row_group: true|false
{
"DataBaseTables": {
"TableName": {
"interface": {
"fields": { },
"views": {
"default": {
"fields" : [
{"field": "cat","row_group": true}
]
}
}
}
}
}
}
When you want in a view to group in Rows for specific field you can set the property row_group=true in the field definition