ABAP Select data from SAP table FRMLS_LIST_LOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLS_LIST_LOM
*  INTO TABLE @DATA(IT_FRMLS_LIST_LOM2).
*--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_FRMLS_LIST_LOM INDEX 1 INTO DATA(WA_FRMLS_LIST_LOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRMLS_LIST_LOM>-MANDT = 1.
<FRMLS_LIST_LOM>-RECN = 1.
<FRMLS_LIST_LOM>-RECNMST = 1.
<FRMLS_LIST_LOM>-RECNROOT = 1.
<FRMLS_LIST_LOM>-AENNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRMLS_LIST_LOM-VALFR, sy-vline,
  WA_FRMLS_LIST_LOM-VALTO, sy-vline,
  WA_FRMLS_LIST_LOM-LINEMODE, sy-vline,
  WA_FRMLS_LIST_LOM-LOCKMODE, sy-vline,
  WA_FRMLS_LIST_LOM-STATUS, sy-vline,
  WA_FRMLS_LIST_LOM-STATUSCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRMLS_LIST_LOM 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_FRMLS_LIST_LOM 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_FRMLS_LIST_LOM INTO WA_FRMLS_LIST_LOM.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_LIST_LOM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_LIST_LOM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_LIST_LOM-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_LIST_LOM-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CHRI2, internal->external for field FRML_NAME
CALL FUNCTION 'CONVERSION_EXIT_CHRI2_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_LIST_LOM-FRML_NAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_LIST_LOM-FRML_NAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_SOURCE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_LIST_LOM-MATNR_SOURCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_LIST_LOM-MATNR_SOURCE.
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_FRMLS_LIST_LOM_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
RECNMST TYPE STRING,
RECNROOT TYPE STRING,
AENNR TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
LINEMODE TYPE STRING,
LOCKMODE TYPE STRING,
STATUS TYPE STRING,
STATUSCODE TYPE STRING,
MATNR TYPE STRING,
COMPTGT TYPE STRING,
COMPTGT_ERR_FLG TYPE STRING,
OPLOW TYPE STRING,
COMPLOW TYPE STRING,
OPUP TYPE STRING,
COMPUPP TYPE STRING,
UNIT TYPE STRING,
EXCVAL TYPE STRING,
ADDVAL TYPE STRING,
COMPTGT_FLT TYPE STRING,
COMPLOW_FLT TYPE STRING,
COMPUPP_FLT TYPE STRING,
OVR_FACTOR TYPE STRING,
FLG_1_N_MAT TYPE STRING,
DEF_EXPL_FLG TYPE STRING,
FRML_NAME TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
SPART TYPE STRING,
PRDHA TYPE STRING,
VTEXT TYPE STRING,
MAKTX TYPE STRING,
MATRIX_VALUE TYPE STRING,
COMPEXPL TYPE STRING,
MATNR_SOURCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLS_LIST_LOM_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_FRMLS_LIST_LOM_STR-MANDT sy-vline 
WA_FRMLS_LIST_LOM_STR-RECN sy-vline 
WA_FRMLS_LIST_LOM_STR-RECNMST sy-vline 
WA_FRMLS_LIST_LOM_STR-RECNROOT sy-vline 
WA_FRMLS_LIST_LOM_STR-AENNR sy-vline 
WA_FRMLS_LIST_LOM_STR-VALFR sy-vline 
WA_FRMLS_LIST_LOM_STR-VALTO sy-vline 
WA_FRMLS_LIST_LOM_STR-LINEMODE sy-vline 
WA_FRMLS_LIST_LOM_STR-LOCKMODE sy-vline 
WA_FRMLS_LIST_LOM_STR-STATUS sy-vline 
WA_FRMLS_LIST_LOM_STR-STATUSCODE sy-vline 
WA_FRMLS_LIST_LOM_STR-MATNR sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPTGT sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPTGT_ERR_FLG sy-vline 
WA_FRMLS_LIST_LOM_STR-OPLOW sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPLOW sy-vline 
WA_FRMLS_LIST_LOM_STR-OPUP sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPUPP sy-vline 
WA_FRMLS_LIST_LOM_STR-UNIT sy-vline 
WA_FRMLS_LIST_LOM_STR-EXCVAL sy-vline 
WA_FRMLS_LIST_LOM_STR-ADDVAL sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPTGT_FLT sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPLOW_FLT sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPUPP_FLT sy-vline 
WA_FRMLS_LIST_LOM_STR-OVR_FACTOR sy-vline 
WA_FRMLS_LIST_LOM_STR-FLG_1_N_MAT sy-vline 
WA_FRMLS_LIST_LOM_STR-DEF_EXPL_FLG sy-vline 
WA_FRMLS_LIST_LOM_STR-FRML_NAME sy-vline 
WA_FRMLS_LIST_LOM_STR-MTART sy-vline 
WA_FRMLS_LIST_LOM_STR-MATKL sy-vline 
WA_FRMLS_LIST_LOM_STR-SPART sy-vline 
WA_FRMLS_LIST_LOM_STR-PRDHA sy-vline 
WA_FRMLS_LIST_LOM_STR-VTEXT sy-vline 
WA_FRMLS_LIST_LOM_STR-MAKTX sy-vline 
WA_FRMLS_LIST_LOM_STR-MATRIX_VALUE sy-vline 
WA_FRMLS_LIST_LOM_STR-COMPEXPL sy-vline 
WA_FRMLS_LIST_LOM_STR-MATNR_SOURCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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