ABAP Select data from SAP table ISSR_MIG_FI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSR_MIG_FI
*  INTO TABLE @DATA(IT_ISSR_MIG_FI2).
*--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_ISSR_MIG_FI INDEX 1 INTO DATA(WA_ISSR_MIG_FI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSR_MIG_FI>-MONAT = 1.
<ISSR_MIG_FI>-STBLG = 1.
<ISSR_MIG_FI>-STJAH = 1.
<ISSR_MIG_FI>-SGTXT = 1.
<ISSR_MIG_FI>-GLVOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSR_MIG_FI-AWTYP, sy-vline,
  WA_ISSR_MIG_FI-AWKEY, sy-vline,
  WA_ISSR_MIG_FI-WAERS, sy-vline,
  WA_ISSR_MIG_FI-HWAER, sy-vline,
  WA_ISSR_MIG_FI-AWSYS, sy-vline,
  WA_ISSR_MIG_FI-STGRD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSR_MIG_FI 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_ISSR_MIG_FI 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_ISSR_MIG_FI INTO WA_ISSR_MIG_FI.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field VERTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_MIG_FI-VERTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_MIG_FI-VERTN.
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_ISSR_MIG_FI_STR, 
MONAT TYPE STRING,
STBLG TYPE STRING,
STJAH TYPE STRING,
SGTXT TYPE STRING,
GLVOR TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
AWSYS TYPE STRING,
STGRD TYPE STRING,
BUZEI TYPE STRING,
KOART TYPE STRING,
SHKZG TYPE STRING,
GSBER TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
ANBWA TYPE STRING,
SAKNR TYPE STRING,
HKONT TYPE STRING,
XBILK TYPE STRING,
GVTYP TYPE STRING,
VPTNR TYPE STRING,
VERTT TYPE STRING,
VERTN TYPE STRING,
VBEWA TYPE STRING,
DEPOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSR_MIG_FI_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_ISSR_MIG_FI_STR-MONAT sy-vline 
WA_ISSR_MIG_FI_STR-STBLG sy-vline 
WA_ISSR_MIG_FI_STR-STJAH sy-vline 
WA_ISSR_MIG_FI_STR-SGTXT sy-vline 
WA_ISSR_MIG_FI_STR-GLVOR sy-vline 
WA_ISSR_MIG_FI_STR-AWTYP sy-vline 
WA_ISSR_MIG_FI_STR-AWKEY sy-vline 
WA_ISSR_MIG_FI_STR-WAERS sy-vline 
WA_ISSR_MIG_FI_STR-HWAER sy-vline 
WA_ISSR_MIG_FI_STR-AWSYS sy-vline 
WA_ISSR_MIG_FI_STR-STGRD sy-vline 
WA_ISSR_MIG_FI_STR-BUZEI sy-vline 
WA_ISSR_MIG_FI_STR-KOART sy-vline 
WA_ISSR_MIG_FI_STR-SHKZG sy-vline 
WA_ISSR_MIG_FI_STR-GSBER sy-vline 
WA_ISSR_MIG_FI_STR-DMBTR sy-vline 
WA_ISSR_MIG_FI_STR-WRBTR sy-vline 
WA_ISSR_MIG_FI_STR-KOKRS sy-vline 
WA_ISSR_MIG_FI_STR-KOSTL sy-vline 
WA_ISSR_MIG_FI_STR-ANLN1 sy-vline 
WA_ISSR_MIG_FI_STR-ANLN2 sy-vline 
WA_ISSR_MIG_FI_STR-ANBWA sy-vline 
WA_ISSR_MIG_FI_STR-SAKNR sy-vline 
WA_ISSR_MIG_FI_STR-HKONT sy-vline 
WA_ISSR_MIG_FI_STR-XBILK sy-vline 
WA_ISSR_MIG_FI_STR-GVTYP sy-vline 
WA_ISSR_MIG_FI_STR-VPTNR sy-vline 
WA_ISSR_MIG_FI_STR-VERTT sy-vline 
WA_ISSR_MIG_FI_STR-VERTN sy-vline 
WA_ISSR_MIG_FI_STR-VBEWA sy-vline 
WA_ISSR_MIG_FI_STR-DEPOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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