NAME
DBIx::DBO::Table - An OO interface to SQL queries and results. Encapsulates a table in an object.
SYNOPSIS
# Create a Table object
my $table = $dbo->table('my_table');
# Get a column reference
my $column = $table ** 'employee_id';
# Quickly display my employee id
print $table->fetch_value('employee_id', name => 'Vernon');
# Find the IDs of fired employees
my @fired = @{ $table->fetch_column('id', status => 'fired');
# Insert a new row into the table
$table->insert(employee_id => 007, name => 'James Bond');
# Remove rows from the table where the name IS NULL
$table->delete(name => undef);DESCRIPTION
Table objects are mostly used for column references in a Query. They can also be used for INSERTs, DELETEs and simple lookups (fetch_*).
METHODS
new
DBIx::DBO::Table->new($dbo, $table);
DBIx::DBO::Table->new($dbo, [$schema, $table]);
DBIx::DBO::Table->new($dbo, $table_object);Create and return a new Table object. Tables can be specified by their name or an arrayref of schema and table name or another Table object.
tables
Return a list of Table objects, which will always be this Table object.
columns
Return a list of column names.
column
$table->column($column_name);
$table ** $column_name;Returns a reference to a column for use with other methods. The ** method is a shortcut for the column method.
row
Returns a new empty Row object for this table.
fetch_row
$table->fetch_row(%where);Fetch the first matching row from the table returning it as a Row object.
The %where is a hash of field/value pairs. The value can be a simple SCALAR or undef for NULL It can also be a SCALAR reference, which will be used without quoting, or an ARRAY reference for multiple IN values.
$someone = $table->fetch_row(age => 21, join_date => \'CURDATE()', end_date => undef);
$a_child = $table->fetch_row(name => \'NOT NULL', age => [5 .. 15]);fetch_value
$table->fetch_value($column, %where);Fetch the first matching row from the table returning the value in one column.
fetch_hash
$table->fetch_hash(%where);Fetch the first matching row from the table returning it as a hashref.
fetch_column
$table->fetch_column($column, %where);Fetch all matching rows from the table returning an arrayref of the values in one column.
insert
$table->insert(name => 'Richard', age => 103);Insert a row into the table. Returns true on success or undef on failure.
On supporting databases you may also use $table->last_insert_id to retreive the autogenerated ID (if there was one) from the last inserted row.
last_insert_id
$table->insert(name => 'Quentin');
my $row_id = $table->last_insert_id;Retreive the autogenerated ID (if there was one) from the last inserted row.
Returns the ID or undef if it's unavailable.
bulk_insert
$table->bulk_insert(
columns => [qw(id name age)],
rows => [{name => 'Richard', age => 103}, ...]
);
$table->bulk_insert(
columns => [qw(id name age)],
rows => [[ undef, 'Richard', 103 ], ...]
);Insert multiple rows into the table. Returns the number of rows inserted or undef on failure.
On supporting databases you may also use $table->last_insert_id to retreive the autogenerated ID (if there was one) from the last inserted row.
delete
$table->delete(name => 'Richard', age => 103);Delete all rows from the table matching the criteria. Returns the number of rows deleted or undef on failure.
truncate
$table->truncate;Truncate the table. Returns true on success or undef on failure.
Common Methods
These methods are accessible from all DBIx::DBO* objects.
dbo
The DBO object.
dbh
The read-write DBI handle.
rdbh
The read-only DBI handle, or if there is no read-only connection, the read-write DBI handle.
config
$table_setting = $table->config($option);
$table->config($option => $table_setting);Get or set the Table config settings. When setting an option, the previous value is returned. When getting an option's value, if the value is undefined, the DBIx::DBO's value is returned.
See "Available_config_options" in DBIx::DBO.