ABAP Keyword Documentation → ABAP - Reference → Processing Internal Data → Internal Tables → Processing Statements for Internal Tables
Internal Tables - keyname
The name of the table key
can be specified in several statements and in table expressions for the editing of internal tables.
The table key name can used to access a table row or to control processing. The following syntax applies to the label
Other versions: 7.31 | 7.40 | 7.54
... key_name | (name) ...
The name of a table key can either be specified directly, as
dynamically, as the contents of a parenthesized character-like data object
(not case-sensitive). If the name is specified directly, this name must clearly indicate that the internal table has this key. With generic data types, the name can only be specified dynamically.
You can specify:
- a secondary table key using its name
- the primary table key using its predefined name
- the primary table key using an alias
- the table key used in a
LOOP-loop using its predefined name
loop_key. In this case, the statement must be executed within the loop.
- Normally secondary table keys are specified. Only if
searches are to be performed explicitly in a
table expression using the primary table key does the key need be specified using its predefined name
primary_keyor an alias name.
- When specifying the primary table key using
primary_key, it is important to note that it may be empty for standard tables. This can produce unexpected behavior in statements where the key is used to specify the rows to be processed.