ABAP Select data from SAP table CSENTITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSENTITEMS
*  INTO TABLE @DATA(IT_CSENTITEMS2).
*--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_CSENTITEMS INDEX 1 INTO DATA(WA_CSENTITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSENTITEMS>-MANDT = 1.
<CSENTITEMS>-BANKACCOUNTCHANGEREQUEST = 1.
<CSENTITEMS>-BANKACCOUNTACTIONTEXT = 1.
<CSENTITEMS>-BANKACCOUNTACTION = 1.
<CSENTITEMS>-BANKACCOUNTREQSTATUSTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSENTITEMS-BANKACCOUNTCHANGEREQUESTSTATUS, sy-vline,
  WA_CSENTITEMS-BANKACCOUNTCHANGEREQUESTSTEP, sy-vline,
  WA_CSENTITEMS-BANKACCTCHANGEREQHEADINGTEXT, sy-vline,
  WA_CSENTITEMS-BANKACCTCHANGEREQUESTDUEDATE, sy-vline,
  WA_CSENTITEMS-CREATIONDATE, sy-vline,
  WA_CSENTITEMS-LASTCHANGEDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSENTITEMS 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_CSENTITEMS 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_CSENTITEMS INTO WA_CSENTITEMS.


*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_CSENTITEMS_STR, 
MANDT TYPE STRING,
BANKACCOUNTCHANGEREQUEST TYPE STRING,
BANKACCOUNTACTIONTEXT TYPE STRING,
BANKACCOUNTACTION TYPE STRING,
BANKACCOUNTREQSTATUSTEXT TYPE STRING,
BANKACCOUNTCHANGEREQUESTSTATUS TYPE STRING,
BANKACCOUNTCHANGEREQUESTSTEP TYPE STRING,
BANKACCTCHANGEREQHEADINGTEXT TYPE STRING,
BANKACCTCHANGEREQUESTDUEDATE TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDATE TYPE STRING,
LASTCHANGEDBYUSERFULLNAME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSENTITEMS_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_CSENTITEMS_STR-MANDT sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTCHANGEREQUEST sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTACTIONTEXT sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTACTION sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTREQSTATUSTEXT sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTCHANGEREQUESTSTATUS sy-vline 
WA_CSENTITEMS_STR-BANKACCOUNTCHANGEREQUESTSTEP sy-vline 
WA_CSENTITEMS_STR-BANKACCTCHANGEREQHEADINGTEXT sy-vline 
WA_CSENTITEMS_STR-BANKACCTCHANGEREQUESTDUEDATE sy-vline 
WA_CSENTITEMS_STR-CREATIONDATE sy-vline 
WA_CSENTITEMS_STR-LASTCHANGEDATE sy-vline 
WA_CSENTITEMS_STR-LASTCHANGEDBYUSERFULLNAME sy-vline 
WA_CSENTITEMS_STR-LASTCHANGEDBYUSER sy-vline 
WA_CSENTITEMS_STR-NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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