ABAP Select data from SAP table LDPS_PRT_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LDPS_PRT_DATA
*  INTO TABLE @DATA(IT_LDPS_PRT_DATA2).
*--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_LDPS_PRT_DATA INDEX 1 INTO DATA(WA_LDPS_PRT_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LDPS_PRT_DATA>-DATUV = 1.
<LDPS_PRT_DATA>-AENNR = 1.
<LDPS_PRT_DATA>-DATUI = 1.
<LDPS_PRT_DATA>-USERI = 1.
<LDPS_PRT_DATA>-DATUC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LDPS_PRT_DATA-USERC, sy-vline,
  WA_LDPS_PRT_DATA-PSNFH, sy-vline,
  WA_LDPS_PRT_DATA-STEUF, sy-vline,
  WA_LDPS_PRT_DATA-MGEINH, sy-vline,
  WA_LDPS_PRT_DATA-MGVGW, sy-vline,
  WA_LDPS_PRT_DATA-EWEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LDPS_PRT_DATA 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_LDPS_PRT_DATA 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_LDPS_PRT_DATA INTO WA_LDPS_PRT_DATA.


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

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

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

*Conversion exit FHMAR, internal->external for field FHMAR
CALL FUNCTION 'CONVERSION_EXIT_FHMAR_OUTPUT'
  EXPORTING
    input =                      WA_LDPS_PRT_DATA-FHMAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDPS_PRT_DATA-FHMAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_LDPS_PRT_DATA-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDPS_PRT_DATA-VORNR.
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_LDPS_PRT_DATA_STR, 
DATUV TYPE STRING,
AENNR TYPE STRING,
DATUI TYPE STRING,
USERI TYPE STRING,
DATUC TYPE STRING,
USERC TYPE STRING,
PSNFH TYPE STRING,
STEUF TYPE STRING,
MGEINH TYPE STRING,
MGVGW TYPE STRING,
EWEINH TYPE STRING,
EWVGW TYPE STRING,
TXTZ1 TYPE STRING,
FHMAR TYPE STRING,
FHMNR TYPE STRING,
FHWRK TYPE STRING,
MATNR TYPE STRING,
SFHNR TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
EQUNR TYPE STRING,
FHKTX TYPE STRING,
BASEH TYPE STRING,
MEINS TYPE STRING,
STOWK TYPE STRING,
STORT TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
VORNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LDPS_PRT_DATA_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_LDPS_PRT_DATA_STR-DATUV sy-vline 
WA_LDPS_PRT_DATA_STR-AENNR sy-vline 
WA_LDPS_PRT_DATA_STR-DATUI sy-vline 
WA_LDPS_PRT_DATA_STR-USERI sy-vline 
WA_LDPS_PRT_DATA_STR-DATUC sy-vline 
WA_LDPS_PRT_DATA_STR-USERC sy-vline 
WA_LDPS_PRT_DATA_STR-PSNFH sy-vline 
WA_LDPS_PRT_DATA_STR-STEUF sy-vline 
WA_LDPS_PRT_DATA_STR-MGEINH sy-vline 
WA_LDPS_PRT_DATA_STR-MGVGW sy-vline 
WA_LDPS_PRT_DATA_STR-EWEINH sy-vline 
WA_LDPS_PRT_DATA_STR-EWVGW sy-vline 
WA_LDPS_PRT_DATA_STR-TXTZ1 sy-vline 
WA_LDPS_PRT_DATA_STR-FHMAR sy-vline 
WA_LDPS_PRT_DATA_STR-FHMNR sy-vline 
WA_LDPS_PRT_DATA_STR-FHWRK sy-vline 
WA_LDPS_PRT_DATA_STR-MATNR sy-vline 
WA_LDPS_PRT_DATA_STR-SFHNR sy-vline 
WA_LDPS_PRT_DATA_STR-DOKAR sy-vline 
WA_LDPS_PRT_DATA_STR-DOKNR sy-vline 
WA_LDPS_PRT_DATA_STR-DOKTL sy-vline 
WA_LDPS_PRT_DATA_STR-DOKVR sy-vline 
WA_LDPS_PRT_DATA_STR-EQUNR sy-vline 
WA_LDPS_PRT_DATA_STR-FHKTX sy-vline 
WA_LDPS_PRT_DATA_STR-BASEH sy-vline 
WA_LDPS_PRT_DATA_STR-MEINS sy-vline 
WA_LDPS_PRT_DATA_STR-STOWK sy-vline 
WA_LDPS_PRT_DATA_STR-STORT sy-vline 
WA_LDPS_PRT_DATA_STR-DATUB sy-vline 
WA_LDPS_PRT_DATA_STR-AENNR_AUS sy-vline 
WA_LDPS_PRT_DATA_STR-VORNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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