NAME

SQL::Maker - Yet another SQL builder

SYNOPSIS

    use SQL::Maker;

    my $builder = SQL::Maker->new(
        driver => 'SQLite', # or your favorite driver
    );

    # SELECT
    ($sql, @binds) = $builder->select($table, \@fields, \%where, \%opt);

    # INSERT
    ($sql, @binds) = $builder->insert($table, \%values);

    # DELETE
    ($sql, @binds) = $builder->delete($table, \%where);

    # UPDATE
    ($sql, @binds) = $builder->update($table, \%set, \%where);
    ($sql, @binds) = $builder->update($table, \@set, \%where);

DESCRIPTION

SQL::Maker is yet another SQL builder class. It is based on DBIx::Skinny's SQL generator.

METHODS

my $builder = SQL::Maker->new(%args);

Create new instance of SQL::Maker.

Attributes are following:

driver: Str

Driver name is required. The driver type is needed to create SQL string.

quote_char: Str

This is the character that a table or column name will be quoted with.

Default: auto detect from $driver.

name_sep: Str

This is the character that separates a table and column name.

Default: '.'

new_line: Str

This is the character that separates a part of statements.

Default: '\n'

my $select = $builder->new_select(%args|\%args);

Create new instance of SQL::Maker::Select from the settings from $builder.

This method returns instance of SQL::Maker::Select.

my ($sql, @binds) = $builder->select($table|\@tables, \@fields, \%where|\@where|$where, \%opt);

    my ($sql, @binds) = $builder->select('user', ['*'], {name => 'john'}, {order_by => 'user_id DESC'});
    # =>
    #   SELECT * FROM `user` WHERE (`name` = ?) ORDER BY user_id DESC
    #   ['john']

This method returns SQL string and bind variables for SELECT statement.

$table

\@tables

Table name for FROM clause in scalar or arrayref. You can specify the instance of SQL::Maker::Select for sub-query.

\@fields

This is a list for retrieving fields from database.

\%where

\@where

$where

where clause from hashref or arrayref via SQL::Maker::Condition, or SQL::Maker::Condition object.

\%opt

This is a options for SELECT statement

$opt->{prefix}

This is a prefix for SELECT statement.

For example, you can provide the 'SELECT SQL_CALC_FOUND_ROWS '. It's useful for MySQL.

Default Value: 'SELECT '

$opt->{limit}

This option makes 'LIMIT $n' clause.

$opt->{offset}

This option makes 'OFFSET $n' clause.

$opt->{order_by}

This option makes ORDER BY clause

You can write it as following forms:

    $builder->select(..., order_by => 'foo DESC, bar ASC');
    $builder->select(..., order_by => ['foo DESC', 'bar ASC']);
    $builder->select(..., order_by => {foo => 'DESC'});
    $builder->select(..., order_by => [{foo => 'DESC'}, {bar => 'ASC'}]);

$opt->{group_by}

This option makes GROUP BY clause

You can write it as following forms:

    $builder->select(..., group_by => 'foo DESC, bar ASC');
    $builder->select(..., group_by => ['foo DESC', 'bar ASC']);
    $builder->select(..., group_by => {foo => 'DESC'});
    $builder->select(..., group_by => [{foo => 'DESC'}, {bar => 'ASC'}]);

$opt->{having}

This option makes HAVING clause

$opt->{for_update}

This option makes 'FOR UPDATE" clause.

$opt->{joins}

This option makes 'JOIN' via SQL::Maker::Condition.

my ($sql, @binds) = $builder->insert($table, \%values|\@values);

    my ($sql, @binds) = $builder->insert(user => {name => 'john'});
    # =>
    #    INSERT INTO `user` (`name`) VALUES (?)
    #    ['john']

Generate INSERT query.

$table

Table name in scalar.

\%values

This is a values for INSERT statement.

my ($sql, @binds) = $builder->delete($table, \%where|\@where|$where);

    my ($sql, @binds) = $builder->delete($table, \%where);
    # =>
    #    DELETE FROM `user` WHERE (`name` = ?)
    #    ['john']

Generate DELETE query.

$table

Table name in scalar.

\%where

\@where

$where

where clause from hashref or arrayref via SQL::Maker::Condition, or SQL::Maker::Condition object.

my ($sql, @binds) = $builder->update($table, \%set|@set, \%where|\@where|$where);

Generate UPDATE query.

    my ($sql, @binds) = $builder->update('user', ['name' => 'john', email => 'john@example.com'], {user_id => 3});
    # =>
    #    'UPDATE `user` SET `name` = ?, `email` = ? WHERE (`user_id` = ?)'
    #    ['john','john@example.com',3]

$table

Table name in scalar.

\%set

Setting values.

\%where

\@where

$where

where clause from hashref or arrayref via SQL::Maker::Condition, or SQL::Maker::Condition object.

$builder->new_condition()

Create new SQL::Maker::Condition object from $builder settings.

my ($sql, @binds) = $builder->where(\%where)

my ($sql, @binds) = $builder->where(\@where)

my ($sql, @binds) = $builder->where(\@where)

Where clause from hashref or arrayref via SQL::Maker::Condition, or SQL::Maker::Condition object.

PLUGINS

SQL::Maker supports plugin system. Write the code like following.

    package My::SQL::Maker;
    use parent qw/SQL::Maker/;
    __PACKAGE__->load_plugin('InsertMulti');

FAQ

Why don't you use SQL::Abstract?

I need more extensible one.

So, this module contains SQL::Maker::Select, the extensible SELECT clause object.

AUTHOR

Tokuhiro Matsuno <tokuhirom AAJKLFJEF@ GMAIL COM>

SEE ALSO

SQL::Abstract

Whole code was taken from DBIx::Skinny by nekokak++.

LICENSE

Copyright (C) Tokuhiro Matsuno

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.