ABAP Select data from SAP table GMA_ACE_PSDOCITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMA_ACE_PSDOCITEMS
*  INTO TABLE @DATA(IT_GMA_ACE_PSDOCITEMS2).
*--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_GMA_ACE_PSDOCITEMS INDEX 1 INTO DATA(WA_GMA_ACE_PSDOCITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GMA_ACE_PSDOCITEMS>-MANDT = 1.
<GMA_ACE_PSDOCITEMS>-COMP = 1.
<GMA_ACE_PSDOCITEMS>-BUKRS = 1.
<GMA_ACE_PSDOCITEMS>-GJAHR = 1.
<GMA_ACE_PSDOCITEMS>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GMA_ACE_PSDOCITEMS-SUBID, sy-vline,
  WA_GMA_ACE_PSDOCITEMS-ACRTYPE, sy-vline,
  WA_GMA_ACE_PSDOCITEMS-ACCRULE, sy-vline,
  WA_GMA_ACE_PSDOCITEMS-DOCNR, sy-vline,
  WA_GMA_ACE_PSDOCITEMS-PARTNER, sy-vline,
  WA_GMA_ACE_PSDOCITEMS-GRANT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GMA_ACE_PSDOCITEMS 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_GMA_ACE_PSDOCITEMS 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_GMA_ACE_PSDOCITEMS INTO WA_GMA_ACE_PSDOCITEMS.


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

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

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

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

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

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

*Conversion exit AU152, internal->external for field VALCUM
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_GMA_ACE_PSDOCITEMS-VALCUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSDOCITEMS-VALCUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU152, internal->external for field VALTBP
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_GMA_ACE_PSDOCITEMS-VALTBP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSDOCITEMS-VALTBP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GMA_ACE_PSDOCITEMS-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSDOCITEMS-AWSYS.
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_GMA_ACE_PSDOCITEMS_STR, 
MANDT TYPE STRING,
COMP TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
OBJID TYPE STRING,
SUBID TYPE STRING,
ACRTYPE TYPE STRING,
ACCRULE TYPE STRING,
DOCNR TYPE STRING,
PARTNER TYPE STRING,
GRANT_TYPE TYPE STRING,
GMGRANT TYPE STRING,
REF_KEY TYPE STRING,
OBJSTATUS TYPE STRING,
UNAME TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
DEACTDATE TYPE STRING,
REF_SUBKEY TYPE STRING,
STATUS TYPE STRING,
FIRSTYEAR TYPE STRING,
LASTYEAR TYPE STRING,
VALCUM TYPE STRING,
VALTBP TYPE STRING,
CURRENCY TYPE STRING,
TRANSTYPE TYPE STRING,
EFFDATE TYPE STRING,
PODATE TYPE STRING,
POPER TYPE STRING,
POYEAR TYPE STRING,
RUNID TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
REVERSAL_DOC TYPE STRING,
REVERSED_DOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMA_ACE_PSDOCITEMS_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_GMA_ACE_PSDOCITEMS_STR-MANDT sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-COMP sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-BUKRS sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-GJAHR sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-OBJID sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-SUBID sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-ACRTYPE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-ACCRULE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-DOCNR sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-PARTNER sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-GRANT_TYPE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-GMGRANT sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-REF_KEY sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-OBJSTATUS sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-UNAME sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-CPUDT sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-CPUTM sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-DEACTDATE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-REF_SUBKEY sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-STATUS sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-FIRSTYEAR sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-LASTYEAR sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-VALCUM sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-VALTBP sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-CURRENCY sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-TRANSTYPE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-EFFDATE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-PODATE sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-POPER sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-POYEAR sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-RUNID sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-AWTYP sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-AWKEY sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-AWSYS sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-REVERSAL_DOC sy-vline 
WA_GMA_ACE_PSDOCITEMS_STR-REVERSED_DOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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