLAIN
is used to obtain a query execution plan (that is, an explanation of how MySQL would execute a query).DESCRIBE City;
EXPLAIN EXTENDED
can be used to obtain additional execution plan informatioRead full article from MySQL :: MySQL 5.0 Reference Manual :: 13.8.2 EXPLAIN Syntax
No comments:
Post a Comment