NAME

Alzabo::SQLMaker::MySQL - Alzabo SQL making class for MySQL

SYNOPSIS

use Alzabo::SQLMaker;

my $sql = Alzabo::SQLMaker->new( sql => 'MySQL' );

DESCRIPTION

This class implementes MySQL-specific SQL creation. MySQL does not allow subselects. Any attempt to use a subselect (by passing an Alzabo::SQMaker object in as parameter to a method) will result in an Alzabo::Exception::SQL error.

METHODS

Almost all of the functionality inherited from Alzabo::SQLMaker is used as is. The only overridden methods are limit() and get_limit(), as MySQL does allow for a LIMIT clause in its SQL.

EXPORTED SQL FUNCTIONS

SQL may be imported by name or by tags. They take arguments as documented in the MySQL documentation (version 3.23.39). The functions (organized by tag) are:

:math

PI
RAND
MOD
ROUND
POW
POWER
ATAN2
ABS
SIGN
FLOOR
CEILING
EXP
LOG
LOG10
SQRT
COS
SIN
TAN
ACOS
ASIN
ATAN
COT
DEGREES
RADIANS
TRUNCATE

:string

CHAR
POSITION
INSTR
LEFT
RIGHT
FIND_IN_SET
REPEAT
LEAST
GREATEST
CONCAT
ELT
FIELD
MAKE_SET
LOCATE
SUBSTRING
CONV
LPAD
RPAD
MID
SUBSTRING_INDEX
REPLACE
CONCAT_WS
EXPORT_SET
INSERT
ASCII
ORD
BIN
OCT
HEX
LENGTH
OCTET_LENGTH
CHAR_LENGTH
CHARACTER_LENGTH
TRIM
LTRIM
RTRIM
SOUNDEX
SPACE
REVERSE
LCASE
LOWER
UCASE
UPPER

:datetime

CURDATE
CURRENT_DATE
CURTIME
CURRENT_TIME
NOW
SYSDATE
CURRENT_TIMESTAMP
UNIX_TIMESTAMP
WEEK
PERIOD_ADD
PERIOD_DIFF
DATE_ADD
DATE_SUB
ADDDATE
SUBDATE
DATE_FORMAT
TIME_FORMAT
FROM_UNIXTIME
DAYOFWEEK
WEEKDAY
DAYOFYEAR
MONTH
DAYNAME
MONTHNAME
QUARTER
YEAR
YEARWEEK
HOUR
MINUTE
SECOND
TO_DAYS
FROM_DAYS
SEC_TO_TIME
TIME_TO_SEC

:aggregate

These are functions which operate on an aggregate set of values all at once.

COUNT
AVG
MIN
MAX
SUM
STD
STDDEV

:system

These are functions which return information about the MySQL server.

DATABASE
USER
SYSTEM_USER
SESSION_USER
VERSION
CONNECTION_ID
LAST_INSERT_ID
GET_LOCK
RELEASE_LOCK
BENCHMARK
MASTER_POS_WAIT

:control

These are flow control functions:

IFNULL
NULLIF
IF

:misc

These are functions which don't fit into any other categories.

ENCRYPT
ENCODE
DECODE
FORMAT
INET_NTOA
INET_ATON
BIT_OR
BIT_AND
PASSWORD
MD5
LOAD_FILE

:fulltext

These are functions related to MySQL's fulltext searching capabilities.

MATCH
AGAINST
IN_BOOLEAN_MODE

NOTE: In MySQL 4.0 and greater, it is possible to say that a search is in boolean mode in order to change how MySQL handles the argument given to AGAINST. This will not work with earlier versions.

:common

These are functions from other groups that are most commonly used.

NOW
COUNT
AVG
MIN
MAX
SUM
DISTINCT

AUTHOR

Dave Rolsky, <dave@urth.org>