ABAP Select data from SAP table GMA_ACE_PSITEMS 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_PSITEMS 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_PSITEMS. 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_PSITEMS 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_PSITEMS TYPE STANDARD TABLE OF GMA_ACE_PSITEMS,
      WA_GMA_ACE_PSITEMS TYPE GMA_ACE_PSITEMS,
      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_PSITEMS> TYPE GMA_ACE_PSITEMS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMA_ACE_PSITEMS
*  INTO TABLE @DATA(IT_GMA_ACE_PSITEMS2).
*--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_PSITEMS INDEX 1 INTO DATA(WA_GMA_ACE_PSITEMS2).


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

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

ENDLOOP.

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

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


*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_PSITEMS-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-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_PSITEMS-ACRTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-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_PSITEMS-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-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_PSITEMS-GMGRANT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-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_PSITEMS-FIRSTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-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_PSITEMS-LASTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-LASTYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit AU152, internal->external for field VALRETIRE
CALL FUNCTION 'CONVERSION_EXIT_AU152_OUTPUT'
  EXPORTING
    input =                      WA_GMA_ACE_PSITEMS-VALRETIRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMA_ACE_PSITEMS-VALRETIRE.
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_PSITEMS_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,
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,
CUMVALCAP TYPE STRING,
CUMVALACCR TYPE STRING,
VALCAP TYPE STRING,
VALACCR TYPE STRING,
VALRETIRE TYPE STRING,
LASTEFFDATE TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMA_ACE_PSITEMS_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_PSITEMS_STR-MANDT sy-vline 
WA_GMA_ACE_PSITEMS_STR-COMP sy-vline 
WA_GMA_ACE_PSITEMS_STR-BUKRS sy-vline 
WA_GMA_ACE_PSITEMS_STR-GJAHR sy-vline 
WA_GMA_ACE_PSITEMS_STR-OBJID sy-vline 
WA_GMA_ACE_PSITEMS_STR-SUBID sy-vline 
WA_GMA_ACE_PSITEMS_STR-ACRTYPE sy-vline 
WA_GMA_ACE_PSITEMS_STR-ACCRULE sy-vline 
WA_GMA_ACE_PSITEMS_STR-PARTNER sy-vline 
WA_GMA_ACE_PSITEMS_STR-GRANT_TYPE sy-vline 
WA_GMA_ACE_PSITEMS_STR-GMGRANT sy-vline 
WA_GMA_ACE_PSITEMS_STR-REF_KEY sy-vline 
WA_GMA_ACE_PSITEMS_STR-OBJSTATUS sy-vline 
WA_GMA_ACE_PSITEMS_STR-UNAME sy-vline 
WA_GMA_ACE_PSITEMS_STR-CPUDT sy-vline 
WA_GMA_ACE_PSITEMS_STR-CPUTM sy-vline 
WA_GMA_ACE_PSITEMS_STR-DEACTDATE sy-vline 
WA_GMA_ACE_PSITEMS_STR-REF_SUBKEY sy-vline 
WA_GMA_ACE_PSITEMS_STR-STATUS sy-vline 
WA_GMA_ACE_PSITEMS_STR-FIRSTYEAR sy-vline 
WA_GMA_ACE_PSITEMS_STR-LASTYEAR sy-vline 
WA_GMA_ACE_PSITEMS_STR-CUMVALCAP sy-vline 
WA_GMA_ACE_PSITEMS_STR-CUMVALACCR sy-vline 
WA_GMA_ACE_PSITEMS_STR-VALCAP sy-vline 
WA_GMA_ACE_PSITEMS_STR-VALACCR sy-vline 
WA_GMA_ACE_PSITEMS_STR-VALRETIRE sy-vline 
WA_GMA_ACE_PSITEMS_STR-LASTEFFDATE sy-vline 
WA_GMA_ACE_PSITEMS_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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