ABAP Select data from SAP table ISU17_DATA_STRUC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU17_DATA_STRUC 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 ISU17_DATA_STRUC. 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 ISU17_DATA_STRUC 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_ISU17_DATA_STRUC TYPE STANDARD TABLE OF ISU17_DATA_STRUC,
      WA_ISU17_DATA_STRUC TYPE ISU17_DATA_STRUC,
      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: <ISU17_DATA_STRUC> TYPE ISU17_DATA_STRUC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU17_DATA_STRUC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU17_DATA_STRUC
  INTO TABLE IT_ISU17_DATA_STRUC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU17_DATA_STRUC
*  INTO TABLE @DATA(IT_ISU17_DATA_STRUC2).
*--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_ISU17_DATA_STRUC INDEX 1 INTO DATA(WA_ISU17_DATA_STRUC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU17_DATA_STRUC ASSIGNING <ISU17_DATA_STRUC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU17_DATA_STRUC>-TABIX = 1.
<ISU17_DATA_STRUC>-NEW = 1.
<ISU17_DATA_STRUC>-ABLBELNR = 1.
<ISU17_DATA_STRUC>-GERNR = 1.
<ISU17_DATA_STRUC>-EQUNR = 1.

ENDLOOP.

LOOP AT IT_ISU17_DATA_STRUC INTO WA_ISU17_DATA_STRUC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU17_DATA_STRUC-ABLESGR, sy-vline,
  WA_ISU17_DATA_STRUC-ABLESER, sy-vline,
  WA_ISU17_DATA_STRUC-MAU, sy-vline,
  WA_ISU17_DATA_STRUC-ABLEINH, sy-vline,
  WA_ISU17_DATA_STRUC-SPARTE, sy-vline,
  WA_ISU17_DATA_STRUC-ANLAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU17_DATA_STRUC 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_ISU17_DATA_STRUC 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_ISU17_DATA_STRUC INTO WA_ISU17_DATA_STRUC.


*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 ABLBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU17_DATA_STRUC-ABLBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU17_DATA_STRUC-ABLBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISU17_DATA_STRUC-GERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU17_DATA_STRUC-GERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU17_DATA_STRUC-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU17_DATA_STRUC-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU17_DATA_STRUC-ANLAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU17_DATA_STRUC-ANLAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SM_AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU17_DATA_STRUC-SM_AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU17_DATA_STRUC-SM_AUFNR.
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_ISU17_DATA_STRUC_STR, 
TABIX TYPE STRING,
NEW TYPE STRING,
ABLBELNR TYPE STRING,
GERNR TYPE STRING,
EQUNR TYPE STRING,
ABLESGR TYPE STRING,
ABLESER TYPE STRING,
MAU TYPE STRING,
ABLEINH TYPE STRING,
SPARTE TYPE STRING,
ANLAGE TYPE STRING,
LEVEL TYPE STRING,
NODE_KEY TYPE STRING,
STREET TYPE STRING,
HOUSE_NUM TYPE STRING,
ANZAHL TYPE STRING,
CITY2 TYPE STRING,
ADATSOLL TYPE STRING,
SPARTE_TEXT TYPE STRING,
SM_AUFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU17_DATA_STRUC_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_ISU17_DATA_STRUC_STR-TABIX sy-vline 
WA_ISU17_DATA_STRUC_STR-NEW sy-vline 
WA_ISU17_DATA_STRUC_STR-ABLBELNR sy-vline 
WA_ISU17_DATA_STRUC_STR-GERNR sy-vline 
WA_ISU17_DATA_STRUC_STR-EQUNR sy-vline 
WA_ISU17_DATA_STRUC_STR-ABLESGR sy-vline 
WA_ISU17_DATA_STRUC_STR-ABLESER sy-vline 
WA_ISU17_DATA_STRUC_STR-MAU sy-vline 
WA_ISU17_DATA_STRUC_STR-ABLEINH sy-vline 
WA_ISU17_DATA_STRUC_STR-SPARTE sy-vline 
WA_ISU17_DATA_STRUC_STR-ANLAGE sy-vline 
WA_ISU17_DATA_STRUC_STR-LEVEL sy-vline 
WA_ISU17_DATA_STRUC_STR-NODE_KEY sy-vline 
WA_ISU17_DATA_STRUC_STR-STREET sy-vline 
WA_ISU17_DATA_STRUC_STR-HOUSE_NUM sy-vline 
WA_ISU17_DATA_STRUC_STR-ANZAHL sy-vline 
WA_ISU17_DATA_STRUC_STR-CITY2 sy-vline 
WA_ISU17_DATA_STRUC_STR-ADATSOLL sy-vline 
WA_ISU17_DATA_STRUC_STR-SPARTE_TEXT sy-vline 
WA_ISU17_DATA_STRUC_STR-SM_AUFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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