ABAP Select data from SAP table TJYCIC_MSD_OLST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TJYCIC_MSD_OLST
*  INTO TABLE @DATA(IT_TJYCIC_MSD_OLST2).
*--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_TJYCIC_MSD_OLST INDEX 1 INTO DATA(WA_TJYCIC_MSD_OLST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TJYCIC_MSD_OLST>-MANDT = 1.
<TJYCIC_MSD_OLST>-PROFILE = 1.
<TJYCIC_MSD_OLST>-VKORG = 1.
<TJYCIC_MSD_OLST>-VTWEG = 1.
<TJYCIC_MSD_OLST>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TJYCIC_MSD_OLST-PERIOD_FROM, sy-vline,
  WA_TJYCIC_MSD_OLST-PERIOD_TO, sy-vline,
  WA_TJYCIC_MSD_OLST-XAUTO_REFRESH, sy-vline,
  WA_TJYCIC_MSD_OLST-VARIANT_SAVEMODE, sy-vline,
  WA_TJYCIC_MSD_OLST-DEFAULT_VARIANT, sy-vline,
  WA_TJYCIC_MSD_OLST-XLIST_EXPAND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TJYCIC_MSD_OLST 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_TJYCIC_MSD_OLST 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_TJYCIC_MSD_OLST INTO WA_TJYCIC_MSD_OLST.


*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 PROFILE_WS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJYCIC_MSD_OLST-PROFILE_WS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJYCIC_MSD_OLST-PROFILE_WS.
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_TJYCIC_MSD_OLST_STR, 
MANDT TYPE STRING,
PROFILE TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
PERIOD_FROM TYPE STRING,
PERIOD_TO TYPE STRING,
XAUTO_REFRESH TYPE STRING,
VARIANT_SAVEMODE TYPE STRING,
DEFAULT_VARIANT TYPE STRING,
XLIST_EXPAND TYPE STRING,
PROFILE_WS TYPE STRING,
LAYOUT_CHOICE TYPE STRING,
XRO_AG TYPE STRING,
XRO_WE TYPE STRING,
XRO_RE TYPE STRING,
XRO_RG TYPE STRING,
XRO_VM TYPE STRING,
XRO_VSG TYPE STRING,
ENQUEUE_WAIT TYPE STRING,
ORDER_TYPES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TJYCIC_MSD_OLST_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_TJYCIC_MSD_OLST_STR-MANDT sy-vline 
WA_TJYCIC_MSD_OLST_STR-PROFILE sy-vline 
WA_TJYCIC_MSD_OLST_STR-VKORG sy-vline 
WA_TJYCIC_MSD_OLST_STR-VTWEG sy-vline 
WA_TJYCIC_MSD_OLST_STR-SPART sy-vline 
WA_TJYCIC_MSD_OLST_STR-PERIOD_FROM sy-vline 
WA_TJYCIC_MSD_OLST_STR-PERIOD_TO sy-vline 
WA_TJYCIC_MSD_OLST_STR-XAUTO_REFRESH sy-vline 
WA_TJYCIC_MSD_OLST_STR-VARIANT_SAVEMODE sy-vline 
WA_TJYCIC_MSD_OLST_STR-DEFAULT_VARIANT sy-vline 
WA_TJYCIC_MSD_OLST_STR-XLIST_EXPAND sy-vline 
WA_TJYCIC_MSD_OLST_STR-PROFILE_WS sy-vline 
WA_TJYCIC_MSD_OLST_STR-LAYOUT_CHOICE sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_AG sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_WE sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_RE sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_RG sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_VM sy-vline 
WA_TJYCIC_MSD_OLST_STR-XRO_VSG sy-vline 
WA_TJYCIC_MSD_OLST_STR-ENQUEUE_WAIT sy-vline 
WA_TJYCIC_MSD_OLST_STR-ORDER_TYPES sy-vline      INTO ld_text SEPARATED BY SPACE.

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