ABAP Select data from SAP table FRMLC13 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FRMLC13 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 FRMLC13. 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 FRMLC13 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_FRMLC13 TYPE STANDARD TABLE OF FRMLC13,
      WA_FRMLC13 TYPE FRMLC13,
      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: <FRMLC13> TYPE FRMLC13.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FRMLC13.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FRMLC13
  INTO TABLE IT_FRMLC13.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLC13
*  INTO TABLE @DATA(IT_FRMLC132).
*--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_FRMLC13 INDEX 1 INTO DATA(WA_FRMLC132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FRMLC13 ASSIGNING <FRMLC13>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRMLC13>-MANDT = 1.
<FRMLC13>-PARAM = 1.
<FRMLC13>-ALLOW_DUPLICATES = 1.
<FRMLC13>-WARN_DUPLICATES = 1.
<FRMLC13>-COMPTGT = 1.

ENDLOOP.

LOOP AT IT_FRMLC13 INTO WA_FRMLC13.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRMLC13-OPLOW, sy-vline,
  WA_FRMLC13-COMPLOW, sy-vline,
  WA_FRMLC13-OPUP, sy-vline,
  WA_FRMLC13-COMPUPP, sy-vline,
  WA_FRMLC13-UNIT, sy-vline,
  WA_FRMLC13-EXCVAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRMLC13 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_FRMLC13 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_FRMLC13 INTO WA_FRMLC13.


*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_FRMLC13_STR, 
MANDT TYPE STRING,
PARAM TYPE STRING,
ALLOW_DUPLICATES TYPE STRING,
WARN_DUPLICATES TYPE STRING,
COMPTGT TYPE STRING,
OPLOW TYPE STRING,
COMPLOW TYPE STRING,
OPUP TYPE STRING,
COMPUPP TYPE STRING,
UNIT TYPE STRING,
EXCVAL TYPE STRING,
ADDVAL TYPE STRING,
STAGE TYPE STRING,
OPERATION TYPE STRING,
ACTION TYPE STRING,
OVR_FACTOR TYPE STRING,
TS_QTY TYPE STRING,
LEVL TYPE STRING,
LEVL_NAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLC13_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_FRMLC13_STR-MANDT sy-vline 
WA_FRMLC13_STR-PARAM sy-vline 
WA_FRMLC13_STR-ALLOW_DUPLICATES sy-vline 
WA_FRMLC13_STR-WARN_DUPLICATES sy-vline 
WA_FRMLC13_STR-COMPTGT sy-vline 
WA_FRMLC13_STR-OPLOW sy-vline 
WA_FRMLC13_STR-COMPLOW sy-vline 
WA_FRMLC13_STR-OPUP sy-vline 
WA_FRMLC13_STR-COMPUPP sy-vline 
WA_FRMLC13_STR-UNIT sy-vline 
WA_FRMLC13_STR-EXCVAL sy-vline 
WA_FRMLC13_STR-ADDVAL sy-vline 
WA_FRMLC13_STR-STAGE sy-vline 
WA_FRMLC13_STR-OPERATION sy-vline 
WA_FRMLC13_STR-ACTION sy-vline 
WA_FRMLC13_STR-OVR_FACTOR sy-vline 
WA_FRMLC13_STR-TS_QTY sy-vline 
WA_FRMLC13_STR-LEVL sy-vline 
WA_FRMLC13_STR-LEVL_NAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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