PLAN_TBLRANGE is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Range for Planning Table" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_PLAN_TBLRANGE TYPE PLAN_TBLRANGE.
The PLAN_TBLRANGE table consists of various fields, each holding specific information or linking keys about Range for Planning Table data available in SAP. These include OPTION (Selection operator OPTION (as per range table)), INFOSOURCE_LOW (Name of variant table), INFOSOURCE_HIGH (Name of variant table)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .