ABAP Select data from SAP table ACDOC_SI_GEN 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_GEN 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_GEN. 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_GEN 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_GEN TYPE STANDARD TABLE OF ACDOC_SI_GEN,
      WA_ACDOC_SI_GEN TYPE ACDOC_SI_GEN,
      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_GEN> TYPE ACDOC_SI_GEN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACDOC_SI_GEN
*  INTO TABLE @DATA(IT_ACDOC_SI_GEN2).
*--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_GEN INDEX 1 INTO DATA(WA_ACDOC_SI_GEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACDOC_SI_GEN>-REBZG = 1.
<ACDOC_SI_GEN>-REBZJ = 1.
<ACDOC_SI_GEN>-REBZZ = 1.
<ACDOC_SI_GEN>-REBZT = 1.
<ACDOC_SI_GEN>-RBEST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACDOC_SI_GEN-EBELN_LOGSYS, sy-vline,
  WA_ACDOC_SI_GEN-EBELN, sy-vline,
  WA_ACDOC_SI_GEN-EBELP, sy-vline,
  WA_ACDOC_SI_GEN-ZEKKN, sy-vline,
  WA_ACDOC_SI_GEN-SGTXT, sy-vline,
  WA_ACDOC_SI_GEN-KDAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACDOC_SI_GEN 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_GEN 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_GEN INTO WA_ACDOC_SI_GEN.


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

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

*Conversion exit REFBT, internal->external for field RBEST
CALL FUNCTION 'CONVERSION_EXIT_REFBT_OUTPUT'
  EXPORTING
    input =                      WA_ACDOC_SI_GEN-RBEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACDOC_SI_GEN-RBEST.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ACDOC_SI_GEN-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACDOC_SI_GEN-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field COCO_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACDOC_SI_GEN-COCO_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACDOC_SI_GEN-COCO_NUM.
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_GEN_STR, 
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
REBZT TYPE STRING,
RBEST TYPE STRING,
EBELN_LOGSYS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
SGTXT TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
FBUDA TYPE STRING,
PEROP_BEG TYPE STRING,
PEROP_END TYPE STRING,
COCO_NUM TYPE STRING,
WWERT TYPE STRING,
PRCTR_DRVTN_SOURCE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACDOC_SI_GEN_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_GEN_STR-REBZG sy-vline 
WA_ACDOC_SI_GEN_STR-REBZJ sy-vline 
WA_ACDOC_SI_GEN_STR-REBZZ sy-vline 
WA_ACDOC_SI_GEN_STR-REBZT sy-vline 
WA_ACDOC_SI_GEN_STR-RBEST sy-vline 
WA_ACDOC_SI_GEN_STR-EBELN_LOGSYS sy-vline 
WA_ACDOC_SI_GEN_STR-EBELN sy-vline 
WA_ACDOC_SI_GEN_STR-EBELP sy-vline 
WA_ACDOC_SI_GEN_STR-ZEKKN sy-vline 
WA_ACDOC_SI_GEN_STR-SGTXT sy-vline 
WA_ACDOC_SI_GEN_STR-KDAUF sy-vline 
WA_ACDOC_SI_GEN_STR-KDPOS sy-vline 
WA_ACDOC_SI_GEN_STR-MATNR sy-vline 
WA_ACDOC_SI_GEN_STR-WERKS sy-vline 
WA_ACDOC_SI_GEN_STR-LIFNR sy-vline 
WA_ACDOC_SI_GEN_STR-KUNNR sy-vline 
WA_ACDOC_SI_GEN_STR-FBUDA sy-vline 
WA_ACDOC_SI_GEN_STR-PEROP_BEG sy-vline 
WA_ACDOC_SI_GEN_STR-PEROP_END sy-vline 
WA_ACDOC_SI_GEN_STR-COCO_NUM sy-vline 
WA_ACDOC_SI_GEN_STR-WWERT sy-vline 
WA_ACDOC_SI_GEN_STR-PRCTR_DRVTN_SOURCE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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