ABAP Select data from SAP table DOC_LINE_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DOC_LINE_ALV
*  INTO TABLE @DATA(IT_DOC_LINE_ALV2).
*--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_DOC_LINE_ALV INDEX 1 INTO DATA(WA_DOC_LINE_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DOC_LINE_ALV>-SELKEY = 1.
<DOC_LINE_ALV>-MANDT = 1.
<DOC_LINE_ALV>-BUKRS = 1.
<DOC_LINE_ALV>-BELNR = 1.
<DOC_LINE_ALV>-GJAHR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DOC_LINE_ALV-BUZEI, sy-vline,
  WA_DOC_LINE_ALV-BSCHL, sy-vline,
  WA_DOC_LINE_ALV-UMSKZ, sy-vline,
  WA_DOC_LINE_ALV-UMSKS, sy-vline,
  WA_DOC_LINE_ALV-KOART, sy-vline,
  WA_DOC_LINE_ALV-HKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DOC_LINE_ALV 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_DOC_LINE_ALV 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_DOC_LINE_ALV INTO WA_DOC_LINE_ALV.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-ANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-IMKEY.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-PS_PSP_PNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-FIPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-DMBE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DOC_LINE_ALV-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DOC_LINE_ALV-GRANT_NBR.
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_DOC_LINE_ALV_STR, 
SELKEY TYPE STRING,
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BSCHL TYPE STRING,
UMSKZ TYPE STRING,
UMSKS TYPE STRING,
KOART TYPE STRING,
HKONT TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
GSBER TYPE STRING,
PARGB TYPE STRING,
PRCTR TYPE STRING,
PPRCTR TYPE STRING,
AUFNR TYPE STRING,
IMKEY TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
KOSTL TYPE STRING,
KSTRG TYPE STRING,
NPLNR TYPE STRING,
APLZL TYPE STRING,
AUFPL TYPE STRING,
PAOBJNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
VBUND TYPE STRING,
WERKS TYPE STRING,
FIPOS TYPE STRING,
FISTL TYPE STRING,
GEBER TYPE STRING,
WRBTR TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
SHKZG TYPE STRING,
MWSKZ TYPE STRING,
VALUT TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
TAX_COUNTRY TYPE STRING,
FKBER_LONG TYPE STRING,
GRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DOC_LINE_ALV_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_DOC_LINE_ALV_STR-SELKEY sy-vline 
WA_DOC_LINE_ALV_STR-MANDT sy-vline 
WA_DOC_LINE_ALV_STR-BUKRS sy-vline 
WA_DOC_LINE_ALV_STR-BELNR sy-vline 
WA_DOC_LINE_ALV_STR-GJAHR sy-vline 
WA_DOC_LINE_ALV_STR-BUZEI sy-vline 
WA_DOC_LINE_ALV_STR-BSCHL sy-vline 
WA_DOC_LINE_ALV_STR-UMSKZ sy-vline 
WA_DOC_LINE_ALV_STR-UMSKS sy-vline 
WA_DOC_LINE_ALV_STR-KOART sy-vline 
WA_DOC_LINE_ALV_STR-HKONT sy-vline 
WA_DOC_LINE_ALV_STR-KUNNR sy-vline 
WA_DOC_LINE_ALV_STR-LIFNR sy-vline 
WA_DOC_LINE_ALV_STR-ANLN1 sy-vline 
WA_DOC_LINE_ALV_STR-ANLN2 sy-vline 
WA_DOC_LINE_ALV_STR-GSBER sy-vline 
WA_DOC_LINE_ALV_STR-PARGB sy-vline 
WA_DOC_LINE_ALV_STR-PRCTR sy-vline 
WA_DOC_LINE_ALV_STR-PPRCTR sy-vline 
WA_DOC_LINE_ALV_STR-AUFNR sy-vline 
WA_DOC_LINE_ALV_STR-IMKEY sy-vline 
WA_DOC_LINE_ALV_STR-KDAUF sy-vline 
WA_DOC_LINE_ALV_STR-KDPOS sy-vline 
WA_DOC_LINE_ALV_STR-KOSTL sy-vline 
WA_DOC_LINE_ALV_STR-KSTRG sy-vline 
WA_DOC_LINE_ALV_STR-NPLNR sy-vline 
WA_DOC_LINE_ALV_STR-APLZL sy-vline 
WA_DOC_LINE_ALV_STR-AUFPL sy-vline 
WA_DOC_LINE_ALV_STR-PAOBJNR sy-vline 
WA_DOC_LINE_ALV_STR-PS_PSP_PNR sy-vline 
WA_DOC_LINE_ALV_STR-VBUND sy-vline 
WA_DOC_LINE_ALV_STR-WERKS sy-vline 
WA_DOC_LINE_ALV_STR-FIPOS sy-vline 
WA_DOC_LINE_ALV_STR-FISTL sy-vline 
WA_DOC_LINE_ALV_STR-GEBER sy-vline 
WA_DOC_LINE_ALV_STR-WRBTR sy-vline 
WA_DOC_LINE_ALV_STR-DMBTR sy-vline 
WA_DOC_LINE_ALV_STR-DMBE2 sy-vline 
WA_DOC_LINE_ALV_STR-DMBE3 sy-vline 
WA_DOC_LINE_ALV_STR-SHKZG sy-vline 
WA_DOC_LINE_ALV_STR-MWSKZ sy-vline 
WA_DOC_LINE_ALV_STR-VALUT sy-vline 
WA_DOC_LINE_ALV_STR-ZUONR sy-vline 
WA_DOC_LINE_ALV_STR-SGTXT sy-vline 
WA_DOC_LINE_ALV_STR-TAX_COUNTRY sy-vline 
WA_DOC_LINE_ALV_STR-FKBER_LONG sy-vline 
WA_DOC_LINE_ALV_STR-GRANT_NBR sy-vline 
WA_DOC_LINE_ALV_STR-BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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