ABAP Select data from SAP table FRMLS_IOT_API 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_API 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_API. 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_API 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_API TYPE STANDARD TABLE OF FRMLS_IOT_API,
      WA_FRMLS_IOT_API TYPE FRMLS_IOT_API,
      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_API> TYPE FRMLS_IOT_API.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLS_IOT_API
*  INTO TABLE @DATA(IT_FRMLS_IOT_API2).
*--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_API INDEX 1 INTO DATA(WA_FRMLS_IOT_API2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRMLS_IOT_API>-LINENO = 1.
<FRMLS_IOT_API>-LINEMOD = 1.
<FRMLS_IOT_API>-MANDT = 1.
<FRMLS_IOT_API>-RECN = 1.
<FRMLS_IOT_API>-RECNMST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRMLS_IOT_API-RECNROOT, sy-vline,
  WA_FRMLS_IOT_API-RECNALGRP, sy-vline,
  WA_FRMLS_IOT_API-RECN_DATA, sy-vline,
  WA_FRMLS_IOT_API-SUBRECN, sy-vline,
  WA_FRMLS_IOT_API-ACTN, sy-vline,
  WA_FRMLS_IOT_API-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRMLS_IOT_API 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_API 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_API INTO WA_FRMLS_IOT_API.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_IOT_API-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_IOT_API-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_API-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_IOT_API-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_API-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_IOT_API-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_IOT_API_STR, 
LINENO TYPE STRING,
LINEMOD TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
RECNMST TYPE STRING,
RECNROOT TYPE STRING,
RECNALGRP TYPE STRING,
RECN_DATA TYPE STRING,
SUBRECN TYPE STRING,
ACTN TYPE STRING,
MATNR TYPE STRING,
SUBID TYPE STRING,
POSNR TYPE STRING,
ROLE TYPE STRING,
STD_ALT_FLG TYPE STRING,
FLG_ALT_EXIST TYPE STRING,
ALT_POSNR TYPE STRING,
PO_FLG 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,
DEF_EXPL_FLG TYPE STRING,
FLG_1_N_MAT TYPE STRING,
FLG_HAS_1_N_MAT TYPE STRING,
FLG_OUT TYPE STRING,
STREAM_FLG TYPE STRING,
STREAM_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLS_IOT_API_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_API_STR-LINENO sy-vline 
WA_FRMLS_IOT_API_STR-LINEMOD sy-vline 
WA_FRMLS_IOT_API_STR-MANDT sy-vline 
WA_FRMLS_IOT_API_STR-RECN sy-vline 
WA_FRMLS_IOT_API_STR-RECNMST sy-vline 
WA_FRMLS_IOT_API_STR-RECNROOT sy-vline 
WA_FRMLS_IOT_API_STR-RECNALGRP sy-vline 
WA_FRMLS_IOT_API_STR-RECN_DATA sy-vline 
WA_FRMLS_IOT_API_STR-SUBRECN sy-vline 
WA_FRMLS_IOT_API_STR-ACTN sy-vline 
WA_FRMLS_IOT_API_STR-MATNR sy-vline 
WA_FRMLS_IOT_API_STR-SUBID sy-vline 
WA_FRMLS_IOT_API_STR-POSNR sy-vline 
WA_FRMLS_IOT_API_STR-ROLE sy-vline 
WA_FRMLS_IOT_API_STR-STD_ALT_FLG sy-vline 
WA_FRMLS_IOT_API_STR-FLG_ALT_EXIST sy-vline 
WA_FRMLS_IOT_API_STR-ALT_POSNR sy-vline 
WA_FRMLS_IOT_API_STR-PO_FLG sy-vline 
WA_FRMLS_IOT_API_STR-COMPTGT sy-vline 
WA_FRMLS_IOT_API_STR-COMPTGT_ERR_FLG sy-vline 
WA_FRMLS_IOT_API_STR-OPLOW sy-vline 
WA_FRMLS_IOT_API_STR-COMPLOW sy-vline 
WA_FRMLS_IOT_API_STR-OPUP sy-vline 
WA_FRMLS_IOT_API_STR-COMPUPP sy-vline 
WA_FRMLS_IOT_API_STR-UNIT sy-vline 
WA_FRMLS_IOT_API_STR-EXCVAL sy-vline 
WA_FRMLS_IOT_API_STR-ADDVAL sy-vline 
WA_FRMLS_IOT_API_STR-COMPTGT_FLT sy-vline 
WA_FRMLS_IOT_API_STR-COMPLOW_FLT sy-vline 
WA_FRMLS_IOT_API_STR-COMPUPP_FLT sy-vline 
WA_FRMLS_IOT_API_STR-OVR_FACTOR sy-vline 
WA_FRMLS_IOT_API_STR-DEF_EXPL_FLG sy-vline 
WA_FRMLS_IOT_API_STR-FLG_1_N_MAT sy-vline 
WA_FRMLS_IOT_API_STR-FLG_HAS_1_N_MAT sy-vline 
WA_FRMLS_IOT_API_STR-FLG_OUT sy-vline 
WA_FRMLS_IOT_API_STR-STREAM_FLG sy-vline 
WA_FRMLS_IOT_API_STR-STREAM_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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