ABAP Select data from SAP table CRMCKRSFA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMCKRSFA
*  INTO TABLE @DATA(IT_CRMCKRSFA2).
*--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_CRMCKRSFA INDEX 1 INTO DATA(WA_CRMCKRSFA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMCKRSFA>-ACKLIGHT = 1.
<CRMCKRSFA>-MSGGRPID = 1.
<CRMCKRSFA>-TXTMSGGRPS = 1.
<CRMCKRSFA>-CHKMSGPRIO = 1.
<CRMCKRSFA>-CHKID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMCKRSFA-TXTCHK, sy-vline,
  WA_CRMCKRSFA-CHKMSGID, sy-vline,
  WA_CRMCKRSFA-TXTCHKMSG, sy-vline,
  WA_CRMCKRSFA-PGMID, sy-vline,
  WA_CRMCKRSFA-OBJECT, sy-vline,
  WA_CRMCKRSFA-OBJ_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMCKRSFA 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_CRMCKRSFA 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_CRMCKRSFA INTO WA_CRMCKRSFA.


*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 CRMUS, internal->external for field RESP
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCKRSFA-RESP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCKRSFA-RESP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field EMAIL
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_CRMCKRSFA-EMAIL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCKRSFA-EMAIL.
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_CRMCKRSFA_STR, 
ACKLIGHT TYPE STRING,
MSGGRPID TYPE STRING,
TXTMSGGRPS TYPE STRING,
CHKMSGPRIO TYPE STRING,
CHKID TYPE STRING,
TXTCHK TYPE STRING,
CHKMSGID TYPE STRING,
TXTCHKMSG TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
CHKSUM TYPE STRING,
POBJECT TYPE STRING,
POBJ_NAME TYPE STRING,
TXTCOMP TYPE STRING,
TXTDEVCL TYPE STRING,
DEVCLASS TYPE STRING,
COMP TYPE STRING,
COMP_SHORT TYPE STRING,
DLVUNIT TYPE STRING,
RESP TYPE STRING,
RESPKIND TYPE STRING,
RESPOBJ TYPE STRING,
RESPLCHG TYPE STRING,
RESPDCL TYPE STRING,
EXISTTADIR TYPE STRING,
EXISTDEVCL TYPE STRING,
EXISTCOMP TYPE STRING,
DELIVERY TYPE STRING,
TRLAYER TYPE STRING,
PROJECT_GUID TYPE STRING,
EMAIL TYPE STRING,
CHKRSLTNBR TYPE STRING,
CHKTSTAMP TYPE STRING,
CHKTSTAMPO TYPE STRING,
CHKSYSTEM TYPE STRING,
CHKCLIENT TYPE STRING,
CHKREL TYPE STRING,
CHKDB TYPE STRING,
CHKOS TYPE STRING,
UNICODE TYPE STRING,
ACKNOWLED TYPE STRING,
EXCEPTED TYPE STRING,
IP_SYS TYPE STRING,
IP_NUM TYPE STRING,
IP_YEAR TYPE STRING,
IP_CLASS TYPE STRING,
IP_STATUS TYPE STRING,
SRC_OSETID TYPE STRING,
SRC_RESNBR TYPE STRING,
PLATFORM TYPE STRING,
SRC_DB_PLATFORM TYPE STRING,
SRC_OS_PLATFORM TYPE STRING,
SRC_KRNL_UC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMCKRSFA_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_CRMCKRSFA_STR-ACKLIGHT sy-vline 
WA_CRMCKRSFA_STR-MSGGRPID sy-vline 
WA_CRMCKRSFA_STR-TXTMSGGRPS sy-vline 
WA_CRMCKRSFA_STR-CHKMSGPRIO sy-vline 
WA_CRMCKRSFA_STR-CHKID sy-vline 
WA_CRMCKRSFA_STR-TXTCHK sy-vline 
WA_CRMCKRSFA_STR-CHKMSGID sy-vline 
WA_CRMCKRSFA_STR-TXTCHKMSG sy-vline 
WA_CRMCKRSFA_STR-PGMID sy-vline 
WA_CRMCKRSFA_STR-OBJECT sy-vline 
WA_CRMCKRSFA_STR-OBJ_NAME sy-vline 
WA_CRMCKRSFA_STR-CHKSUM sy-vline 
WA_CRMCKRSFA_STR-POBJECT sy-vline 
WA_CRMCKRSFA_STR-POBJ_NAME sy-vline 
WA_CRMCKRSFA_STR-TXTCOMP sy-vline 
WA_CRMCKRSFA_STR-TXTDEVCL sy-vline 
WA_CRMCKRSFA_STR-DEVCLASS sy-vline 
WA_CRMCKRSFA_STR-COMP sy-vline 
WA_CRMCKRSFA_STR-COMP_SHORT sy-vline 
WA_CRMCKRSFA_STR-DLVUNIT sy-vline 
WA_CRMCKRSFA_STR-RESP sy-vline 
WA_CRMCKRSFA_STR-RESPKIND sy-vline 
WA_CRMCKRSFA_STR-RESPOBJ sy-vline 
WA_CRMCKRSFA_STR-RESPLCHG sy-vline 
WA_CRMCKRSFA_STR-RESPDCL sy-vline 
WA_CRMCKRSFA_STR-EXISTTADIR sy-vline 
WA_CRMCKRSFA_STR-EXISTDEVCL sy-vline 
WA_CRMCKRSFA_STR-EXISTCOMP sy-vline 
WA_CRMCKRSFA_STR-DELIVERY sy-vline 
WA_CRMCKRSFA_STR-TRLAYER sy-vline 
WA_CRMCKRSFA_STR-PROJECT_GUID sy-vline 
WA_CRMCKRSFA_STR-EMAIL sy-vline 
WA_CRMCKRSFA_STR-CHKRSLTNBR sy-vline 
WA_CRMCKRSFA_STR-CHKTSTAMP sy-vline 
WA_CRMCKRSFA_STR-CHKTSTAMPO sy-vline 
WA_CRMCKRSFA_STR-CHKSYSTEM sy-vline 
WA_CRMCKRSFA_STR-CHKCLIENT sy-vline 
WA_CRMCKRSFA_STR-CHKREL sy-vline 
WA_CRMCKRSFA_STR-CHKDB sy-vline 
WA_CRMCKRSFA_STR-CHKOS sy-vline 
WA_CRMCKRSFA_STR-UNICODE sy-vline 
WA_CRMCKRSFA_STR-ACKNOWLED sy-vline 
WA_CRMCKRSFA_STR-EXCEPTED sy-vline 
WA_CRMCKRSFA_STR-IP_SYS sy-vline 
WA_CRMCKRSFA_STR-IP_NUM sy-vline 
WA_CRMCKRSFA_STR-IP_YEAR sy-vline 
WA_CRMCKRSFA_STR-IP_CLASS sy-vline 
WA_CRMCKRSFA_STR-IP_STATUS sy-vline 
WA_CRMCKRSFA_STR-SRC_OSETID sy-vline 
WA_CRMCKRSFA_STR-SRC_RESNBR sy-vline 
WA_CRMCKRSFA_STR-PLATFORM sy-vline 
WA_CRMCKRSFA_STR-SRC_DB_PLATFORM sy-vline 
WA_CRMCKRSFA_STR-SRC_OS_PLATFORM sy-vline 
WA_CRMCKRSFA_STR-SRC_KRNL_UC sy-vline      INTO ld_text SEPARATED BY SPACE.

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