ABAP Select data from SAP table /SAPCE/IUHU_ISUZ2_CUST_APPEND into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPCE/IUHU_ISUZ2_CUST_APPEND 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 /SAPCE/IUHU_ISUZ2_CUST_APPEND. 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 /SAPCE/IUHU_ISUZ2_CUST_APPEND 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_/SAPCE/IUHU_ISUZ2_CUST_APPEND TYPE STANDARD TABLE OF /SAPCE/IUHU_ISUZ2_CUST_APPEND,
      WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND TYPE /SAPCE/IUHU_ISUZ2_CUST_APPEND,
      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: </SAPCE/IUHU_ISUZ2_CUST_APPEND> TYPE /SAPCE/IUHU_ISUZ2_CUST_APPEND.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPCE/IUHU_ISUZ2_CUST_APPEND.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPCE/IUHU_ISUZ2_CUST_APPEND
  INTO TABLE IT_/SAPCE/IUHU_ISUZ2_CUST_APPEND.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPCE/IUHU_ISUZ2_CUST_APPEND
*  INTO TABLE @DATA(IT_/SAPCE/IUHU_ISUZ2_CUST_APPEND2).
*--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_/SAPCE/IUHU_ISUZ2_CUST_APPEND INDEX 1 INTO DATA(WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPCE/IUHU_ISUZ2_CUST_APPEND ASSIGNING </SAPCE/IUHU_ISUZ2_CUST_APPEND>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPCE/IUHU_ISUZ2_CUST_APPEND>-ZNORECALC = 1.
</SAPCE/IUHU_ISUZ2_CUST_APPEND>-IPERVERBR = 1.
</SAPCE/IUHU_ISUZ2_CUST_APPEND>-IETTIFN = 1.
</SAPCE/IUHU_ISUZ2_CUST_APPEND>-MANDT = 1.
</SAPCE/IUHU_ISUZ2_CUST_APPEND>-ANLAGE = 1.

ENDLOOP.

LOOP AT IT_/SAPCE/IUHU_ISUZ2_CUST_APPEND INTO WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-OPERAND, sy-vline,
  WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-SAISON, sy-vline,
  WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-AB, sy-vline,
  WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-ABLFDNR, sy-vline,
  WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-BIS, sy-vline,
  WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-BELNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND 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_/SAPCE/IUHU_ISUZ2_CUST_APPEND 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_/SAPCE/IUHU_ISUZ2_CUST_APPEND INTO WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND.


*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 ANLAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-ANLAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-ANLAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-MBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND-MBELNR.
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_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR, 
ZNORECALC TYPE STRING,
IPERVERBR TYPE STRING,
IETTIFN TYPE STRING,
MANDT TYPE STRING,
ANLAGE TYPE STRING,
OPERAND TYPE STRING,
SAISON TYPE STRING,
AB TYPE STRING,
ABLFDNR TYPE STRING,
BIS TYPE STRING,
BELNR TYPE STRING,
MBELNR TYPE STRING,
MAUSZUG TYPE STRING,
ALTBIS TYPE STRING,
INAKTIV TYPE STRING,
MANAEND TYPE STRING,
TARIFART TYPE STRING,
KONDIGR TYPE STRING,
WERT1 TYPE STRING,
WERT2 TYPE STRING,
STRING1 TYPE STRING,
STRING2 TYPE STRING,
STRING3 TYPE STRING,
STRING4 TYPE STRING,
ERSATZWERT TYPE STRING,
BETRAG TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_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_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-ZNORECALC sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-IPERVERBR sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-IETTIFN sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-MANDT sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-ANLAGE sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-OPERAND sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-SAISON sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-AB sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-ABLFDNR sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-BIS sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-BELNR sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-MBELNR sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-MAUSZUG sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-ALTBIS sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-INAKTIV sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-MANAEND sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-TARIFART sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-KONDIGR sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-WERT1 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-WERT2 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-STRING1 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-STRING2 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-STRING3 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-STRING4 sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-ERSATZWERT sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-BETRAG sy-vline 
WA_/SAPCE/IUHU_ISUZ2_CUST_APPEND_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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