ABAP Select data from SAP table ESH_L_ICMCASE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_ICMCASE
*  INTO TABLE @DATA(IT_ESH_L_ICMCASE2).
*--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_ESH_L_ICMCASE INDEX 1 INTO DATA(WA_ESH_L_ICMCASE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_ICMCASE>-MANDT = 1.
<ESH_L_ICMCASE>-INVGCSMCASEID = 1.
<ESH_L_ICMCASE>-CASETYPENAME = 1.
<ESH_L_ICMCASE>-FILEDESCRIPTION = 1.
<ESH_L_ICMCASE>-FILENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_ICMCASE-INVGCSMCASETITLE, sy-vline,
  WA_ESH_L_ICMCASE-INVGCSMCASETYPE, sy-vline,
  WA_ESH_L_ICMCASE-INVGCSMCASEUUID, sy-vline,
  WA_ESH_L_ICMCASE-INVGCSMCATEGORYDESC, sy-vline,
  WA_ESH_L_ICMCASE-INVGCSMPROCESSFORCASETYPE, sy-vline,
  WA_ESH_L_ICMCASE-INVGCSMSECURITYLEVEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_ICMCASE 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_ESH_L_ICMCASE 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_ESH_L_ICMCASE INTO WA_ESH_L_ICMCASE.


*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 INVGCSMCASEID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_ICMCASE-INVGCSMCASEID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_ICMCASE-INVGCSMCASEID.
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_ESH_L_ICMCASE_STR, 
MANDT TYPE STRING,
INVGCSMCASEID TYPE STRING,
CASETYPENAME TYPE STRING,
FILEDESCRIPTION TYPE STRING,
FILENAME TYPE STRING,
INVGCSMCASETITLE TYPE STRING,
INVGCSMCASETYPE TYPE STRING,
INVGCSMCASEUUID TYPE STRING,
INVGCSMCATEGORYDESC TYPE STRING,
INVGCSMPROCESSFORCASETYPE TYPE STRING,
INVGCSMSECURITYLEVEL TYPE STRING,
INVGCSMSECURITYLVLDESC TYPE STRING,
LASTNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
RELATIONNOTE TYPE STRING,
PLAINLONGTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_ICMCASE_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_ESH_L_ICMCASE_STR-MANDT sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMCASEID sy-vline 
WA_ESH_L_ICMCASE_STR-CASETYPENAME sy-vline 
WA_ESH_L_ICMCASE_STR-FILEDESCRIPTION sy-vline 
WA_ESH_L_ICMCASE_STR-FILENAME sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMCASETITLE sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMCASETYPE sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMCASEUUID sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMCATEGORYDESC sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMPROCESSFORCASETYPE sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMSECURITYLEVEL sy-vline 
WA_ESH_L_ICMCASE_STR-INVGCSMSECURITYLVLDESC sy-vline 
WA_ESH_L_ICMCASE_STR-LASTNAME sy-vline 
WA_ESH_L_ICMCASE_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_ESH_L_ICMCASE_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_ESH_L_ICMCASE_STR-RELATIONNOTE sy-vline 
WA_ESH_L_ICMCASE_STR-PLAINLONGTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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