ABAP Select data from SAP table ACDOC_SI_GL_ACCAS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACDOC_SI_GL_ACCAS
*  INTO TABLE @DATA(IT_ACDOC_SI_GL_ACCAS2).
*--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_ACDOC_SI_GL_ACCAS INDEX 1 INTO DATA(WA_ACDOC_SI_GL_ACCAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACDOC_SI_GL_ACCAS>-RCNTR = 1.
<ACDOC_SI_GL_ACCAS>-PRCTR = 1.
<ACDOC_SI_GL_ACCAS>-RFAREA = 1.
<ACDOC_SI_GL_ACCAS>-RBUSA = 1.
<ACDOC_SI_GL_ACCAS>-KOKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACDOC_SI_GL_ACCAS-SEGMENT, sy-vline,
  WA_ACDOC_SI_GL_ACCAS-SCNTR, sy-vline,
  WA_ACDOC_SI_GL_ACCAS-PPRCTR, sy-vline,
  WA_ACDOC_SI_GL_ACCAS-SFAREA, sy-vline,
  WA_ACDOC_SI_GL_ACCAS-SBUSA, sy-vline,
  WA_ACDOC_SI_GL_ACCAS-RASSC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACDOC_SI_GL_ACCAS 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_ACDOC_SI_GL_ACCAS 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_ACDOC_SI_GL_ACCAS INTO WA_ACDOC_SI_GL_ACCAS.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PSEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACDOC_SI_GL_ACCAS-PSEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACDOC_SI_GL_ACCAS-PSEGMENT.
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_ACDOC_SI_GL_ACCAS_STR, 
RCNTR TYPE STRING,
PRCTR TYPE STRING,
RFAREA TYPE STRING,
RBUSA TYPE STRING,
KOKRS TYPE STRING,
SEGMENT TYPE STRING,
SCNTR TYPE STRING,
PPRCTR TYPE STRING,
SFAREA TYPE STRING,
SBUSA TYPE STRING,
RASSC TYPE STRING,
PSEGMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACDOC_SI_GL_ACCAS_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_ACDOC_SI_GL_ACCAS_STR-RCNTR sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-PRCTR sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-RFAREA sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-RBUSA sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-KOKRS sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-SEGMENT sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-SCNTR sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-PPRCTR sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-SFAREA sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-SBUSA sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-RASSC sy-vline 
WA_ACDOC_SI_GL_ACCAS_STR-PSEGMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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