ABAP Select data from SAP table /SAPAPO/CDPS_FSEL_MATERIAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/CDPS_FSEL_MATERIAL 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 /SAPAPO/CDPS_FSEL_MATERIAL. 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 /SAPAPO/CDPS_FSEL_MATERIAL 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_/SAPAPO/CDPS_FSEL_MATERIAL TYPE STANDARD TABLE OF /SAPAPO/CDPS_FSEL_MATERIAL,
      WA_/SAPAPO/CDPS_FSEL_MATERIAL TYPE /SAPAPO/CDPS_FSEL_MATERIAL,
      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: </SAPAPO/CDPS_FSEL_MATERIAL> TYPE /SAPAPO/CDPS_FSEL_MATERIAL.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/CDPS_FSEL_MATERIAL
  INTO TABLE IT_/SAPAPO/CDPS_FSEL_MATERIAL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CDPS_FSEL_MATERIAL
*  INTO TABLE @DATA(IT_/SAPAPO/CDPS_FSEL_MATERIAL2).
*--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_/SAPAPO/CDPS_FSEL_MATERIAL INDEX 1 INTO DATA(WA_/SAPAPO/CDPS_FSEL_MATERIAL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/CDPS_FSEL_MATERIAL ASSIGNING </SAPAPO/CDPS_FSEL_MATERIAL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CDPS_FSEL_MATERIAL>-MATNR = 1.
</SAPAPO/CDPS_FSEL_MATERIAL>-MAKTX = 1.
</SAPAPO/CDPS_FSEL_MATERIAL>-MEINS = 1.
</SAPAPO/CDPS_FSEL_MATERIAL>-DISST = 1.
</SAPAPO/CDPS_FSEL_MATERIAL>-BRGEW = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/CDPS_FSEL_MATERIAL INTO WA_/SAPAPO/CDPS_FSEL_MATERIAL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CDPS_FSEL_MATERIAL-GEWEI, sy-vline,
  WA_/SAPAPO/CDPS_FSEL_MATERIAL-VOLUM, sy-vline,
  WA_/SAPAPO/CDPS_FSEL_MATERIAL-VOLEH, sy-vline,
  WA_/SAPAPO/CDPS_FSEL_MATERIAL-COMPL, sy-vline,
  WA_/SAPAPO/CDPS_FSEL_MATERIAL-MATKL, sy-vline,
  WA_/SAPAPO/CDPS_FSEL_MATERIAL-ATT01, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CDPS_FSEL_MATERIAL 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_/SAPAPO/CDPS_FSEL_MATERIAL 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_/SAPAPO/CDPS_FSEL_MATERIAL INTO WA_/SAPAPO/CDPS_FSEL_MATERIAL.


*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_/SAPAPO/CDPS_FSEL_MATERIAL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CDPS_FSEL_MATERIAL-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CDPS_FSEL_MATERIAL-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CDPS_FSEL_MATERIAL-VOLEH.
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_/SAPAPO/CDPS_FSEL_MATERIAL_STR, 
MATNR TYPE STRING,
MAKTX TYPE STRING,
MEINS TYPE STRING,
DISST TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
COMPL TYPE STRING,
MATKL TYPE STRING,
ATT01 TYPE STRING,
ATT02 TYPE STRING,
ATT03 TYPE STRING,
ATT04 TYPE STRING,
ATT05 TYPE STRING,
PLANNER_PPS TYPE STRING,
MTVFP TYPE STRING,
KDMATID TYPE STRING,
EKGRP TYPE STRING,
PRIO TYPE STRING,
VEGRP TYPE STRING,
AT101 TYPE STRING,
AT102 TYPE STRING,
AT103 TYPE STRING,
AT104 TYPE STRING,
AT105 TYPE STRING,
LOCNO TYPE STRING,
LOCTXT TYPE STRING,
TZONE TYPE STRING,
BESKZ TYPE STRING,
SSEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CDPS_FSEL_MATERIAL_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_/SAPAPO/CDPS_FSEL_MATERIAL_STR-MATNR sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-MAKTX sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-MEINS sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-DISST sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-BRGEW sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-GEWEI sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-VOLUM sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-VOLEH sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-COMPL sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-MATKL sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-ATT01 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-ATT02 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-ATT03 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-ATT04 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-ATT05 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-PLANNER_PPS sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-MTVFP sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-KDMATID sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-EKGRP sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-PRIO sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-VEGRP sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-AT101 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-AT102 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-AT103 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-AT104 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-AT105 sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-LOCNO sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-LOCTXT sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-TZONE sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-BESKZ sy-vline 
WA_/SAPAPO/CDPS_FSEL_MATERIAL_STR-SSEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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