ABAP Select data from SAP table PSUPINVCDD 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 PSUPINVCDD 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 PSUPINVCDD. 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 PSUPINVCDD 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_PSUPINVCDD TYPE STANDARD TABLE OF PSUPINVCDD,
      WA_PSUPINVCDD TYPE PSUPINVCDD,
      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: <PSUPINVCDD> TYPE PSUPINVCDD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSUPINVCDD
*  INTO TABLE @DATA(IT_PSUPINVCDD2).
*--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_PSUPINVCDD INDEX 1 INTO DATA(WA_PSUPINVCDD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSUPINVCDD>-MANDT = 1.
<PSUPINVCDD>-BELNR = 1.
<PSUPINVCDD>-GJAHR = 1.
<PSUPINVCDD>-CPUDT = 1.
<PSUPINVCDD>-CPUTM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSUPINVCDD-STBLG, sy-vline,
  WA_PSUPINVCDD-STJAH, sy-vline,
  WA_PSUPINVCDD-ZTERM, sy-vline,
  WA_PSUPINVCDD-ZFBDT, sy-vline,
  WA_PSUPINVCDD-ZBD1T, sy-vline,
  WA_PSUPINVCDD-ZBD1P, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSUPINVCDD 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_PSUPINVCDD 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_PSUPINVCDD INTO WA_PSUPINVCDD.


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

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

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

*Conversion exit GJAHR, internal->external for field STJAH
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PSUPINVCDD-STJAH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSUPINVCDD-STJAH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR_RBKP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSUPINVCDD-LIFNR_RBKP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSUPINVCDD-LIFNR_RBKP.
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_PSUPINVCDD_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
STBLG TYPE STRING,
STJAH TYPE STRING,
ZTERM TYPE STRING,
ZFBDT TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2T TYPE STRING,
ZBD2P TYPE STRING,
ZBD3T TYPE STRING,
ISEOPBLOCKED TYPE STRING,
LIFNR_RBKP TYPE STRING,
EARLIESTCASHDISCOUNTDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSUPINVCDD_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_PSUPINVCDD_STR-MANDT sy-vline 
WA_PSUPINVCDD_STR-BELNR sy-vline 
WA_PSUPINVCDD_STR-GJAHR sy-vline 
WA_PSUPINVCDD_STR-CPUDT sy-vline 
WA_PSUPINVCDD_STR-CPUTM sy-vline 
WA_PSUPINVCDD_STR-STBLG sy-vline 
WA_PSUPINVCDD_STR-STJAH sy-vline 
WA_PSUPINVCDD_STR-ZTERM sy-vline 
WA_PSUPINVCDD_STR-ZFBDT sy-vline 
WA_PSUPINVCDD_STR-ZBD1T sy-vline 
WA_PSUPINVCDD_STR-ZBD1P sy-vline 
WA_PSUPINVCDD_STR-ZBD2T sy-vline 
WA_PSUPINVCDD_STR-ZBD2P sy-vline 
WA_PSUPINVCDD_STR-ZBD3T sy-vline 
WA_PSUPINVCDD_STR-ISEOPBLOCKED sy-vline 
WA_PSUPINVCDD_STR-LIFNR_RBKP sy-vline 
WA_PSUPINVCDD_STR-EARLIESTCASHDISCOUNTDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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