Yuji Shimada > SQL-Format-0.15 > SQL::Format

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Module Version: 0.15   Source  

NAME ^

SQL::Format - Yet another yet another SQL builder

SYNOPSIS ^

  use SQL::Format;

  my ($stmt, @bind) = sqlf 'SELECT %c FROM %t WHERE %w' => (
      [qw/bar baz/], # %c
      'foo',         # %t
      {
          hoge => 'fuga',
          piyo => [qw/100 200 300/],
      },             # %w
  );
  # $stmt: SELECT `bar`, `baz` FROM `foo` WHERE (`hoge` = ?) AND (`piyo` IN (?, ?, ?))
  # @bind: ('fuga', 100, 200, 300);

  ($stmt, @bind) = sqlf 'SELECT %c FROM %t WHERE %w %o' => (
      '*',                # %c
      'foo',              # %t
      { hoge => 'fuga' }, # w
      {
          order_by => { bar => 'DESC' },
          limit    => 100,
          offset   => 10,
      },                  # %o
  );
  # $stmt: SELECT * FROM `foo` WHERE (`hoge` = ?) ORDER BY `bar` DESC LIMIT 100 OFFSET 10
  # @bind: (`fuga`)

  ($stmt, @bind) = sqlf 'UPDATE %t SET %s' => (
      foo => { bar => 'baz', 'hoge => 'fuga' },
  );
  # $stmt: UPDATE `foo` SET `bar` = ?, `hoge` = ?
  # @bind: ('baz', 'fuga')

  my $sqlf = SQL::Format->new(
      quote_char    => '',        # do not quote
      limit_dialect => 'LimitXY', # mysql style limit-offset
  );
  ($stmt, @bind) = $sqlf->select(foo => [qw/bar baz/], {
      hoge => 'fuga',
  }, {
      order_by => 'bar',
      limit    => 100,
      offset   => 10,
  });
  # $stmt: SELECT bar, baz FROM foo WHERE (hoge = ?) ORDER BY bar LIMIT 10, 100
  # @bind: ('fuga')

  ($stmt, @bind) = $sqlf->insert(foo => { bar => 'baz', hoge => 'fuga' });
  # $stmt: INSERT INTO foo (bar, hoge) VALUES (?, ?)
  # @bind: ('baz', 'fuga')

  ($stmt, @bind) = $sqlf->update(foo => { bar => 'xxx' }, { hoge => 'fuga' });
  # $stmt: UPDATE foo SET bar = ? WHERE hoge = ?
  # @bind: ('xxx', 'fuga')

  ($stmt, @bind) = $sqlf->delete(foo => { hoge => 'fuga' });
  # $stmt: DELETE FROM foo WHERE (hoge = ?)
  # @bind: ('fuga')

DESCRIPTION ^

SQL::Format is a easy to SQL query building library.

THIS MODULE IS ALPHA LEVEL INTERFACE!!

FUNCTIONS ^

sqlf($format, @args)

Generate SQL from formatted output conversion.

  my ($stmt, @bind) = sqlf 'SELECT %c FROM %t WHERE %w' => (
      [qw/bar baz/],   # %c
      'foo',           # %t
      {
          hoge => 'fuga',
          piyo => [100, 200, 300],
      },               # %w
  );
  # $stmt: SELECT `foo` FROM `bar`, `baz WHERE (`hoge` = ?) AND (`piyo` IN (?, ?, ?))
  # @bind: ('fuga', 100, 200, 300)

Currently implemented formatters are:

%t

This format is a table name.

  ($stmt, @bind) = sqlf '%t', 'table_name';        # $stmt => `table_name`
  ($stmt, @bind) = sqlf '%t', [qw/tableA tableB/]; # $stmt => `tableA`, `tableB`
  ($stmt, @bind) = sqlf '%t', { tableA => 't1' };  # $stmt => `tableA` `t1`
  ($stmt, @bind) = sqlf '%t', {
      tableA => {
          index => { type => 'force', keys => [qw/key1 key2/] },
          alias => 't1',
  }; # $stmt: `tableA` `t1` FORCE INDEX (`key1`, `key2`)
%c

This format is a column name.

  ($stmt, @bind) = sqlf '%c', 'column_name';       # $stmt => `column_name`
  ($stmt, @bind) = sqlf '%c', [qw/colA colB/];     # $stmt => `colA`, `colB`
  ($stmt, @bind) = sqlf '%c', '*';                 # $stmt => *
  ($stmt, @bind) = sqlf '%c', [\'COUNT(*)', colC]; # $stmt => COUNT(*), `colC`
%w

This format is a where clause.

  ($stmt, @bind) = sqlf '%w', { foo => 'bar' };
  # $stmt: (`foo` = ?)
  # @bind: ("bar")

  ($stmt, @bind) = sqlf '%w', {
      foo => 'bar',
      baz => [qw/100 200 300/],
  };
  # $stmt: (`baz` IN (?, ?, ?) AND (`foo` = ?)
  # @bind: (100, 200, 300, 'bar')
%o

This format is a options. Currently specified are:

limit

This option makes LIMIT $n clause.

  ($stmt, @bind) = sqlf '%o', { limit => 100 }; # $stmt => LIMIT 100
offset

This option makes OFFSET $n clause. You must be specified both limit option.

  ($stmt, @bind) = sqlf '%o', { limit => 100, offset => 20 }; # $stmt => LIMIT 100 OFFSET 20

You can change limit dialects from $SQL::Format::LIMIT_DIALECT.

order_by

This option makes ORDER BY clause.

  ($stmt, @bind) = sqlf '%o', { order_by => 'foo' };                       # $stmt => ORDER BY `foo`
  ($stmt, @bind) = sqlf '%o', { order_by => { foo => 'DESC' } };           # $stmt => ORDER BY `foo` DESC
  ($stmt, @bind) = sqlf '%o', { order_by => ['foo', { -asc => 'bar' } ] }; # $stmt => ORDER BY `foo`, `bar` ASC
group_by

This option makes GROUP BY clause. Argument value some as order_by option.

  ($stmt, @bind) = sqlf '%o', { group_by => { foo => 'DESC' } }; # $stmt => GROUP BY `foo` DESC
having

This option makes HAVING clause. Argument value some as where clause.

  ($stmt, @bind) = sqlf '%o', { having => { foo => 'bar' } };
  # $stmt: HAVING (`foo` = ?)
  # @bind: ('bar')
%j

This format is join clause.

  ($stmt, @bind) = sqlf '%j', { table => 'bar', condition => 'foo.id = bar.id' };
  # $stmt: INNER JOIN `bar` ON (foo.id = bar.id)

  ($stmt, @bind) = sqlf '%j', {
      type      => 'left',
      table     => { bar => 'b' },
      condition => {
          'f.id'         => 'b.id',
          'f.updated_at' => \['UNIX_TIMESTAMP()', '2012-12-12']
          'f.created_at' => { '>' => 'b.created_at' },
      },
  };
  # $stmt: LEFT JOIN `bar` `b` ON (`f`.`id` = `b.id`)
%s

This format is set clause.

  ($stmt, @bind) = sqlf '%s', { bar => 'baz' };
  # $stmt: `bar` = ?
  # @bind: ('baz')

  ($stmt, @bind) = sqlf '%s', { bar => 'baz', 'hoge' => \'UNIX_TIMESTAMP()' };
  # $stmt: `bar` = ?, `hoge` = UNIX_TIMESTAMP()
  # @bind: ('baz')

  ($stmt, @bind) = sqlf '%s', {
      bar  => 'baz',
      hoge => \['CONCAT(?, ?)', 'ya', 'ppo'],
  };
  # $stmt: `bar` = ?, `hoge` = CONCAT(?, ?)
  # @bind: ('baz', 'ya', 'ppo')

For more examples, see also SQL::Format::Spec.

You can change the behavior by changing the global variable.

$SQL::Format::QUOTE_CHAR : Str

This is a quote character for table or column name.

Default value is "`".

$SQL::Format::NAME_SEP : Str

This is a separate character for table or column name.

Default value is ".".

$SQL::Format::DELIMITER Str

This is a delimiter for between columns.

Default value is ", ".

$SQL::Format::LIMIT_DIALECT : Str

This is a types for dialects of limit-offset.

You can choose are:

  LimitOffset  # LIMIT 100 OFFSET 20  (SQLite / PostgreSQL / MySQL)
  LimitXY      # LIMIT 20, 100        (MySQL / SQLite)
  LimitYX      # LIMIT 100, 20        (other)

Default value is LimitOffset".

METHODS ^

new([%options])

Create a new instance of SQL::Format.

  my $sqlf = SQL::Format->new(
      quote_char    => '',
      limit_dialect => 'LimitXY',
  );

%options specify are:

quote_char : Str

Default value is $SQL::Format::QUOTE_CHAR.

name_sep : Str

This is a separate character for table or column name.

Default value is $SQL::Format::NAME_SEP.

delimiter: Str

This is a delimiter for between columns.

Default value is $SQL::Format::DELIMITER.

limit_dialect : Str

This is a types for dialects of limit-offset.

Default value is $SQL::Format::LIMIT_DIALECT.

format($format, \%args)

This method same as sqlf function.

  my ($stmt, @bind) = $self->format('SELECT %c FROM %t WHERE %w',
      [qw/bar baz/],
      'foo',
      { hoge => 'fuga' },
  );
  # $stmt: SELECT `bar`, `baz` FROM ` foo` WHERE (`hoge` = ?)
  # @bind: ('fuga')

select($table|\@table, $column|\@columns [, \%where, \%opts ])

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

  my ($stmt, @bind) = $sqlf->select(foo => [qw/bar baz/], {
      hoge => 'fuga',
      piyo => [100, 200, 300],
  });
  # $stmt: SELECT `foo` FROM `bar`, `baz` WHERE (`hoge` = ?) AND (`piyo` IN (?, ?, ?))
  # @bind: ('fuga', 100, 200, 300)

Argument details are:

$table | \@table

Same as %t format.

$column | \@columns

Same as %c format.

\%where

Same as %w format.

\%opts
$opts->{prefix}

This is prefix for SELECT statement.

  my ($stmt, @bind) = $sqlf->select(foo => '*', { bar => 'baz' }, { prefix => 'SELECT SQL_CALC_FOUND_ROWS' });
  # $stmt: SELECT SQL_CALC_FOUND_ROWS * FROM `foo` WHERE (`bar` = ?)
  # @bind: ('baz')

Default value is SELECT.

$opts->{suffix}

Additional value for after the SELECT statement.

  my ($stmt, @bind) = $sqlf->select(foo => '*', { bar => 'baz' }, { suffix => 'FOR UPDATE' });
  # $stmt: SELECT * FROM `foo` WHERE (bar = ?) FOR UPDATE
  # @bind: ('baz')

Default value is ''

$opts->{limit}
$opts->{offset}
$opts->{order_by}
$opts->{group_by}
$opts->{having}
$opts->{join}

See also %o format.

insert($table, \%values|\@values [, \%opts ])

This method returns SQL string and bind parameters for INSERT statement.

  my ($stmt, @bind) = $sqlf->insert(foo => { bar => 'baz', hoge => 'fuga' });
  # $stmt: INSERT INTO `foo` (`bar`, `hoge`) VALUES (?, ?)
  # @bind: ('baz', 'fuga')

  my ($stmt, @bind) = $sqlf->insert(foo => [
      hoge => \'NOW()',
      fuga => \['UNIX_TIMESTAMP()', '2012-12-12 12:12:12'],
  ]);
  # $stmt: INSERT INTO `foo` (`hoge`, `fuga`) VALUES (NOW(), UNIX_TIMESTAMP(?))
  # @bind: ('2012-12-12 12:12:12')

Argument details are:

$table

This is a table name for target of INSERT.

\%values | \@values

This is a VALUES clause INSERT statement.

Currently supported types are:

  # \%values case
  { foo => 'bar' }
  { foo => \'NOW()' }
  { foo => \['UNIX_TIMESTAMP()', '2012-12-12 12:12:12'] }

  # \@values case
  [ foo => 'bar' ]
  [ foo => \'NOW()' ]
  [ foo => \['UNIX_TIMESTAMP()', '2012-12-12 12:12:12'] ]
\%opts
$opts->{prefix}

This is a prefix for INSERT statement.

  my ($stmt, @bind) = $sqlf->insert(foo => { bar => baz }, { prefix => 'INSERT IGNORE' });
  # $stmt: INSERT IGNORE INTO `foo` (`bar`) VALUES (?)
  # @bind: ('baz')

Default value is INSERT.

update($table, \%set|\@set [, \%where, \%opts ])

This method returns SQL string and bind parameters for UPDATE statement.

  my ($stmt, @bind) = $sqlf->update(foo => { bar => 'baz' }, { hoge => 'fuga' });
  # $stmt: UPDATE `foo` SET `bar` = ? WHERE (`hoge` = ?)
  # @bind: ('baz', 'fuga')

Argument details are:

$table

This is a table name for target of UPDATE.

\%set | \@set

This is a SET clause for INSERT statement.

Currently supported types are:

  # \%values case
  { foo => 'bar' }
  { foo => \'NOW()' }
  { foo => \['UNIX_TIMESTAMP()', '2012-12-12 12:12:12'] }

  # \@values case
  [ foo => 'bar' ]
  [ foo => \'NOW()' ]
  [ foo => \['UNIX_TIMESTAMP()', '2012-12-12 12:12:12'] ]
\%where

Same as %w format.

\%opts
$opts->{prefix}

This is a prefix for UPDATE statement.

  my ($stmt, @bind) = $sqlf->update(
      'foo'                                # table
      { bar    => 'baz' },                 # sets
      { hoge   => 'fuga' },                # where
      { prefix => 'UPDATE LOW_PRIORITY' }, # opts
  );
  # $stmt: UPDATE LOW_PRIORITY `foo` SET `bar` = ? WHERE (`hoge` = ?)
  # @bind: ('baz', 'fuga')

Default value is UPDATE.

$opts->{order_by}
$opts->{limit}

See also %o format.

delete($table [, \%where, \%opts ])

This method returns SQL string and bind parameters for DELETE statement.

  my ($stmt, @bind) = $sqlf->delete(foo => { bar => 'baz' });
  # $stmt: DELETE FROM `foo` WHERE (`bar = ?)
  # @bind: ('baz')

Argument details are:

$table

This is a table name for target of DELETE.

\%where

Same as %w format.

\%opts
$opts->{prefix}

This is a prefix for DELETE statement.

  my ($stmt, @bind) = $sqlf->delete(foo => { bar => 'baz' }, { prefix => 'DELETE LOW_PRIORITY' });
  # $stmt: DELETE LOW_PRIORITY FROM `foo` WHERE (`bar` = ?)
  # @bind: ('baz')

Default value is DELETE.

$opts->{order_by}
$opts->{limit}

See also %o format.

insert_multi($table, \@cols, \@values [, \%opts])

This method returns SQL string and bind parameters for bulk insert.

  my ($stmt, @bind) = $self->insert_multi(
      foo => [qw/bar baz/],
      [
          [qw/hoge fuga/],
          [qw/fizz buzz/],
      ],
  );
  # $stmt: INSERT INTO `foo` (`bar`, `baz`) VALUES (?, ?), (?, ?)
  # @bind: (qw/hoge fuga fizz buzz/)

Argument details are:

$table

This is a table name for target of INSERT.

\@cols

This is a columns for target of INSERT.

\@values

This is a values parameters. Must be ARRAY within ARRAY.

  my ($stmt, @bind) = $sqlf->insert_multi(
      foo => [qw/bar baz/], [
          [qw/foo bar/],
          [\'NOW()', \['UNIX_TIMESTAMP(?)', '2012-12-12 12:12:12'] ],
      ],
  );
  # $stmt: INSERT INTO `foo` (`bar`, `baz`) VALUES (?, ?), (NOW(), UNIX_TIMESTAMP(?))
  # @bind: (qw/foo bar/, '2012-12-12 12:12:12')
\%opts
$opts->{prefix}

This is a prefix for INSERT statement.

  my ($stmt, @bind) = $sqlf->insert_multi(..., { prefix => 'INSERT IGNORE INTO' });
  # $stmt: INSERT IGNORE INTO ...

Default value is INSERT INTO.

$opts->{update}

Some as %s format.

If this value specified then add ON DUPLICATE KEY UPDATE statement.

  my ($stmt, @bind) = $sqlf->insert_multi(
      foo => [qw/bar baz/],
      [
          [qw/hoge fuga/],
          [qw/fizz buzz/],
      ],
      { update => { bar => 'piyo' } },
  );
  # $stmt: INSERT INTO `foo` (`bar`, `baz`) VALUES (?, ?), (?, ?) ON DUPLICATE KEY UPDATE `bar` = ?
  # @bind: (qw/hoge fuga fizz buzz piyo/)

insert_multi_from_hash($table, \@values [, \%opts])

This method is a wrapper for insert_multi().

Argument dialects are:

$table

Same as insert_multi()

\@values

This is a values parameters. Must be HASH within ARRAY.

  my ($stmt, @bind) = $sqlf->insert_multi_from_hash(foo => [
      { bar => 'hoge', baz => 'fuga' },
      { bar => 'fizz', baz => 'buzz' },
  ]);
  # $stmt: INSERT INTO `foo` (`bar`, `baz`) VALUES (?, ?), (?, ?)
  # @bind: (qw/hoge fuga fizz buzz/)
\%opts

Same as insert_multi()

insert_on_duplicate($table, \%values|\@values, \%update_values|\@update_values [, \%opts])

This method generate "INSERT INTO ... ON DUPLICATE KEY UPDATE" query for MySQL.

  my ($stmt, @bind) = $sqlf->insert_on_duplicate(
      foo => {
          bar => 'hoge',
          baz => 'fuga',
      }, {
          bar => \'VALUES(bar)',
          baz => 'piyo',
      },
  );
  # $stmt: INSERT INTO `foo` (`bar`, `baz`) VALUES (?, ?) ON DUPLICATE KEY UPDATE `bar` = VALUES(bar), baz = 'piyo'
  # @bind: (qw/hoge fuga piyo/)

Argument details are:

$table

This is a table name for target of INSERT.

\%values|\@values

This is a values parameters.

\%update_values|\@update_values

This is a ON DUPLICATE KEY UPDATE parameters.

\%opts
$opts->{prefix}

This is a prefix for INSERT statement.

  my ($stmt, @bind) = $sqlf->insert_on_duplicate(..., { prefix => 'INSERT IGNORE INTO' });
  # $stmt: INSERT IGNORE INTO ...

AUTHOR ^

xaicron <xaicron {at} cpan.org>

COPYRIGHT ^

Copyright 2012 - xaicron

LICENSE ^

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

SEE ALSO ^

SQL::Format::Spec

SQL::Maker

SQL::Abstract

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