ABAP Select data from SAP table GLPCC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GLPCC
*  INTO TABLE @DATA(IT_GLPCC2).
*--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_GLPCC INDEX 1 INTO DATA(WA_GLPCC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GLPCC>-MANDT = 1.
<GLPCC>-OBJNR = 1.
<GLPCC>-RACCT = 1.
<GLPCC>-HRKFT = 1.
<GLPCC>-EPRCTR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GLPCC-ACTIV, sy-vline,
  WA_GLPCC-AFABE, sy-vline,
  WA_GLPCC-OCLNT, sy-vline,
  WA_GLPCC-LOGSYS, sy-vline,
  WA_GLPCC-VERSA, sy-vline,
  WA_GLPCC-KOKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GLPCC 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_GLPCC 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_GLPCC INTO WA_GLPCC.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field REP_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_GLPCC-REP_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GLPCC-REP_MATNR.
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_GLPCC_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
RACCT TYPE STRING,
HRKFT TYPE STRING,
EPRCTR TYPE STRING,
ACTIV TYPE STRING,
AFABE TYPE STRING,
OCLNT TYPE STRING,
LOGSYS TYPE STRING,
VERSA TYPE STRING,
KOKRS TYPE STRING,
RASSC TYPE STRING,
STAGR TYPE STRING,
WERKS TYPE STRING,
REP_MATNR TYPE STRING,
RMVCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GLPCC_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_GLPCC_STR-MANDT sy-vline 
WA_GLPCC_STR-OBJNR sy-vline 
WA_GLPCC_STR-RACCT sy-vline 
WA_GLPCC_STR-HRKFT sy-vline 
WA_GLPCC_STR-EPRCTR sy-vline 
WA_GLPCC_STR-ACTIV sy-vline 
WA_GLPCC_STR-AFABE sy-vline 
WA_GLPCC_STR-OCLNT sy-vline 
WA_GLPCC_STR-LOGSYS sy-vline 
WA_GLPCC_STR-VERSA sy-vline 
WA_GLPCC_STR-KOKRS sy-vline 
WA_GLPCC_STR-RASSC sy-vline 
WA_GLPCC_STR-STAGR sy-vline 
WA_GLPCC_STR-WERKS sy-vline 
WA_GLPCC_STR-REP_MATNR sy-vline 
WA_GLPCC_STR-RMVCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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