![]() 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 or a FOR expression 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.Positions (like the left side of an assignment) or as actual parameters for output parameters always raise an exception. More specifically, table expressions that return a row of a sorted table or hashed table to writing Variable as to other field symbols or data reference variables that point to rows of internal tables. Result is a field symbol or temporary reference In writing positions, the same restrictions with respect to modifying key fields apply to table expressions whose.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.If only index accessesĪre used in statements with multiple table expressions, it is not possible to distinguish which expression was unsuccessful. The exception class CX_SY_ITAB_LINE_NOT_FOUND contains attributes forĭisplaying the row number in the index or key used when a row cannot be accessed.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.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.when used in the table function line_index, where the value 0 is returned.when used in the predicate function line_exists, where the truth value "false" is returned,.a table expression is used in the statement ASSIGN, where sy-subrc is set to the value 4,. ![]()
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