MYSQL Limit and Offset
Limit and Offset relationship
Considering the following users table:
id username
1 User1
2 User2
3 User3
4 User4
5 User5
In order to constrain the number of rows in the result set of a SELECT query, the LIMIT clause can be used together with one or two positive integers as arguments (zero included).
LIMIT clause with one argument
When one argument is used, the result set will only be constrained to the number specified in the following manner:
SELECT * FROM users ORDER BY id ASC LIMIT 2id username
1 User1
2 User2
If the argument's value is 0, the result set will be empty.
Also notice that the ORDER BY clause may be important in order to specify the first rows of the result set that will be presented (when ordering by another column).
LIMITclause with two arguments
When two arguments are used in a LIMIT clause:
.the first argument represents the row from which the result set rows will be presented – this number is
often mentioned as an offset, since it represents the row previous to the initial row of the constrained result
set. This allows the argument to receive 0 as value and thus taking into consideration the first row of the nonconstrained result set.
.the second argument specifies the maximum number of rows to be returned in the result set (similarly to
the one argument's example).
Therefore the query:
SELECT * FROM users ORDER BY id ASC LIMIT 2, 3Presents the following result set:
id username
3 User3
4 User4
5 User5