ABAP Select data from SAP table FMFG_APW into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMFG_APW 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 FMFG_APW. 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 FMFG_APW 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_FMFG_APW TYPE STANDARD TABLE OF FMFG_APW,
      WA_FMFG_APW TYPE FMFG_APW,
      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: <FMFG_APW> TYPE FMFG_APW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMFG_APW
*  INTO TABLE @DATA(IT_FMFG_APW2).
*--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_FMFG_APW INDEX 1 INTO DATA(WA_FMFG_APW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMFG_APW>-BUKRS = 1.
<FMFG_APW>-LIFNR = 1.
<FMFG_APW>-KUNNR = 1.
<FMFG_APW>-XBLNR = 1.
<FMFG_APW>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMFG_APW-EBELP, sy-vline,
  WA_FMFG_APW-GJAHR, sy-vline,
  WA_FMFG_APW-ZLSPR, sy-vline,
  WA_FMFG_APW-DMBTR, sy-vline,
  WA_FMFG_APW-ZFBDT, sy-vline,
  WA_FMFG_APW-PPA_DD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMFG_APW 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_FMFG_APW 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_FMFG_APW INTO WA_FMFG_APW.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_APW-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_APW-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_APW-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_APW-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field GA_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMFG_APW-GA_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMFG_APW-GA_NBR.
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_FMFG_APW_STR, 
BUKRS TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
XBLNR TYPE STRING,
BELNR TYPE STRING,
EBELP TYPE STRING,
GJAHR TYPE STRING,
ZLSPR TYPE STRING,
DMBTR TYPE STRING,
ZFBDT TYPE STRING,
PPA_DD TYPE STRING,
V_DUE_DATE TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
PENFC TYPE STRING,
BLDAT TYPE STRING,
REINDAT TYPE STRING,
BUDAT TYPE STRING,
P_GA_DATE TYPE STRING,
P_CR_DATE TYPE STRING,
P_GR_DATE TYPE STRING,
RUN_DATE TYPE STRING,
SPECIAL_COMMODITY TYPE STRING,
START_CLOCK_DATE TYPE STRING,
IMPROPER_INV_ADJ TYPE STRING,
WEEKND_HOL_ADJ TYPE STRING,
TREASURY_LAG_DAYS TYPE STRING,
PAY_PROC_WEEKND_HOL_ADJ TYPE STRING,
ON_TIME_PAY_RUN_DATE TYPE STRING,
DATE_INT_CALC_THRU TYPE STRING,
DAYS_LATE TYPE STRING,
FAST_PAY TYPE STRING,
ACCEL_PAY TYPE STRING,
SSBLK TYPE STRING,
PAY_AT_EARLIEST TYPE STRING,
MOST_ADVAN_OVERRIDE TYPE STRING,
GR_NBR TYPE STRING,
GA_NBR TYPE STRING,
PPA_RELEVANT TYPE STRING,
TOT_PAY_AMT TYPE STRING,
FUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMFG_APW_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_FMFG_APW_STR-BUKRS sy-vline 
WA_FMFG_APW_STR-LIFNR sy-vline 
WA_FMFG_APW_STR-KUNNR sy-vline 
WA_FMFG_APW_STR-XBLNR sy-vline 
WA_FMFG_APW_STR-BELNR sy-vline 
WA_FMFG_APW_STR-EBELP sy-vline 
WA_FMFG_APW_STR-GJAHR sy-vline 
WA_FMFG_APW_STR-ZLSPR sy-vline 
WA_FMFG_APW_STR-DMBTR sy-vline 
WA_FMFG_APW_STR-ZFBDT sy-vline 
WA_FMFG_APW_STR-PPA_DD sy-vline 
WA_FMFG_APW_STR-V_DUE_DATE sy-vline 
WA_FMFG_APW_STR-ZTERM sy-vline 
WA_FMFG_APW_STR-ZBD1T sy-vline 
WA_FMFG_APW_STR-ZBD2T sy-vline 
WA_FMFG_APW_STR-ZBD3T sy-vline 
WA_FMFG_APW_STR-ZBD1P sy-vline 
WA_FMFG_APW_STR-ZBD2P sy-vline 
WA_FMFG_APW_STR-PENFC sy-vline 
WA_FMFG_APW_STR-BLDAT sy-vline 
WA_FMFG_APW_STR-REINDAT sy-vline 
WA_FMFG_APW_STR-BUDAT sy-vline 
WA_FMFG_APW_STR-P_GA_DATE sy-vline 
WA_FMFG_APW_STR-P_CR_DATE sy-vline 
WA_FMFG_APW_STR-P_GR_DATE sy-vline 
WA_FMFG_APW_STR-RUN_DATE sy-vline 
WA_FMFG_APW_STR-SPECIAL_COMMODITY sy-vline 
WA_FMFG_APW_STR-START_CLOCK_DATE sy-vline 
WA_FMFG_APW_STR-IMPROPER_INV_ADJ sy-vline 
WA_FMFG_APW_STR-WEEKND_HOL_ADJ sy-vline 
WA_FMFG_APW_STR-TREASURY_LAG_DAYS sy-vline 
WA_FMFG_APW_STR-PAY_PROC_WEEKND_HOL_ADJ sy-vline 
WA_FMFG_APW_STR-ON_TIME_PAY_RUN_DATE sy-vline 
WA_FMFG_APW_STR-DATE_INT_CALC_THRU sy-vline 
WA_FMFG_APW_STR-DAYS_LATE sy-vline 
WA_FMFG_APW_STR-FAST_PAY sy-vline 
WA_FMFG_APW_STR-ACCEL_PAY sy-vline 
WA_FMFG_APW_STR-SSBLK sy-vline 
WA_FMFG_APW_STR-PAY_AT_EARLIEST sy-vline 
WA_FMFG_APW_STR-MOST_ADVAN_OVERRIDE sy-vline 
WA_FMFG_APW_STR-GR_NBR sy-vline 
WA_FMFG_APW_STR-GA_NBR sy-vline 
WA_FMFG_APW_STR-PPA_RELEVANT sy-vline 
WA_FMFG_APW_STR-TOT_PAY_AMT sy-vline 
WA_FMFG_APW_STR-FUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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