ABAP Select data from SAP table CASE_NO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CASE_NO
*  INTO TABLE @DATA(IT_CASE_NO2).
*--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_CASE_NO INDEX 1 INTO DATA(WA_CASE_NO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CASE_NO>-ACTIVITY = 1.
<CASE_NO>-OBJECTNAME = 1.
<CASE_NO>-OBJECTTYPE = 1.
<CASE_NO>-SEQU_NO = 1.
<CASE_NO>-ERROR_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CASE_NO-TCODE, sy-vline,
  WA_CASE_NO-MESS_NUM, sy-vline,
  WA_CASE_NO-MESS_TYPE, sy-vline,
  WA_CASE_NO-MESS_ID, sy-vline,
  WA_CASE_NO-MESS_VAR1, sy-vline,
  WA_CASE_NO-MESS_VAR2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CASE_NO 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_CASE_NO 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_CASE_NO INTO WA_CASE_NO.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CASE_NO_STR, 
ACTIVITY TYPE STRING,
OBJECTNAME TYPE STRING,
OBJECTTYPE TYPE STRING,
SEQU_NO TYPE STRING,
ERROR_NO TYPE STRING,
TCODE TYPE STRING,
MESS_NUM TYPE STRING,
MESS_TYPE TYPE STRING,
MESS_ID TYPE STRING,
MESS_VAR1 TYPE STRING,
MESS_VAR2 TYPE STRING,
MESS_VAR3 TYPE STRING,
MESS_VAR4 TYPE STRING,
IS_EXCEPT TYPE STRING,
VERIFIED TYPE STRING,
DOCU TYPE STRING,
ACTIVATE TYPE STRING,
ACT_VERIF TYPE STRING,
LOCK_DATA TYPE STRING,
BCS_RELEV TYPE STRING,
IMG_RELEV TYPE STRING,
OBJ_RELEV TYPE STRING,
TAB_RELEV TYPE STRING,
FLD_RELEV TYPE STRING,
TABLENAME TYPE STRING,
TABLETYPE TYPE STRING,
FIELDNAME TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CASE_NO_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_CASE_NO_STR-ACTIVITY sy-vline 
WA_CASE_NO_STR-OBJECTNAME sy-vline 
WA_CASE_NO_STR-OBJECTTYPE sy-vline 
WA_CASE_NO_STR-SEQU_NO sy-vline 
WA_CASE_NO_STR-ERROR_NO sy-vline 
WA_CASE_NO_STR-TCODE sy-vline 
WA_CASE_NO_STR-MESS_NUM sy-vline 
WA_CASE_NO_STR-MESS_TYPE sy-vline 
WA_CASE_NO_STR-MESS_ID sy-vline 
WA_CASE_NO_STR-MESS_VAR1 sy-vline 
WA_CASE_NO_STR-MESS_VAR2 sy-vline 
WA_CASE_NO_STR-MESS_VAR3 sy-vline 
WA_CASE_NO_STR-MESS_VAR4 sy-vline 
WA_CASE_NO_STR-IS_EXCEPT sy-vline 
WA_CASE_NO_STR-VERIFIED sy-vline 
WA_CASE_NO_STR-DOCU sy-vline 
WA_CASE_NO_STR-ACTIVATE sy-vline 
WA_CASE_NO_STR-ACT_VERIF sy-vline 
WA_CASE_NO_STR-LOCK_DATA sy-vline 
WA_CASE_NO_STR-BCS_RELEV sy-vline 
WA_CASE_NO_STR-IMG_RELEV sy-vline 
WA_CASE_NO_STR-OBJ_RELEV sy-vline 
WA_CASE_NO_STR-TAB_RELEV sy-vline 
WA_CASE_NO_STR-FLD_RELEV sy-vline 
WA_CASE_NO_STR-TABLENAME sy-vline 
WA_CASE_NO_STR-TABLETYPE sy-vline 
WA_CASE_NO_STR-FIELDNAME sy-vline 
WA_CASE_NO_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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