The most common case is when the internal table is sorted exactly by the order of the components of When the additionsĪSSIGNING and REFERENCE INTO are used, the referenced table rows are not modified when entering and exiting the AT- ENDAT control structure. When the AT- ENDAT control structure is entered,Īnd is reset to the content of the current row when the control structure is exited. The content of wa is overwritten (depending on the respective group level) Specified in the statement LOOP after the addition INTO cannot be modified. The internal table cannot be modified within the LOOP loop.Ī work area wa specified in the LOOP statement after the addition INTO must beĬompatible with the row type of the table.Ī field symbol specified in the statement LOOP after the addition ASSIGNING must be typed with the row type of the table. The following rules must be followed for effective group level processing:Ĭond must be chosen so that it produces the required processing order of the imported rows.Ī restricting condition specified in LOOP in cond must select a contiguous row block in the internal table. The LOOP- ENDLOOP control structure that are notĮxecuted within an AT- ENDAT control structure are executed in each pass of the loop. Structures are executed if an appropriate group break is made in the current table row. The statement blocks within the AT- ENDAT control Here, the control structures are specified in accordance with the arrangement of the components in the group key and are not nested. It is possible, from a syntax point of view, to arrange ATĬontrol structures in any order and to nest them, however effective group level processing is usually These are the rows that have the same content in a group key defined in their Group levels are defined using the variant AT NEW and the sequence of rows Within the statement blocks, the statement SUM can be specified to total the numeric components of a group level.Īpart from the special variants AT FIRST and AT LAST, Group breaks between group levels are a result of the row structureĪnd the processing order in which the LOOP reads the rows of the internal The additions of the statements AT define the criteria for a Group breaks, that is, in the transition of a The statements AT and ENDAT define statement blocks that are executed at The corresponding control statement is AT. Without the addition GROUP BY can contain control structures for Processing Statements for Internal Tables → SAP NetWeaver AS ABAP Release 751, ©Copyright 2017 SAP AG.
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