ABAP Select data from SAP table ROIISLVCKOR into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIISLVCKOR 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 ROIISLVCKOR. 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 ROIISLVCKOR 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_ROIISLVCKOR TYPE STANDARD TABLE OF ROIISLVCKOR,
      WA_ROIISLVCKOR TYPE ROIISLVCKOR,
      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: <ROIISLVCKOR> TYPE ROIISLVCKOR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIISLVCKOR
*  INTO TABLE @DATA(IT_ROIISLVCKOR2).
*--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_ROIISLVCKOR INDEX 1 INTO DATA(WA_ROIISLVCKOR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIISLVCKOR>-MANDT = 1.
<ROIISLVCKOR>-SLVNR = 1.
<ROIISLVCKOR>-SLVIND = 1.
<ROIISLVCKOR>-NRDEC = 1.
<ROIISLVCKOR>-SLVGR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIISLVCKOR-MAXDP, sy-vline,
  WA_ROIISLVCKOR-MINDP, sy-vline,
  WA_ROIISLVCKOR-UNPKZ, sy-vline,
  WA_ROIISLVCKOR-UNPPC, sy-vline,
  WA_ROIISLVCKOR-FLMAS, sy-vline,
  WA_ROIISLVCKOR-EXPCOEFF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIISLVCKOR 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_ROIISLVCKOR 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_ROIISLVCKOR INTO WA_ROIISLVCKOR.


*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 CUNIT, internal->external for field VOLUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-VOLUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-VOLUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-MASUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-MASUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LENUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-LENUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-LENUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FRTUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-FRTUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-FRTUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TIMUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-TIMUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-TIMUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TMPUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-TMPUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-TMPUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DNSUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-DNSUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-DNSUN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SPVUN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIISLVCKOR-SPVUN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIISLVCKOR-SPVUN.
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_ROIISLVCKOR_STR, 
MANDT TYPE STRING,
SLVNR TYPE STRING,
SLVIND TYPE STRING,
NRDEC TYPE STRING,
SLVGR TYPE STRING,
MAXDP TYPE STRING,
MINDP TYPE STRING,
UNPKZ TYPE STRING,
UNPPC TYPE STRING,
FLMAS TYPE STRING,
EXPCOEFF TYPE STRING,
CALFILHGT TYPE STRING,
DIPDATDIF TYPE STRING,
CALTEMP TYPE STRING,
CALDENS TYPE STRING,
CALNAME TYPE STRING,
CALDATE TYPE STRING,
MIN_FLTROOF TYPE STRING,
KAPAZ TYPE STRING,
INCH_INCREMENT TYPE STRING,
VOLUN TYPE STRING,
MASUN TYPE STRING,
LENUN TYPE STRING,
FRTUN TYPE STRING,
TIMUN TYPE STRING,
TMPUN TYPE STRING,
DNSUN TYPE STRING,
SPVUN TYPE STRING,
DNTYP TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
UPD_FLAG TYPE STRING,
MSEHTL TYPE STRING,
MSEHTV TYPE STRING,
MSEHTSV TYPE STRING,
SLVICL TYPE STRING,
SLVICV TYPE STRING,
DIPDATDIF_STR TYPE STRING,
MAXDP_STR TYPE STRING,
MINDP_STR TYPE STRING,
MIN_FLTROOF_STR TYPE STRING,
CALFILHGT_STR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIISLVCKOR_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_ROIISLVCKOR_STR-MANDT sy-vline 
WA_ROIISLVCKOR_STR-SLVNR sy-vline 
WA_ROIISLVCKOR_STR-SLVIND sy-vline 
WA_ROIISLVCKOR_STR-NRDEC sy-vline 
WA_ROIISLVCKOR_STR-SLVGR sy-vline 
WA_ROIISLVCKOR_STR-MAXDP sy-vline 
WA_ROIISLVCKOR_STR-MINDP sy-vline 
WA_ROIISLVCKOR_STR-UNPKZ sy-vline 
WA_ROIISLVCKOR_STR-UNPPC sy-vline 
WA_ROIISLVCKOR_STR-FLMAS sy-vline 
WA_ROIISLVCKOR_STR-EXPCOEFF sy-vline 
WA_ROIISLVCKOR_STR-CALFILHGT sy-vline 
WA_ROIISLVCKOR_STR-DIPDATDIF sy-vline 
WA_ROIISLVCKOR_STR-CALTEMP sy-vline 
WA_ROIISLVCKOR_STR-CALDENS sy-vline 
WA_ROIISLVCKOR_STR-CALNAME sy-vline 
WA_ROIISLVCKOR_STR-CALDATE sy-vline 
WA_ROIISLVCKOR_STR-MIN_FLTROOF sy-vline 
WA_ROIISLVCKOR_STR-KAPAZ sy-vline 
WA_ROIISLVCKOR_STR-INCH_INCREMENT sy-vline 
WA_ROIISLVCKOR_STR-VOLUN sy-vline 
WA_ROIISLVCKOR_STR-MASUN sy-vline 
WA_ROIISLVCKOR_STR-LENUN sy-vline 
WA_ROIISLVCKOR_STR-FRTUN sy-vline 
WA_ROIISLVCKOR_STR-TIMUN sy-vline 
WA_ROIISLVCKOR_STR-TMPUN sy-vline 
WA_ROIISLVCKOR_STR-DNSUN sy-vline 
WA_ROIISLVCKOR_STR-SPVUN sy-vline 
WA_ROIISLVCKOR_STR-DNTYP sy-vline 
WA_ROIISLVCKOR_STR-ERDAT sy-vline 
WA_ROIISLVCKOR_STR-ERZEIT sy-vline 
WA_ROIISLVCKOR_STR-ERNAM sy-vline 
WA_ROIISLVCKOR_STR-AEDAT sy-vline 
WA_ROIISLVCKOR_STR-AEZEIT sy-vline 
WA_ROIISLVCKOR_STR-AENAM sy-vline 
WA_ROIISLVCKOR_STR-BLOIND sy-vline 
WA_ROIISLVCKOR_STR-DELIND sy-vline 
WA_ROIISLVCKOR_STR-UPD_FLAG sy-vline 
WA_ROIISLVCKOR_STR-MSEHTL sy-vline 
WA_ROIISLVCKOR_STR-MSEHTV sy-vline 
WA_ROIISLVCKOR_STR-MSEHTSV sy-vline 
WA_ROIISLVCKOR_STR-SLVICL sy-vline 
WA_ROIISLVCKOR_STR-SLVICV sy-vline 
WA_ROIISLVCKOR_STR-DIPDATDIF_STR sy-vline 
WA_ROIISLVCKOR_STR-MAXDP_STR sy-vline 
WA_ROIISLVCKOR_STR-MINDP_STR sy-vline 
WA_ROIISLVCKOR_STR-MIN_FLTROOF_STR sy-vline 
WA_ROIISLVCKOR_STR-CALFILHGT_STR sy-vline      INTO ld_text SEPARATED BY SPACE.

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