ABAP Select data from SAP table LHM_ST_CASE_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LHM_ST_CASE_ATTR
*  INTO TABLE @DATA(IT_LHM_ST_CASE_ATTR2).
*--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_LHM_ST_CASE_ATTR INDEX 1 INTO DATA(WA_LHM_ST_CASE_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LHM_ST_CASE_ATTR>-COMPANY = 1.
<LHM_ST_CASE_ATTR>-PLANT = 1.
<LHM_ST_CASE_ATTR>-COSTCENTER = 1.
<LHM_ST_CASE_ATTR>-DESCRIPTION = 1.
<LHM_ST_CASE_ATTR>-LH_CREATED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LHM_ST_CASE_ATTR-LH_RESINDED, sy-vline,
  WA_LHM_ST_CASE_ATTR-LH_HOLD_CODE, sy-vline,
  WA_LHM_ST_CASE_ATTR-MATTER_ID, sy-vline,
  WA_LHM_ST_CASE_ATTR-LEGAL_CASE_KEY, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_LHM_ST_CASE_ATTR 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_LHM_ST_CASE_ATTR 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_LHM_ST_CASE_ATTR INTO WA_LHM_ST_CASE_ATTR.


*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_LHM_ST_CASE_ATTR_STR, 
COMPANY TYPE STRING,
PLANT TYPE STRING,
COSTCENTER TYPE STRING,
DESCRIPTION TYPE STRING,
LH_CREATED TYPE STRING,
LH_RESINDED TYPE STRING,
LH_HOLD_CODE TYPE STRING,
MATTER_ID TYPE STRING,
LEGAL_CASE_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LHM_ST_CASE_ATTR_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_LHM_ST_CASE_ATTR_STR-COMPANY sy-vline 
WA_LHM_ST_CASE_ATTR_STR-PLANT sy-vline 
WA_LHM_ST_CASE_ATTR_STR-COSTCENTER sy-vline 
WA_LHM_ST_CASE_ATTR_STR-DESCRIPTION sy-vline 
WA_LHM_ST_CASE_ATTR_STR-LH_CREATED sy-vline 
WA_LHM_ST_CASE_ATTR_STR-LH_RESINDED sy-vline 
WA_LHM_ST_CASE_ATTR_STR-LH_HOLD_CODE sy-vline 
WA_LHM_ST_CASE_ATTR_STR-MATTER_ID sy-vline 
WA_LHM_ST_CASE_ATTR_STR-LEGAL_CASE_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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