ABAP Select data from SAP table AFFL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFFL table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to AFFL. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the AFFL table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_AFFL TYPE STANDARD TABLE OF AFFL,
      WA_AFFL TYPE AFFL,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <AFFL> TYPE AFFL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AFFL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AFFL
  INTO TABLE IT_AFFL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFFL
*  INTO TABLE @DATA(IT_AFFL2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_AFFL INDEX 1 INTO DATA(WA_AFFL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AFFL ASSIGNING <AFFL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFFL>-MANDT = 1.
<AFFL>-AUFPL = 1.
<AFFL>-APLZL = 1.
<AFFL>-PLNTY = 1.
<AFFL>-PLNNR = 1.

ENDLOOP.

LOOP AT IT_AFFL INTO WA_AFFL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFFL-PLNAL, sy-vline,
  WA_AFFL-PLNFL, sy-vline,
  WA_AFFL-ZAEHL, sy-vline,
  WA_AFFL-AENNR, sy-vline,
  WA_AFFL-FLGAT, sy-vline,
  WA_AFFL-BEZFL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFFL you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_AFFL TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_AFFL INTO WA_AFFL.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-PLNFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-PLNFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-BEZFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-BEZFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_AFFL-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFFL-TXTSP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AFFL_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
ZAEHL TYPE STRING,
AENNR TYPE STRING,
FLGAT TYPE STRING,
BEZFL TYPE STRING,
BKNT1 TYPE STRING,
BKNT2 TYPE STRING,
LTXA1 TYPE STRING,
TXTSP TYPE STRING,
LOSVN TYPE STRING,
LOSBS TYPE STRING,
BSCHL1 TYPE STRING,
BSCHL2 TYPE STRING,
AUSCHL TYPE STRING,
OBJNR TYPE STRING,
OBJTYPE TYPE STRING,
CH_PROC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFFL_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_AFFL_STR-MANDT sy-vline 
WA_AFFL_STR-AUFPL sy-vline 
WA_AFFL_STR-APLZL sy-vline 
WA_AFFL_STR-PLNTY sy-vline 
WA_AFFL_STR-PLNNR sy-vline 
WA_AFFL_STR-PLNAL sy-vline 
WA_AFFL_STR-PLNFL sy-vline 
WA_AFFL_STR-ZAEHL sy-vline 
WA_AFFL_STR-AENNR sy-vline 
WA_AFFL_STR-FLGAT sy-vline 
WA_AFFL_STR-BEZFL sy-vline 
WA_AFFL_STR-BKNT1 sy-vline 
WA_AFFL_STR-BKNT2 sy-vline 
WA_AFFL_STR-LTXA1 sy-vline 
WA_AFFL_STR-TXTSP sy-vline 
WA_AFFL_STR-LOSVN sy-vline 
WA_AFFL_STR-LOSBS sy-vline 
WA_AFFL_STR-BSCHL1 sy-vline 
WA_AFFL_STR-BSCHL2 sy-vline 
WA_AFFL_STR-AUSCHL sy-vline 
WA_AFFL_STR-OBJNR sy-vline 
WA_AFFL_STR-OBJTYPE sy-vline 
WA_AFFL_STR-CH_PROC sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.