ABAP Select data from SAP table ISU2A_OPER_HIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU2A_OPER_HIST 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 ISU2A_OPER_HIST. 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 ISU2A_OPER_HIST 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_ISU2A_OPER_HIST TYPE STANDARD TABLE OF ISU2A_OPER_HIST,
      WA_ISU2A_OPER_HIST TYPE ISU2A_OPER_HIST,
      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: <ISU2A_OPER_HIST> TYPE ISU2A_OPER_HIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU2A_OPER_HIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU2A_OPER_HIST
  INTO TABLE IT_ISU2A_OPER_HIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU2A_OPER_HIST
*  INTO TABLE @DATA(IT_ISU2A_OPER_HIST2).
*--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_ISU2A_OPER_HIST INDEX 1 INTO DATA(WA_ISU2A_OPER_HIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU2A_OPER_HIST ASSIGNING <ISU2A_OPER_HIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU2A_OPER_HIST>-OPLFDNR = 1.
<ISU2A_OPER_HIST>-AB = 1.
<ISU2A_OPER_HIST>-BIS = 1.
<ISU2A_OPER_HIST>-KONZBEFR = 1.
<ISU2A_OPER_HIST>-LFDNR_IVB = 1.

ENDLOOP.

LOOP AT IT_ISU2A_OPER_HIST INTO WA_ISU2A_OPER_HIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU2A_OPER_HIST-QNT_NEW, sy-vline,
  WA_ISU2A_OPER_HIST-QNT_OLD, sy-vline,
  WA_ISU2A_OPER_HIST-STRING1, sy-vline,
  WA_ISU2A_OPER_HIST-STRING2, sy-vline,
  WA_ISU2A_OPER_HIST-STRING3, sy-vline,
  WA_ISU2A_OPER_HIST-STRING4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU2A_OPER_HIST 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_ISU2A_OPER_HIST 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_ISU2A_OPER_HIST INTO WA_ISU2A_OPER_HIST.


*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 KONZVER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_OPER_HIST-KONZVER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_OPER_HIST-KONZVER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field UMRECHKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_OPER_HIST-UMRECHKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_OPER_HIST-UMRECHKURS.
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_ISU2A_OPER_HIST_STR, 
OPLFDNR TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
KONZBEFR TYPE STRING,
LFDNR_IVB TYPE STRING,
QNT_NEW TYPE STRING,
QNT_OLD TYPE STRING,
STRING1 TYPE STRING,
STRING2 TYPE STRING,
STRING3 TYPE STRING,
STRING4 TYPE STRING,
QNT_LONG TYPE STRING,
ZEITANT TYPE STRING,
TIMTYPZA TYPE STRING,
TCNUMTOR TYPE STRING,
TCDENOMTOR TYPE STRING,
TIMTYPQUOT TYPE STRING,
SPERRUNG TYPE STRING,
SAISON TYPE STRING,
WDHFAKT TYPE STRING,
CONSUMPTION TYPE STRING,
ADDAMOUNT TYPE STRING,
TIMBASIS TYPE STRING,
TIMTYP TYPE STRING,
LEUCHTNR TYPE STRING,
CONTSHARE TYPE STRING,
ORGAB TYPE STRING,
ORGBIS TYPE STRING,
KONZVER TYPE STRING,
NETTOFRMD TYPE STRING,
WAERSF TYPE STRING,
UMRECHDAT TYPE STRING,
UMRECHKURS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU2A_OPER_HIST_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_ISU2A_OPER_HIST_STR-OPLFDNR sy-vline 
WA_ISU2A_OPER_HIST_STR-AB sy-vline 
WA_ISU2A_OPER_HIST_STR-BIS sy-vline 
WA_ISU2A_OPER_HIST_STR-KONZBEFR sy-vline 
WA_ISU2A_OPER_HIST_STR-LFDNR_IVB sy-vline 
WA_ISU2A_OPER_HIST_STR-QNT_NEW sy-vline 
WA_ISU2A_OPER_HIST_STR-QNT_OLD sy-vline 
WA_ISU2A_OPER_HIST_STR-STRING1 sy-vline 
WA_ISU2A_OPER_HIST_STR-STRING2 sy-vline 
WA_ISU2A_OPER_HIST_STR-STRING3 sy-vline 
WA_ISU2A_OPER_HIST_STR-STRING4 sy-vline 
WA_ISU2A_OPER_HIST_STR-QNT_LONG sy-vline 
WA_ISU2A_OPER_HIST_STR-ZEITANT sy-vline 
WA_ISU2A_OPER_HIST_STR-TIMTYPZA sy-vline 
WA_ISU2A_OPER_HIST_STR-TCNUMTOR sy-vline 
WA_ISU2A_OPER_HIST_STR-TCDENOMTOR sy-vline 
WA_ISU2A_OPER_HIST_STR-TIMTYPQUOT sy-vline 
WA_ISU2A_OPER_HIST_STR-SPERRUNG sy-vline 
WA_ISU2A_OPER_HIST_STR-SAISON sy-vline 
WA_ISU2A_OPER_HIST_STR-WDHFAKT sy-vline 
WA_ISU2A_OPER_HIST_STR-CONSUMPTION sy-vline 
WA_ISU2A_OPER_HIST_STR-ADDAMOUNT sy-vline 
WA_ISU2A_OPER_HIST_STR-TIMBASIS sy-vline 
WA_ISU2A_OPER_HIST_STR-TIMTYP sy-vline 
WA_ISU2A_OPER_HIST_STR-LEUCHTNR sy-vline 
WA_ISU2A_OPER_HIST_STR-CONTSHARE sy-vline 
WA_ISU2A_OPER_HIST_STR-ORGAB sy-vline 
WA_ISU2A_OPER_HIST_STR-ORGBIS sy-vline 
WA_ISU2A_OPER_HIST_STR-KONZVER sy-vline 
WA_ISU2A_OPER_HIST_STR-NETTOFRMD sy-vline 
WA_ISU2A_OPER_HIST_STR-WAERSF sy-vline 
WA_ISU2A_OPER_HIST_STR-UMRECHDAT sy-vline 
WA_ISU2A_OPER_HIST_STR-UMRECHKURS sy-vline      INTO ld_text SEPARATED BY SPACE.

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