ABAP Select data from SAP table ESH_L_COST_CGRU 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_COST_CGRU 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_COST_CGRU. 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_COST_CGRU 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_COST_CGRU TYPE STANDARD TABLE OF ESH_L_COST_CGRU,
      WA_ESH_L_COST_CGRU TYPE ESH_L_COST_CGRU,
      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_COST_CGRU> TYPE ESH_L_COST_CGRU.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_COST_CGRU
*  INTO TABLE @DATA(IT_ESH_L_COST_CGRU2).
*--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_COST_CGRU INDEX 1 INTO DATA(WA_ESH_L_COST_CGRU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_COST_CGRU>-MANDT = 1.
<ESH_L_COST_CGRU>-SETCLASS = 1.
<ESH_L_COST_CGRU>-SUBCLASS = 1.
<ESH_L_COST_CGRU>-SETNAME = 1.
<ESH_L_COST_CGRU>-SETTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_COST_CGRU-XDYNAMIC, sy-vline,
  WA_ESH_L_COST_CGRU-AUTHGR, sy-vline,
  WA_ESH_L_COST_CGRU-XUNIQ, sy-vline,
  WA_ESH_L_COST_CGRU-RVALUE, sy-vline,
  WA_ESH_L_COST_CGRU-CREUSER, sy-vline,
  WA_ESH_L_COST_CGRU-CREDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_COST_CGRU 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_COST_CGRU 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_COST_CGRU INTO WA_ESH_L_COST_CGRU.


*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 ISOLA, internal->external for field SET_OLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_COST_CGRU-SET_OLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_COST_CGRU-SET_OLANGU.
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_COST_CGRU_STR, 
MANDT TYPE STRING,
SETCLASS TYPE STRING,
SUBCLASS TYPE STRING,
SETNAME TYPE STRING,
SETTYPE TYPE STRING,
XDYNAMIC TYPE STRING,
AUTHGR TYPE STRING,
XUNIQ TYPE STRING,
RVALUE TYPE STRING,
CREUSER TYPE STRING,
CREDATE TYPE STRING,
CRETIME TYPE STRING,
UPDUSER TYPE STRING,
UPDDATE TYPE STRING,
UPDTIME TYPE STRING,
SAPRL TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
ROLLNAME TYPE STRING,
SET_OLANGU TYPE STRING,
NO_RWSHEADER TYPE STRING,
NO_RWSLINE TYPE STRING,
NO_SETLINET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_COST_CGRU_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_COST_CGRU_STR-MANDT sy-vline 
WA_ESH_L_COST_CGRU_STR-SETCLASS sy-vline 
WA_ESH_L_COST_CGRU_STR-SUBCLASS sy-vline 
WA_ESH_L_COST_CGRU_STR-SETNAME sy-vline 
WA_ESH_L_COST_CGRU_STR-SETTYPE sy-vline 
WA_ESH_L_COST_CGRU_STR-XDYNAMIC sy-vline 
WA_ESH_L_COST_CGRU_STR-AUTHGR sy-vline 
WA_ESH_L_COST_CGRU_STR-XUNIQ sy-vline 
WA_ESH_L_COST_CGRU_STR-RVALUE sy-vline 
WA_ESH_L_COST_CGRU_STR-CREUSER sy-vline 
WA_ESH_L_COST_CGRU_STR-CREDATE sy-vline 
WA_ESH_L_COST_CGRU_STR-CRETIME sy-vline 
WA_ESH_L_COST_CGRU_STR-UPDUSER sy-vline 
WA_ESH_L_COST_CGRU_STR-UPDDATE sy-vline 
WA_ESH_L_COST_CGRU_STR-UPDTIME sy-vline 
WA_ESH_L_COST_CGRU_STR-SAPRL sy-vline 
WA_ESH_L_COST_CGRU_STR-TABNAME sy-vline 
WA_ESH_L_COST_CGRU_STR-FIELDNAME sy-vline 
WA_ESH_L_COST_CGRU_STR-ROLLNAME sy-vline 
WA_ESH_L_COST_CGRU_STR-SET_OLANGU sy-vline 
WA_ESH_L_COST_CGRU_STR-NO_RWSHEADER sy-vline 
WA_ESH_L_COST_CGRU_STR-NO_RWSLINE sy-vline 
WA_ESH_L_COST_CGRU_STR-NO_SETLINET sy-vline      INTO ld_text SEPARATED BY SPACE.

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