{
    "mode": "perldoc",
    "parameter": "Class::DBI::ColumnGrouper",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/Class%3A%3ADBI%3A%3AColumnGrouper/json",
    "generated": "2026-10-08T12:37:51Z",
    "synopsis": "my $colg = Class::DBI::ColumnGrouper->new;\n$colg->addgroup(People => qw/star director producer/);\nmy @cols = $colg->groupcols($group);\nmy @all            = $colg->allcolumns;\nmy @pricol        = $colg->primary;\nmy @essentialcols = $colg->essential;",
    "sections": {
        "NAME": {
            "content": "Class::DBI::ColumnGrouper - Columns and Column Groups\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "my $colg = Class::DBI::ColumnGrouper->new;\n$colg->addgroup(People => qw/star director producer/);\n\nmy @cols = $colg->groupcols($group);\n\nmy @all            = $colg->allcolumns;\nmy @pricol        = $colg->primary;\nmy @essentialcols = $colg->essential;\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "Each Class::DBI class maintains a list of its columns as class data. This provides an interface\nto that. You probably don't want to be dealing with this directly.\n",
            "subsections": []
        },
        "METHODS": {
            "content": "new\nmy $colg = Class::DBI::ColumnGrouper->new;\n\nA new blank ColumnnGrouper object.\n\nclone\nmy $colg2 = $colg->clone;\n\nClone an existing ColumnGrouper.\n\naddcolumn / findcolumn\n$colg->addcolumn($name);\nmy Class::DBI::Column $col = $colg->findcolumn($name);\n\nAdd or return a Column object for the given column name.\n\naddgroup\n$colg->addgroup(People => qw/star director producer/);\n\nThis adds a list of columns as a column group.\n\ngroupcols / groupsfor\nmy @colg = $cols->groupcols($group);\nmy @groups = $cols->groupsfor(@cols);\n\nThis returns a list of all columns which are in the given group, or the groups a given column is\nin.\n\ncolumnsin\nmy @cols = $colg->columnsin(@groups);\n\nThis returns a list of all columns which are in the given groups.\n\nallcolumns\nmy @all = $colg->allcolumns;\n\nThis returns a list of all the real columns.\n\nprimary\nmy $pricol = $colg->primary;\n\nThis returns a list of the columns in the Primary group.\n\nessential\nmy @essentialcols = $colg->essential;\n\nThis returns a list of the columns in the Essential group.\n",
            "subsections": []
        }
    },
    "summary": "Class::DBI::ColumnGrouper - Columns and Column Groups",
    "flags": [],
    "examples": [],
    "see_also": []
}