ABAP Select data from SAP table VISCAJROSU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VISCAJROSU
*  INTO TABLE @DATA(IT_VISCAJROSU2).
*--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_VISCAJROSU INDEX 1 INTO DATA(WA_VISCAJROSU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VISCAJROSU>-MANDT = 1.
<VISCAJROSU>-METHREFSUGUID = 1.
<VISCAJROSU>-METHREFGUID = 1.
<VISCAJROSU>-METHREFROGUID = 1.
<VISCAJROSU>-SCS_ROCN_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VISCAJROSU-SETTLGUID, sy-vline,
  WA_VISCAJROSU-SCS_SU_GUID, sy-vline,
  WA_VISCAJROSU-SUOBJNR, sy-vline,
  WA_VISCAJROSU-PFROM, sy-vline,
  WA_VISCAJROSU-PTO, sy-vline,
  WA_VISCAJROSU-SCS_PERIOD_GUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VISCAJROSU 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_VISCAJROSU 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_VISCAJROSU INTO WA_VISCAJROSU.


*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 REDAT, internal->external for field PTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VISCAJROSU-PTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCAJROSU-PTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field ACTUALPTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VISCAJROSU-ACTUALPTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCAJROSU-ACTUALPTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field MEASCHANGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VISCAJROSU-MEASCHANGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCAJROSU-MEASCHANGE.
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_VISCAJROSU_STR, 
MANDT TYPE STRING,
METHREFSUGUID TYPE STRING,
METHREFGUID TYPE STRING,
METHREFROGUID TYPE STRING,
SCS_ROCN_GUID TYPE STRING,
SETTLGUID TYPE STRING,
SCS_SU_GUID TYPE STRING,
SUOBJNR TYPE STRING,
PFROM TYPE STRING,
PTO TYPE STRING,
SCS_PERIOD_GUID TYPE STRING,
ACTUALPFROM TYPE STRING,
ACTUALPTO TYPE STRING,
CNOBJNR TYPE STRING,
AVERAGECOSTSSU TYPE STRING,
APPORTVALUERO TYPE STRING,
APPORTVALUESU TYPE STRING,
MEASAVERAGE TYPE STRING,
TENANTPARTOLD TYPE STRING,
AVERPARTICCOSTS TYPE STRING,
COSTSSETTLEMENT TYPE STRING,
LOC_KEY TYPE STRING,
HEATINGVALUEDAYS TYPE STRING,
BASE TYPE STRING,
COSTSPERYEAR TYPE STRING,
COSTSCHANGE TYPE STRING,
CHANGEPRICE TYPE STRING,
COSTSAFTERCHANGE TYPE STRING,
APPORTVALUEOLD TYPE STRING,
APPORTVALUENEW TYPE STRING,
MEASCHANGE TYPE STRING,
COSTSAPPORTCHG TYPE STRING,
TENANTPARTNEW TYPE STRING,
COSTSTENANTPART TYPE STRING,
MAXCOSTSNEW TYPE STRING,
COSTSMAXCOSTS TYPE STRING,
BASENEW TYPE STRING,
COSTSBASE TYPE STRING,
COSTSFORSU TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VISCAJROSU_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_VISCAJROSU_STR-MANDT sy-vline 
WA_VISCAJROSU_STR-METHREFSUGUID sy-vline 
WA_VISCAJROSU_STR-METHREFGUID sy-vline 
WA_VISCAJROSU_STR-METHREFROGUID sy-vline 
WA_VISCAJROSU_STR-SCS_ROCN_GUID sy-vline 
WA_VISCAJROSU_STR-SETTLGUID sy-vline 
WA_VISCAJROSU_STR-SCS_SU_GUID sy-vline 
WA_VISCAJROSU_STR-SUOBJNR sy-vline 
WA_VISCAJROSU_STR-PFROM sy-vline 
WA_VISCAJROSU_STR-PTO sy-vline 
WA_VISCAJROSU_STR-SCS_PERIOD_GUID sy-vline 
WA_VISCAJROSU_STR-ACTUALPFROM sy-vline 
WA_VISCAJROSU_STR-ACTUALPTO sy-vline 
WA_VISCAJROSU_STR-CNOBJNR sy-vline 
WA_VISCAJROSU_STR-AVERAGECOSTSSU sy-vline 
WA_VISCAJROSU_STR-APPORTVALUERO sy-vline 
WA_VISCAJROSU_STR-APPORTVALUESU sy-vline 
WA_VISCAJROSU_STR-MEASAVERAGE sy-vline 
WA_VISCAJROSU_STR-TENANTPARTOLD sy-vline 
WA_VISCAJROSU_STR-AVERPARTICCOSTS sy-vline 
WA_VISCAJROSU_STR-COSTSSETTLEMENT sy-vline 
WA_VISCAJROSU_STR-LOC_KEY sy-vline 
WA_VISCAJROSU_STR-HEATINGVALUEDAYS sy-vline 
WA_VISCAJROSU_STR-BASE sy-vline 
WA_VISCAJROSU_STR-COSTSPERYEAR sy-vline 
WA_VISCAJROSU_STR-COSTSCHANGE sy-vline 
WA_VISCAJROSU_STR-CHANGEPRICE sy-vline 
WA_VISCAJROSU_STR-COSTSAFTERCHANGE sy-vline 
WA_VISCAJROSU_STR-APPORTVALUEOLD sy-vline 
WA_VISCAJROSU_STR-APPORTVALUENEW sy-vline 
WA_VISCAJROSU_STR-MEASCHANGE sy-vline 
WA_VISCAJROSU_STR-COSTSAPPORTCHG sy-vline 
WA_VISCAJROSU_STR-TENANTPARTNEW sy-vline 
WA_VISCAJROSU_STR-COSTSTENANTPART sy-vline 
WA_VISCAJROSU_STR-MAXCOSTSNEW sy-vline 
WA_VISCAJROSU_STR-COSTSMAXCOSTS sy-vline 
WA_VISCAJROSU_STR-BASENEW sy-vline 
WA_VISCAJROSU_STR-COSTSBASE sy-vline 
WA_VISCAJROSU_STR-COSTSFORSU sy-vline 
WA_VISCAJROSU_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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