ABAP Select data from SAP table CRMCHKRESS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMCHKRESS
*  INTO TABLE @DATA(IT_CRMCHKRESS2).
*--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_CRMCHKRESS INDEX 1 INTO DATA(WA_CRMCHKRESS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMCHKRESS>-SORTINDEX = 1.
<CRMCHKRESS>-DLVUNIT = 1.
<CRMCHKRESS>-DLVUREL = 1.
<CRMCHKRESS>-COMP_SHORT = 1.
<CRMCHKRESS>-DEVCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMCHKRESS-MSGGRPID, sy-vline,
  WA_CRMCHKRESS-CHKID, sy-vline,
  WA_CRMCHKRESS-CHKMSGID, sy-vline,
  WA_CRMCHKRESS-Q_STANDARD, sy-vline,
  WA_CRMCHKRESS-RESP1, sy-vline,
  WA_CRMCHKRESS-RESP2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMCHKRESS 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_CRMCHKRESS 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_CRMCHKRESS INTO WA_CRMCHKRESS.


*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 RESP1
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CRMUS, internal->external for field RESP2
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CRMUS, internal->external for field RESP3
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CRMUS, internal->external for field RESP4
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CRMUS, internal->external for field RESP5
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CRMUS, internal->external for field RESP
CALL FUNCTION 'CONVERSION_EXIT_CRMUS_OUTPUT'
  EXPORTING
    input =                      WA_CRMCHKRESS-RESP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMCHKRESS-RESP.
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_CRMCHKRESS_STR, 
SORTINDEX TYPE STRING,
DLVUNIT TYPE STRING,
DLVUREL TYPE STRING,
COMP_SHORT TYPE STRING,
DEVCLASS TYPE STRING,
MSGGRPID TYPE STRING,
CHKID TYPE STRING,
CHKMSGID TYPE STRING,
Q_STANDARD TYPE STRING,
RESP1 TYPE STRING,
RESP2 TYPE STRING,
RESP3 TYPE STRING,
RESP4 TYPE STRING,
RESP5 TYPE STRING,
RESP TYPE STRING,
NBRPRIO1 TYPE STRING,
NBRPRIO2 TYPE STRING,
NBRPRIO3 TYPE STRING,
NBRPRIO4 TYPE STRING,
PROJECT_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMCHKRESS_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_CRMCHKRESS_STR-SORTINDEX sy-vline 
WA_CRMCHKRESS_STR-DLVUNIT sy-vline 
WA_CRMCHKRESS_STR-DLVUREL sy-vline 
WA_CRMCHKRESS_STR-COMP_SHORT sy-vline 
WA_CRMCHKRESS_STR-DEVCLASS sy-vline 
WA_CRMCHKRESS_STR-MSGGRPID sy-vline 
WA_CRMCHKRESS_STR-CHKID sy-vline 
WA_CRMCHKRESS_STR-CHKMSGID sy-vline 
WA_CRMCHKRESS_STR-Q_STANDARD sy-vline 
WA_CRMCHKRESS_STR-RESP1 sy-vline 
WA_CRMCHKRESS_STR-RESP2 sy-vline 
WA_CRMCHKRESS_STR-RESP3 sy-vline 
WA_CRMCHKRESS_STR-RESP4 sy-vline 
WA_CRMCHKRESS_STR-RESP5 sy-vline 
WA_CRMCHKRESS_STR-RESP sy-vline 
WA_CRMCHKRESS_STR-NBRPRIO1 sy-vline 
WA_CRMCHKRESS_STR-NBRPRIO2 sy-vline 
WA_CRMCHKRESS_STR-NBRPRIO3 sy-vline 
WA_CRMCHKRESS_STR-NBRPRIO4 sy-vline 
WA_CRMCHKRESS_STR-PROJECT_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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