ABAP Select data from SAP table MMPUR_ML_IA_INFERENCE_INPUT_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_ML_IA_INFERENCE_INPUT_S
*  INTO TABLE @DATA(IT_MMPUR_ML_IA_INFERENCE_INPUT_S2).
*--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_MMPUR_ML_IA_INFERENCE_INPUT_S INDEX 1 INTO DATA(WA_MMPUR_ML_IA_INFERENCE_INPUT_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_ML_IA_INFERENCE_INPUT_S>-BSART = 1.
<MMPUR_ML_IA_INFERENCE_INPUT_S>-ESTKZ = 1.
<MMPUR_ML_IA_INFERENCE_INPUT_S>-EKGRP = 1.
<MMPUR_ML_IA_INFERENCE_INPUT_S>-WERKS = 1.
<MMPUR_ML_IA_INFERENCE_INPUT_S>-PSTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_ML_IA_INFERENCE_INPUT_S-EKORG, sy-vline,
  WA_MMPUR_ML_IA_INFERENCE_INPUT_S-MATKL, sy-vline,
  WA_MMPUR_ML_IA_INFERENCE_INPUT_S-MATNR, sy-vline,
  WA_MMPUR_ML_IA_INFERENCE_INPUT_S-PRODUCTTYPE, sy-vline,
  WA_MMPUR_ML_IA_INFERENCE_INPUT_S-PREIS, sy-vline,
  WA_MMPUR_ML_IA_INFERENCE_INPUT_S-PEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_ML_IA_INFERENCE_INPUT_S 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_MMPUR_ML_IA_INFERENCE_INPUT_S 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_MMPUR_ML_IA_INFERENCE_INPUT_S INTO WA_MMPUR_ML_IA_INFERENCE_INPUT_S.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_ML_IA_INFERENCE_INPUT_S-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_ML_IA_INFERENCE_INPUT_S-BANFN.
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_MMPUR_ML_IA_INFERENCE_INPUT_S_STR, 
BSART TYPE STRING,
ESTKZ TYPE STRING,
EKGRP TYPE STRING,
WERKS TYPE STRING,
PSTYP TYPE STRING,
EKORG TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,
PRODUCTTYPE TYPE STRING,
PREIS TYPE STRING,
PEINH TYPE STRING,
KNTTP TYPE STRING,
FLIEF TYPE STRING,
KONNR TYPE STRING,
INFNR TYPE STRING,
MENGE TYPE STRING,
RLWRT TYPE STRING,
LGORT TYPE STRING,
MEINS TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
SC_CATALOGID TYPE STRING,
BANFN_IN_EBKN_EXISTS TYPE STRING,
SC_CATALOGID_EXISTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_ML_IA_INFERENCE_INPUT_S_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_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-BSART sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-ESTKZ sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-EKGRP sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-WERKS sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-PSTYP sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-EKORG sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-MATKL sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-MATNR sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-PRODUCTTYPE sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-PREIS sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-PEINH sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-KNTTP sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-FLIEF sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-KONNR sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-INFNR sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-MENGE sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-RLWRT sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-LGORT sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-MEINS sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-BANFN sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-BNFPO sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-SC_CATALOGID sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-BANFN_IN_EBKN_EXISTS sy-vline 
WA_MMPUR_ML_IA_INFERENCE_INPUT_S_STR-SC_CATALOGID_EXISTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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