ABAP Select data from SAP table J_1USEXTRACTD_MM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1USEXTRACTD_MM 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 J_1USEXTRACTD_MM. 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 J_1USEXTRACTD_MM 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_J_1USEXTRACTD_MM TYPE STANDARD TABLE OF J_1USEXTRACTD_MM,
      WA_J_1USEXTRACTD_MM TYPE J_1USEXTRACTD_MM,
      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: <J_1USEXTRACTD_MM> TYPE J_1USEXTRACTD_MM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1USEXTRACTD_MM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1USEXTRACTD_MM
  INTO TABLE IT_J_1USEXTRACTD_MM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1USEXTRACTD_MM
*  INTO TABLE @DATA(IT_J_1USEXTRACTD_MM2).
*--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_J_1USEXTRACTD_MM INDEX 1 INTO DATA(WA_J_1USEXTRACTD_MM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1USEXTRACTD_MM ASSIGNING <J_1USEXTRACTD_MM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1USEXTRACTD_MM>-MANDT = 1.
<J_1USEXTRACTD_MM>-ENAME = 1.
<J_1USEXTRACTD_MM>-EPOS = 1.
<J_1USEXTRACTD_MM>-PURCHASE_ORDER = 1.
<J_1USEXTRACTD_MM>-POBUZEI = 1.

ENDLOOP.

LOOP AT IT_J_1USEXTRACTD_MM INTO WA_J_1USEXTRACTD_MM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1USEXTRACTD_MM-PURCH_ORD_DATE, sy-vline,
  WA_J_1USEXTRACTD_MM-POWRBTR, sy-vline,
  WA_J_1USEXTRACTD_MM-POWAERS, sy-vline,
  WA_J_1USEXTRACTD_MM-POMENGE, sy-vline,
  WA_J_1USEXTRACTD_MM-POMEINS, sy-vline,
  WA_J_1USEXTRACTD_MM-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1USEXTRACTD_MM 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_J_1USEXTRACTD_MM 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_J_1USEXTRACTD_MM INTO WA_J_1USEXTRACTD_MM.


*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 PURCHASE_ORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-PURCHASE_ORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-PURCHASE_ORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field POWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-POWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-POWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field POMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-POMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-POMEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-PWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-PWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field GRWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-GRWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-GRWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field IMMWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-IMMWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-IMMWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field CDWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-CDWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-CDWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field IFIWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-IFIWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-IFIWRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1USEXTRACTD_MM-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1USEXTRACTD_MM-LIFNR.
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_J_1USEXTRACTD_MM_STR, 
MANDT TYPE STRING,
ENAME TYPE STRING,
EPOS TYPE STRING,
PURCHASE_ORDER TYPE STRING,
POBUZEI TYPE STRING,
PURCH_ORD_DATE TYPE STRING,
POWRBTR TYPE STRING,
POWAERS TYPE STRING,
POMENGE TYPE STRING,
POMEINS TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
PWRBTR TYPE STRING,
PWAERS TYPE STRING,
GRWRBTR TYPE STRING,
GRWAERS TYPE STRING,
IMMWRBTR TYPE STRING,
IMMWAERS TYPE STRING,
CDWRBTR TYPE STRING,
CDWAERS TYPE STRING,
IFIWRBTR TYPE STRING,
IFIWAERS TYPE STRING,
LIFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1USEXTRACTD_MM_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_J_1USEXTRACTD_MM_STR-MANDT sy-vline 
WA_J_1USEXTRACTD_MM_STR-ENAME sy-vline 
WA_J_1USEXTRACTD_MM_STR-EPOS sy-vline 
WA_J_1USEXTRACTD_MM_STR-PURCHASE_ORDER sy-vline 
WA_J_1USEXTRACTD_MM_STR-POBUZEI sy-vline 
WA_J_1USEXTRACTD_MM_STR-PURCH_ORD_DATE sy-vline 
WA_J_1USEXTRACTD_MM_STR-POWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-POWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-POMENGE sy-vline 
WA_J_1USEXTRACTD_MM_STR-POMEINS sy-vline 
WA_J_1USEXTRACTD_MM_STR-MATNR sy-vline 
WA_J_1USEXTRACTD_MM_STR-MAKTX sy-vline 
WA_J_1USEXTRACTD_MM_STR-PWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-PWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-GRWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-GRWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-IMMWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-IMMWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-CDWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-CDWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-IFIWRBTR sy-vline 
WA_J_1USEXTRACTD_MM_STR-IFIWAERS sy-vline 
WA_J_1USEXTRACTD_MM_STR-LIFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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