ABAP Select data from SAP table EMMA_CWL_SELCRIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMMA_CWL_SELCRIT
*  INTO TABLE @DATA(IT_EMMA_CWL_SELCRIT2).
*--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_EMMA_CWL_SELCRIT INDEX 1 INTO DATA(WA_EMMA_CWL_SELCRIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMMA_CWL_SELCRIT>-CLIENT = 1.
<EMMA_CWL_SELCRIT>-CASENR = 1.
<EMMA_CWL_SELCRIT>-CASE_GUID = 1.
<EMMA_CWL_SELCRIT>-RUNID = 1.
<EMMA_CWL_SELCRIT>-INTNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMMA_CWL_SELCRIT-LOGSYS, sy-vline,
  WA_EMMA_CWL_SELCRIT-BPGUID, sy-vline,
  WA_EMMA_CWL_SELCRIT-BPCODE, sy-vline,
  WA_EMMA_CWL_SELCRIT-CTYPE, sy-vline,
  WA_EMMA_CWL_SELCRIT-STATUS, sy-vline,
  WA_EMMA_CWL_SELCRIT-CCAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMMA_CWL_SELCRIT 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_EMMA_CWL_SELCRIT 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_EMMA_CWL_SELCRIT INTO WA_EMMA_CWL_SELCRIT.


*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 ALPHA, internal->external for field CASENR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMMA_CWL_SELCRIT-CASENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMMA_CWL_SELCRIT-CASENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMMA_CWL_SELCRIT-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMMA_CWL_SELCRIT-LOGSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BPCODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMMA_CWL_SELCRIT-BPCODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMMA_CWL_SELCRIT-BPCODE.
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_EMMA_CWL_SELCRIT_STR, 
CLIENT TYPE STRING,
CASENR TYPE STRING,
CASE_GUID TYPE STRING,
RUNID TYPE STRING,
INTNR TYPE STRING,
LOGSYS TYPE STRING,
BPGUID TYPE STRING,
BPCODE TYPE STRING,
CTYPE TYPE STRING,
STATUS TYPE STRING,
CCAT TYPE STRING,
PRIO TYPE STRING,
PRIOORIG TYPE STRING,
BRGRU TYPE STRING,
MAINOBJTYPE TYPE STRING,
MAINOBJKEY TYPE STRING,
ORIG_DATE TYPE STRING,
ORIG_TIME TYPE STRING,
CURRPROC TYPE STRING,
REACODE TYPE STRING,
CANCODE TYPE STRING,
PREVPROC TYPE STRING,
DUE_DATE TYPE STRING,
DUE_TIME TYPE STRING,
XNOTE TYPE STRING,
CASETXT TYPE STRING,
FWM TYPE STRING,
CUSTSTATUS TYPE STRING,
CREATED_DATE TYPE STRING,
CREATED_TIME TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_DATE TYPE STRING,
CHANGED_TIME TYPE STRING,
CHANGED_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMMA_CWL_SELCRIT_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_EMMA_CWL_SELCRIT_STR-CLIENT sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CASENR sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CASE_GUID sy-vline 
WA_EMMA_CWL_SELCRIT_STR-RUNID sy-vline 
WA_EMMA_CWL_SELCRIT_STR-INTNR sy-vline 
WA_EMMA_CWL_SELCRIT_STR-LOGSYS sy-vline 
WA_EMMA_CWL_SELCRIT_STR-BPGUID sy-vline 
WA_EMMA_CWL_SELCRIT_STR-BPCODE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CTYPE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-STATUS sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CCAT sy-vline 
WA_EMMA_CWL_SELCRIT_STR-PRIO sy-vline 
WA_EMMA_CWL_SELCRIT_STR-PRIOORIG sy-vline 
WA_EMMA_CWL_SELCRIT_STR-BRGRU sy-vline 
WA_EMMA_CWL_SELCRIT_STR-MAINOBJTYPE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-MAINOBJKEY sy-vline 
WA_EMMA_CWL_SELCRIT_STR-ORIG_DATE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-ORIG_TIME sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CURRPROC sy-vline 
WA_EMMA_CWL_SELCRIT_STR-REACODE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CANCODE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-PREVPROC sy-vline 
WA_EMMA_CWL_SELCRIT_STR-DUE_DATE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-DUE_TIME sy-vline 
WA_EMMA_CWL_SELCRIT_STR-XNOTE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CASETXT sy-vline 
WA_EMMA_CWL_SELCRIT_STR-FWM sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CUSTSTATUS sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CREATED_DATE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CREATED_TIME sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CREATED_BY sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CHANGED_DATE sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CHANGED_TIME sy-vline 
WA_EMMA_CWL_SELCRIT_STR-CHANGED_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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