ABAP Select data from SAP table FRMLS_IOT_AGGR_DESCR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FRMLS_IOT_AGGR_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 FRMLS_IOT_AGGR_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 FRMLS_IOT_AGGR_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_FRMLS_IOT_AGGR_DESCR TYPE STANDARD TABLE OF FRMLS_IOT_AGGR_DESCR,
      WA_FRMLS_IOT_AGGR_DESCR TYPE FRMLS_IOT_AGGR_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: <FRMLS_IOT_AGGR_DESCR> TYPE FRMLS_IOT_AGGR_DESCR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLS_IOT_AGGR_DESCR
*  INTO TABLE @DATA(IT_FRMLS_IOT_AGGR_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_FRMLS_IOT_AGGR_DESCR INDEX 1 INTO DATA(WA_FRMLS_IOT_AGGR_DESCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRMLS_IOT_AGGR_DESCR>-LINEMOD = 1.
<FRMLS_IOT_AGGR_DESCR>-RECN = 1.
<FRMLS_IOT_AGGR_DESCR>-RECNMST = 1.
<FRMLS_IOT_AGGR_DESCR>-RECNROOT = 1.
<FRMLS_IOT_AGGR_DESCR>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRMLS_IOT_AGGR_DESCR-STAGE, sy-vline,
  WA_FRMLS_IOT_AGGR_DESCR-OPERATION, sy-vline,
  WA_FRMLS_IOT_AGGR_DESCR-ACTION, sy-vline,
  WA_FRMLS_IOT_AGGR_DESCR-MATNR, sy-vline,
  WA_FRMLS_IOT_AGGR_DESCR-MAKTX, sy-vline,
  WA_FRMLS_IOT_AGGR_DESCR-SUBID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRMLS_IOT_AGGR_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_FRMLS_IOT_AGGR_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_FRMLS_IOT_AGGR_DESCR INTO WA_FRMLS_IOT_AGGR_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.

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

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

*Conversion exit SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_IOT_AGGR_DESCR-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_IOT_AGGR_DESCR-SUBID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field FRML_RECNROOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_IOT_AGGR_DESCR-FRML_RECNROOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_IOT_AGGR_DESCR-FRML_RECNROOT.
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_IOT_AGGR_DESCR_STR, 
LINEMOD TYPE STRING,
RECN TYPE STRING,
RECNMST TYPE STRING,
RECNROOT TYPE STRING,
POSNR TYPE STRING,
STAGE TYPE STRING,
OPERATION TYPE STRING,
ACTION TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
SUBID TYPE STRING,
IDENT TYPE STRING,
ROLE TYPE STRING,
ROLENAME TYPE STRING,
COMPTGT TYPE STRING,
UNIT TYPE STRING,
QUAN_% TYPE STRING,
AGGR_QUAN TYPE STRING,
AGGR_FLT TYPE STRING,
AGGR_UNIT TYPE STRING,
AGGR_QUAN_% TYPE STRING,
AGGR_QUAN_%_FLT TYPE STRING,
FLG_OUT TYPE STRING,
COLOR TYPE STRING,
ITEM_DESCR_TEXT TYPE STRING,
STREAM_FLG TYPE STRING,
STREAM_ID TYPE STRING,
PO_FLG TYPE STRING,
EXCVAL TYPE STRING,
SUBID_RECNROOT TYPE STRING,
FRML_RECNROOT TYPE STRING,
IDENT_RECNROOT TYPE STRING,
UNIT_STEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLS_IOT_AGGR_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_FRMLS_IOT_AGGR_DESCR_STR-LINEMOD sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-RECN sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-RECNMST sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-RECNROOT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-POSNR sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-STAGE sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-OPERATION sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-ACTION sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-MATNR sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-MAKTX sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-SUBID sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-IDENT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-ROLE sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-ROLENAME sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-COMPTGT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-UNIT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-QUAN_% sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-AGGR_QUAN sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-AGGR_FLT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-AGGR_UNIT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-AGGR_QUAN_% sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-AGGR_QUAN_%_FLT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-FLG_OUT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-COLOR sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-ITEM_DESCR_TEXT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-STREAM_FLG sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-STREAM_ID sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-PO_FLG sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-EXCVAL sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-SUBID_RECNROOT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-FRML_RECNROOT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-IDENT_RECNROOT sy-vline 
WA_FRMLS_IOT_AGGR_DESCR_STR-UNIT_STEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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