What is table key in SAP BC-ABA - ABAP Runtime Environment?

SAP Term: table key

• Component: BC-ABA

• Component Name: ABAP Runtime Environment

• Description: Columns of an internal table or a database table whose content identifies table rows. The table key of an internal table can, depending on the table kind involved, be either unique or non-unique. The table keys of database tables are always unique. A difference is made between primary and secondary table keys.

Smart SAP Assistant

• Key Concepts: 
  A table key is a unique identifier for a record in an SAP table. It is used to identify and access the data stored in the table. The table key consists of one or more fields that are used to uniquely identify a record in the table. In the ABAP Runtime Environment, the table key is used to access data from the database. 
  
  How to use it: 
  Table keys are used to access data from an SAP table. To access a record in an SAP table, you must specify the table key. The table key consists of one or more fields that are used to uniquely identify a record in the table. The fields that make up the table key can be specified in the WHERE clause of an ABAP SELECT statement. 
  
  Tips & Tricks: 
  When specifying a table key, it is important to ensure that all of the fields that make up the key are specified correctly. If any of the fields are incorrect, then the data will not be retrieved correctly from the database. Additionally, it is important to ensure that all of the fields that make up the key are specified in the correct order. 
  
  Related Information: 
  For more information on how to use table keys in ABAP, please refer to SAP Help documentation on Table Keys (https://help.sap.com/doc/abapdocu_751_index_htm/7.51/en-US/abenabap_table_keys.htm).