ABAP Select data from SAP table FRMLS_API_HDR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FRMLS_API_HDR 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_API_HDR. 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_API_HDR 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_API_HDR TYPE STANDARD TABLE OF FRMLS_API_HDR,
      WA_FRMLS_API_HDR TYPE FRMLS_API_HDR,
      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_API_HDR> TYPE FRMLS_API_HDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLS_API_HDR
*  INTO TABLE @DATA(IT_FRMLS_API_HDR2).
*--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_API_HDR INDEX 1 INTO DATA(WA_FRMLS_API_HDR2).


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

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

ENDLOOP.

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

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


*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_API_HDR-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_API_HDR-AENNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field INP_TGT_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_API_HDR-INP_TGT_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_API_HDR-INP_TGT_UNIT.
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_API_HDR_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,
FRML_NAME TYPE STRING,
DATA_SCENARIO TYPE STRING,
LOTSIZE_MIN TYPE STRING,
LOTSIZE_MAX TYPE STRING,
CONS_FLG TYPE STRING,
CRE_SEQ TYPE STRING,
CONS_UPDNAME TYPE STRING,
CONS_UPDDATE TYPE STRING,
STEXT_CONSNAME TYPE STRING,
BASE_QUAN TYPE STRING,
BASE_UNIT TYPE STRING,
INP_TGT_QTY TYPE STRING,
INP_TGT_UNIT TYPE STRING,
LAYOUT TYPE STRING,
REAC_FLG TYPE STRING,
AGGR_FLG TYPE STRING,
EVAP_FLG TYPE STRING,
ASSYNC_FLG TYPE STRING,
KEY_FIGURE_GROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLS_API_HDR_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_API_HDR_STR-MANDT sy-vline 
WA_FRMLS_API_HDR_STR-RECN sy-vline 
WA_FRMLS_API_HDR_STR-RECNMST sy-vline 
WA_FRMLS_API_HDR_STR-RECNROOT sy-vline 
WA_FRMLS_API_HDR_STR-AENNR sy-vline 
WA_FRMLS_API_HDR_STR-VALFR sy-vline 
WA_FRMLS_API_HDR_STR-VALTO sy-vline 
WA_FRMLS_API_HDR_STR-LINEMODE sy-vline 
WA_FRMLS_API_HDR_STR-LOCKMODE sy-vline 
WA_FRMLS_API_HDR_STR-STATUS sy-vline 
WA_FRMLS_API_HDR_STR-STATUSCODE sy-vline 
WA_FRMLS_API_HDR_STR-FRML_NAME sy-vline 
WA_FRMLS_API_HDR_STR-DATA_SCENARIO sy-vline 
WA_FRMLS_API_HDR_STR-LOTSIZE_MIN sy-vline 
WA_FRMLS_API_HDR_STR-LOTSIZE_MAX sy-vline 
WA_FRMLS_API_HDR_STR-CONS_FLG sy-vline 
WA_FRMLS_API_HDR_STR-CRE_SEQ sy-vline 
WA_FRMLS_API_HDR_STR-CONS_UPDNAME sy-vline 
WA_FRMLS_API_HDR_STR-CONS_UPDDATE sy-vline 
WA_FRMLS_API_HDR_STR-STEXT_CONSNAME sy-vline 
WA_FRMLS_API_HDR_STR-BASE_QUAN sy-vline 
WA_FRMLS_API_HDR_STR-BASE_UNIT sy-vline 
WA_FRMLS_API_HDR_STR-INP_TGT_QTY sy-vline 
WA_FRMLS_API_HDR_STR-INP_TGT_UNIT sy-vline 
WA_FRMLS_API_HDR_STR-LAYOUT sy-vline 
WA_FRMLS_API_HDR_STR-REAC_FLG sy-vline 
WA_FRMLS_API_HDR_STR-AGGR_FLG sy-vline 
WA_FRMLS_API_HDR_STR-EVAP_FLG sy-vline 
WA_FRMLS_API_HDR_STR-ASSYNC_FLG sy-vline 
WA_FRMLS_API_HDR_STR-KEY_FIGURE_GROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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