ABAP Select data from SAP table FPMGB_S_LISTFIELD_DESCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FPMGB_S_LISTFIELD_DESCR
*  INTO TABLE @DATA(IT_FPMGB_S_LISTFIELD_DESCR2).
*--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_FPMGB_S_LISTFIELD_DESCR INDEX 1 INTO DATA(WA_FPMGB_S_LISTFIELD_DESCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FPMGB_S_LISTFIELD_DESCR>-NAME = 1.
<FPMGB_S_LISTFIELD_DESCR>-DDIC_SHLP_NAME = 1.
<FPMGB_S_LISTFIELD_DESCR>-OVS_NAME = 1.
<FPMGB_S_LISTFIELD_DESCR>-TOOLTIP = 1.
<FPMGB_S_LISTFIELD_DESCR>-HELP_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FPMGB_S_LISTFIELD_DESCR-FIXED_VALUES, sy-vline,
  WA_FPMGB_S_LISTFIELD_DESCR-CQ, sy-vline,
  WA_FPMGB_S_LISTFIELD_DESCR-CQ_REF, sy-vline,
  WA_FPMGB_S_LISTFIELD_DESCR-TECHNICAL_FIELD, sy-vline,
  WA_FPMGB_S_LISTFIELD_DESCR-LINK, sy-vline,
  WA_FPMGB_S_LISTFIELD_DESCR-LINK_REF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FPMGB_S_LISTFIELD_DESCR 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_FPMGB_S_LISTFIELD_DESCR 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_FPMGB_S_LISTFIELD_DESCR INTO WA_FPMGB_S_LISTFIELD_DESCR.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_FPMGB_S_LISTFIELD_DESCR_STR, 
NAME TYPE STRING,
DDIC_SHLP_NAME TYPE STRING,
OVS_NAME TYPE STRING,
TOOLTIP TYPE STRING,
HELP_TEXT TYPE STRING,
FIXED_VALUES TYPE STRING,
CQ TYPE STRING,
CQ_REF TYPE STRING,
TECHNICAL_FIELD TYPE STRING,
LINK TYPE STRING,
LINK_REF TYPE STRING,
READ_ONLY TYPE STRING,
READ_ONLY_REF TYPE STRING,
MANDATORY TYPE STRING,
MANDATORY_REF TYPE STRING,
DISABLED TYPE STRING,
ENABLED_REF TYPE STRING,
VISIBILITY TYPE STRING,
VISIBILITY_REF TYPE STRING,
SP_GROUP TYPE STRING,
HEADER_LABEL TYPE STRING,
HEADER_LABEL_BY_DDIC TYPE STRING,
TEXT TYPE STRING,
TEXT_REF TYPE STRING,
ALLOW_SORT TYPE STRING,
ALLOW_FILTER TYPE STRING,
SORT_REF TYPE STRING,
FILTER_REF TYPE STRING,
TOOLTIP_REF TYPE STRING,
HELP_TEXT_REF TYPE STRING,
NULL_AS_BLANK TYPE STRING,
SIGN_POS TYPE STRING,
CONDENSE TYPE STRING,
DATE_FORMAT TYPE STRING,
SHORT_TIME TYPE STRING,
HEADER_TEXT_WRAPPING TYPE STRING,
WIDTH TYPE STRING,
GROUP_SAME_CELLS TYPE STRING,
PROGRESS_INDICATOR_DISPLAY_REF TYPE STRING,
DEFAULT_DISPLAY_TYPE TYPE STRING,
IMAGE_REF TYPE STRING,
TAG_NAME TYPE STRING,
CELL_DESIGN_REF TYPE STRING,
WD_VALUE_HELP TYPE STRING,
WRAP_TEXT TYPE STRING,
GROUPING_REF TYPE STRING,
ALLOW_AGGREGATION TYPE STRING,
ORDER_AS_TEXT TYPE STRING,
ORDER_OF_CRITERION TYPE STRING,
ENUMERATION TYPE STRING,
IS_NULLABLE TYPE STRING,
HEADER_LABEL_TOOLTIP TYPE STRING,
FIXED_VALUES_IS_ROW_SPECIFIC TYPE STRING,
REL_DATE_TOKEN_PROVIDER TYPE STRING,
HELP_TEXT_HEADER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FPMGB_S_LISTFIELD_DESCR_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_FPMGB_S_LISTFIELD_DESCR_STR-NAME sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-DDIC_SHLP_NAME sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-OVS_NAME sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TOOLTIP sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HELP_TEXT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-FIXED_VALUES sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-CQ sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-CQ_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TECHNICAL_FIELD sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-LINK sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-LINK_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-READ_ONLY sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-READ_ONLY_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-MANDATORY sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-MANDATORY_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-DISABLED sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ENABLED_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-VISIBILITY sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-VISIBILITY_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-SP_GROUP sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HEADER_LABEL sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HEADER_LABEL_BY_DDIC sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TEXT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TEXT_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ALLOW_SORT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ALLOW_FILTER sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-SORT_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-FILTER_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TOOLTIP_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HELP_TEXT_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-NULL_AS_BLANK sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-SIGN_POS sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-CONDENSE sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-DATE_FORMAT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-SHORT_TIME sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HEADER_TEXT_WRAPPING sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-WIDTH sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-GROUP_SAME_CELLS sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-PROGRESS_INDICATOR_DISPLAY_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-DEFAULT_DISPLAY_TYPE sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-IMAGE_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-TAG_NAME sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-CELL_DESIGN_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-WD_VALUE_HELP sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-WRAP_TEXT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-GROUPING_REF sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ALLOW_AGGREGATION sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ORDER_AS_TEXT sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ORDER_OF_CRITERION sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-ENUMERATION sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-IS_NULLABLE sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HEADER_LABEL_TOOLTIP sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-FIXED_VALUES_IS_ROW_SPECIFIC sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-REL_DATE_TOKEN_PROVIDER sy-vline 
WA_FPMGB_S_LISTFIELD_DESCR_STR-HELP_TEXT_HEADER sy-vline      INTO ld_text SEPARATED BY SPACE.

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