Itab * itab.ĪSSIGN itab TO FIELD-SYMBOL(). The second calculation shows how this can be avoided by using an The same selection is made three times in the same statement. Here, the first calculation with table rows is a bad example of how to use table expressions. SELECT * FROM scarr INTO TABLE = cl_demo_spfli=>get_spfli(ĬOMPONENTS carrname = 'United Airlines' ]-carrid ).Ĭl_demo_output=>display( `Nothing found` ). WITH NON-UNIQUE SORTED KEY name COMPONENTS carrname. In this table, the component carrname of theĭATA carrier_tab TYPE HASHED TABLE OF scarr The content of the component carrid of the row of the internal tableĬarrier_tab is passed to the method get_spfli. Mesh path expressions are a special form of table expression that can be used in exactly the same way as table expressions.LOOP generally displays better performance than using table expressions in a loop. If multiple rows of an internal table are to be read, the statement Unlike READ TABLE, a table expression does not modify the value of the system field sy-tabix.Ī table expression is a single row read.Each table expression can be view as a short form for a variant of the statement READ TABLE that enables reads to be performed on rows of internal tables in operand positions.In these cases, a selection should be made before the statement and the result referenced by a field symbol or reference variable. Duplicate selections (multiple reads performed on the same row of an internal table in differentĮxpressions) must be avoided manually.Specified offset/length +off(len), but this is possible after aĬhaining whose final place is a suitable structure component after a structure component selector. A table expression cannot be followed directly by a.Functions and constructor expressions cannot currently be specified for itab, but the table expressions shown under.In other operand positions, these empty brackets distinguish the table body from In table expressions, the empty square brackets cannot be specified behind itab.Unlike other syntax representations in the ABAP key word documentation, the " " characters are part of the syntax.when used in the table function line_index, where the value 0 is returned. when used in the predicate function line_exists, where the logical value "false" is returned,.a table expression is used in the statement ASSIGN, where sy-subrc is set to the value 4,. a default value is specified in the definition of the type of the result,.If the specified row is not found, a handleable expression of the class CX_SY_ITAB_LINE_NOT_FOUND is raised in all operand positions, except when Table expression cannot yet, however, be specified on the left side of Header line, the table body is addressed and not the header line.Ĭan be used to access components of the row in question and direct chainings [ The internal table itab must be specified directly using its name, a field symbol, or a dereferenced data reference as described under Once found, the row in question can be modified directly here. A table expression can be specified as a writable expression in.A table expression can be specified as an argument of the.A table expression can be specified as a specialĮxpression variant for the memory area in the statement ASSIGN.Type of the result cannot be controlled in these operand positions usingĭefault value can be specified for rows not found. A table expression can be specified in general expression positions andįunctional operand positions with an appropriate.The expression finds the specified row in the internal table and returns it as the result of the corresponding row type, which can be used as follows: ( itab_line) specified in square brackets [ ABAP Keyword Documentation →Įxpressions and Functions for Internal Tables →Ī table expression consists of an internal table itab, followed directly by a row SAP NetWeaver AS ABAP Release 740, ©Copyright 2014 SAP AG.
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