ABAP Select data from SAP table ISJP_INV_DOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISJP_INV_DOC
*  INTO TABLE @DATA(IT_ISJP_INV_DOC2).
*--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_ISJP_INV_DOC INDEX 1 INTO DATA(WA_ISJP_INV_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISJP_INV_DOC>-BUKRS = 1.
<ISJP_INV_DOC>-BELNR = 1.
<ISJP_INV_DOC>-GJAHR = 1.
<ISJP_INV_DOC>-BUZEI = 1.
<ISJP_INV_DOC>-BLART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISJP_INV_DOC-BSCHL, sy-vline,
  WA_ISJP_INV_DOC-BLDAT, sy-vline,
  WA_ISJP_INV_DOC-BUDAT, sy-vline,
  WA_ISJP_INV_DOC-ZFBDT, sy-vline,
  WA_ISJP_INV_DOC-KOART, sy-vline,
  WA_ISJP_INV_DOC-XBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISJP_INV_DOC 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_ISJP_INV_DOC 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_ISJP_INV_DOC INTO WA_ISJP_INV_DOC.


*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_ISJP_INV_DOC-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISJP_INV_DOC-BELNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISJP_INV_DOC-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISJP_INV_DOC-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field LFA1_KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISJP_INV_DOC-LFA1_KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISJP_INV_DOC-LFA1_KUNNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field INVSUMRECIP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISJP_INV_DOC-INVSUMRECIP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISJP_INV_DOC-INVSUMRECIP.
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_ISJP_INV_DOC_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BLART TYPE STRING,
BSCHL TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
ZFBDT TYPE STRING,
KOART TYPE STRING,
XBLNR TYPE STRING,
AUGBL TYPE STRING,
VBELN TYPE STRING,
MATNR TYPE STRING,
FKIMG TYPE STRING,
MEINS TYPE STRING,
FBUDA TYPE STRING,
AUGDT TYPE STRING,
UMSKZ TYPE STRING,
UMSKS TYPE STRING,
MWSKZ TYPE STRING,
XAUTO TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
REBZT TYPE STRING,
MWSK1 TYPE STRING,
MWSK2 TYPE STRING,
MWSK3 TYPE STRING,
STBLG TYPE STRING,
LFA1_KUNNR TYPE STRING,
UPDSTAT TYPE STRING,
PINR TYPE STRING,
INVSUMPAYER TYPE STRING,
PIGRUNIT TYPE STRING,
MINR TYPE STRING,
INVSUMRECIP TYPE STRING,
CLOSDATE TYPE STRING,
NETDT TYPE STRING,
GRUNIT TYPE STRING,
NOTINCL TYPE STRING,
MIBLOCK TYPE STRING,
INVSEP TYPE STRING,
INVSUMREL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISJP_INV_DOC_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_ISJP_INV_DOC_STR-BUKRS sy-vline 
WA_ISJP_INV_DOC_STR-BELNR sy-vline 
WA_ISJP_INV_DOC_STR-GJAHR sy-vline 
WA_ISJP_INV_DOC_STR-BUZEI sy-vline 
WA_ISJP_INV_DOC_STR-BLART sy-vline 
WA_ISJP_INV_DOC_STR-BSCHL sy-vline 
WA_ISJP_INV_DOC_STR-BLDAT sy-vline 
WA_ISJP_INV_DOC_STR-BUDAT sy-vline 
WA_ISJP_INV_DOC_STR-ZFBDT sy-vline 
WA_ISJP_INV_DOC_STR-KOART sy-vline 
WA_ISJP_INV_DOC_STR-XBLNR sy-vline 
WA_ISJP_INV_DOC_STR-AUGBL sy-vline 
WA_ISJP_INV_DOC_STR-VBELN sy-vline 
WA_ISJP_INV_DOC_STR-MATNR sy-vline 
WA_ISJP_INV_DOC_STR-FKIMG sy-vline 
WA_ISJP_INV_DOC_STR-MEINS sy-vline 
WA_ISJP_INV_DOC_STR-FBUDA sy-vline 
WA_ISJP_INV_DOC_STR-AUGDT sy-vline 
WA_ISJP_INV_DOC_STR-UMSKZ sy-vline 
WA_ISJP_INV_DOC_STR-UMSKS sy-vline 
WA_ISJP_INV_DOC_STR-MWSKZ sy-vline 
WA_ISJP_INV_DOC_STR-XAUTO sy-vline 
WA_ISJP_INV_DOC_STR-KUNNR sy-vline 
WA_ISJP_INV_DOC_STR-LIFNR sy-vline 
WA_ISJP_INV_DOC_STR-REBZT sy-vline 
WA_ISJP_INV_DOC_STR-MWSK1 sy-vline 
WA_ISJP_INV_DOC_STR-MWSK2 sy-vline 
WA_ISJP_INV_DOC_STR-MWSK3 sy-vline 
WA_ISJP_INV_DOC_STR-STBLG sy-vline 
WA_ISJP_INV_DOC_STR-LFA1_KUNNR sy-vline 
WA_ISJP_INV_DOC_STR-UPDSTAT sy-vline 
WA_ISJP_INV_DOC_STR-PINR sy-vline 
WA_ISJP_INV_DOC_STR-INVSUMPAYER sy-vline 
WA_ISJP_INV_DOC_STR-PIGRUNIT sy-vline 
WA_ISJP_INV_DOC_STR-MINR sy-vline 
WA_ISJP_INV_DOC_STR-INVSUMRECIP sy-vline 
WA_ISJP_INV_DOC_STR-CLOSDATE sy-vline 
WA_ISJP_INV_DOC_STR-NETDT sy-vline 
WA_ISJP_INV_DOC_STR-GRUNIT sy-vline 
WA_ISJP_INV_DOC_STR-NOTINCL sy-vline 
WA_ISJP_INV_DOC_STR-MIBLOCK sy-vline 
WA_ISJP_INV_DOC_STR-INVSEP sy-vline 
WA_ISJP_INV_DOC_STR-INVSUMREL sy-vline      INTO ld_text SEPARATED BY SPACE.

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