ABAP Select data from SAP table PDC31 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PDC31 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 PDC31. 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 PDC31 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_PDC31 TYPE STANDARD TABLE OF PDC31,
      WA_PDC31 TYPE PDC31,
      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: <PDC31> TYPE PDC31.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PDC31.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PDC31
  INTO TABLE IT_PDC31.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PDC31
*  INTO TABLE @DATA(IT_PDC312).
*--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_PDC31 INDEX 1 INTO DATA(WA_PDC312).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PDC31 ASSIGNING <PDC31>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PDC31>-SRCSYS = 1.
<PDC31>-BUKRS = 1.
<PDC31>-KOKRS = 1.
<PDC31>-KOSTL = 1.
<PDC31>-AUFNR = 1.

ENDLOOP.

LOOP AT IT_PDC31 INTO WA_PDC31.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PDC31-APLFL, sy-vline,
  WA_PDC31-VORNR, sy-vline,
  WA_PDC31-UVORN, sy-vline,
  WA_PDC31-SBUKR, sy-vline,
  WA_PDC31-SKOST, sy-vline,
  WA_PDC31-RUECK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PDC31 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_PDC31 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_PDC31 INTO WA_PDC31.


*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 SRCSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-SRCSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-SRCSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-APLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-APLFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKOST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-SKOST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-SKOST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-GRANT_NBR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_PDC31-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PDC31-FIPEX.
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_PDC31_STR, 
SRCSYS TYPE STRING,
BUKRS TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
APLFL TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
SBUKR TYPE STRING,
SKOST TYPE STRING,
RUECK TYPE STRING,
SPLIT TYPE STRING,
KAPAR TYPE STRING,
WERKS TYPE STRING,
ARBPL TYPE STRING,
GSBER TYPE STRING,
LTLST TYPE STRING,
KSTRG TYPE STRING,
POSID TYPE STRING,
NPLNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PRZNR TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
SGSBR TYPE STRING,
SGTXT TYPE STRING,
DART TYPE STRING,
UDART TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
FIPOS TYPE STRING,
FIPEX TYPE STRING,
BUDGET_PD TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
AUFKZ TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
WTART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PDC31_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_PDC31_STR-SRCSYS sy-vline 
WA_PDC31_STR-BUKRS sy-vline 
WA_PDC31_STR-KOKRS sy-vline 
WA_PDC31_STR-KOSTL sy-vline 
WA_PDC31_STR-AUFNR sy-vline 
WA_PDC31_STR-APLFL sy-vline 
WA_PDC31_STR-VORNR sy-vline 
WA_PDC31_STR-UVORN sy-vline 
WA_PDC31_STR-SBUKR sy-vline 
WA_PDC31_STR-SKOST sy-vline 
WA_PDC31_STR-RUECK sy-vline 
WA_PDC31_STR-SPLIT sy-vline 
WA_PDC31_STR-KAPAR sy-vline 
WA_PDC31_STR-WERKS sy-vline 
WA_PDC31_STR-ARBPL sy-vline 
WA_PDC31_STR-GSBER sy-vline 
WA_PDC31_STR-LTLST sy-vline 
WA_PDC31_STR-KSTRG sy-vline 
WA_PDC31_STR-POSID sy-vline 
WA_PDC31_STR-NPLNR sy-vline 
WA_PDC31_STR-KDAUF sy-vline 
WA_PDC31_STR-KDPOS sy-vline 
WA_PDC31_STR-PRZNR sy-vline 
WA_PDC31_STR-FISTL sy-vline 
WA_PDC31_STR-GEBER sy-vline 
WA_PDC31_STR-SGSBR sy-vline 
WA_PDC31_STR-SGTXT sy-vline 
WA_PDC31_STR-DART sy-vline 
WA_PDC31_STR-UDART sy-vline 
WA_PDC31_STR-FKBER sy-vline 
WA_PDC31_STR-GRANT_NBR sy-vline 
WA_PDC31_STR-FIPOS sy-vline 
WA_PDC31_STR-FIPEX sy-vline 
WA_PDC31_STR-BUDGET_PD sy-vline 
WA_PDC31_STR-TRFGR sy-vline 
WA_PDC31_STR-TRFST sy-vline 
WA_PDC31_STR-PRAKN sy-vline 
WA_PDC31_STR-PRAKZ sy-vline 
WA_PDC31_STR-OTYPE sy-vline 
WA_PDC31_STR-PLANS sy-vline 
WA_PDC31_STR-AUFKZ sy-vline 
WA_PDC31_STR-BWGRL sy-vline 
WA_PDC31_STR-WAERS sy-vline 
WA_PDC31_STR-WTART sy-vline      INTO ld_text SEPARATED BY SPACE.

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