ABAP Select data from SAP table PMMO_MDRS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMMO_MDRS
*  INTO TABLE @DATA(IT_PMMO_MDRS2).
*--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_PMMO_MDRS INDEX 1 INTO DATA(WA_PMMO_MDRS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMMO_MDRS>-AUFNR = 1.
<PMMO_MDRS>-AUFPL = 1.
<PMMO_MDRS>-BANFN = 1.
<PMMO_MDRS>-BAUGR = 1.
<PMMO_MDRS>-BDART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMMO_MDRS-BDMNG, sy-vline,
  WA_PMMO_MDRS-BDTER, sy-vline,
  WA_PMMO_MDRS-BNFPO, sy-vline,
  WA_PMMO_MDRS-DBSKZ, sy-vline,
  WA_PMMO_MDRS-EBELE, sy-vline,
  WA_PMMO_MDRS-EBELN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMMO_MDRS 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_PMMO_MDRS 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_PMMO_MDRS INTO WA_PMMO_MDRS.


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

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

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

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

*Conversion exit ABPSP, internal->external for field GRPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PMMO_MDRS-GRPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMO_MDRS-GRPNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PMMO_MDRS-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMO_MDRS-PSPEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PMMO_MDRS-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMO_MDRS-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMMO_MDRS-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMMO_MDRS-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_PMMO_MDRS_STR, 
AUFNR TYPE STRING,
AUFPL TYPE STRING,
BANFN TYPE STRING,
BAUGR TYPE STRING,
BDART TYPE STRING,
BDMNG TYPE STRING,
BDTER TYPE STRING,
BNFPO TYPE STRING,
DBSKZ TYPE STRING,
EBELE TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ENMNG TYPE STRING,
GRPNR TYPE STRING,
MATNR TYPE STRING,
PLNUM TYPE STRING,
PSPEL TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
SCHGT TYPE STRING,
UMWRK TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
OBJNR TYPE STRING,
VORNR TYPE STRING,
DAUTY TYPE STRING,
APLZL TYPE STRING,
LIFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMMO_MDRS_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_PMMO_MDRS_STR-AUFNR sy-vline 
WA_PMMO_MDRS_STR-AUFPL sy-vline 
WA_PMMO_MDRS_STR-BANFN sy-vline 
WA_PMMO_MDRS_STR-BAUGR sy-vline 
WA_PMMO_MDRS_STR-BDART sy-vline 
WA_PMMO_MDRS_STR-BDMNG sy-vline 
WA_PMMO_MDRS_STR-BDTER sy-vline 
WA_PMMO_MDRS_STR-BNFPO sy-vline 
WA_PMMO_MDRS_STR-DBSKZ sy-vline 
WA_PMMO_MDRS_STR-EBELE sy-vline 
WA_PMMO_MDRS_STR-EBELN sy-vline 
WA_PMMO_MDRS_STR-EBELP sy-vline 
WA_PMMO_MDRS_STR-ENMNG sy-vline 
WA_PMMO_MDRS_STR-GRPNR sy-vline 
WA_PMMO_MDRS_STR-MATNR sy-vline 
WA_PMMO_MDRS_STR-PLNUM sy-vline 
WA_PMMO_MDRS_STR-PSPEL sy-vline 
WA_PMMO_MDRS_STR-RSNUM sy-vline 
WA_PMMO_MDRS_STR-RSPOS sy-vline 
WA_PMMO_MDRS_STR-SCHGT sy-vline 
WA_PMMO_MDRS_STR-UMWRK sy-vline 
WA_PMMO_MDRS_STR-WERKS sy-vline 
WA_PMMO_MDRS_STR-BERID sy-vline 
WA_PMMO_MDRS_STR-OBJNR sy-vline 
WA_PMMO_MDRS_STR-VORNR sy-vline 
WA_PMMO_MDRS_STR-DAUTY sy-vline 
WA_PMMO_MDRS_STR-APLZL sy-vline 
WA_PMMO_MDRS_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.