ABAP Select data from SAP table CRSHIFT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRSHIFT 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 CRSHIFT. 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 CRSHIFT 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_CRSHIFT TYPE STANDARD TABLE OF CRSHIFT,
      WA_CRSHIFT TYPE CRSHIFT,
      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: <CRSHIFT> TYPE CRSHIFT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRSHIFT
*  INTO TABLE @DATA(IT_CRSHIFT2).
*--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_CRSHIFT INDEX 1 INTO DATA(WA_CRSHIFT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRSHIFT>-START = 1.
<CRSHIFT>-ENDE = 1.
<CRSHIFT>-DATE_START = 1.
<CRSHIFT>-DATE_ENDE = 1.
<CRSHIFT>-NACHT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRSHIFT-ANGEBOT, sy-vline,
  WA_CRSHIFT-PFAKT, sy-vline,
  WA_CRSHIFT-ANGEBOT1, sy-vline,
  WA_CRSHIFT-PFAKT1, sy-vline,
  WA_CRSHIFT-ANGEBOT2, sy-vline,
  WA_CRSHIFT-PFAKT2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRSHIFT 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_CRSHIFT 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_CRSHIFT INTO WA_CRSHIFT.


*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_CRSHIFT_STR, 
START TYPE STRING,
ENDE TYPE STRING,
DATE_START TYPE STRING,
DATE_ENDE TYPE STRING,
NACHT TYPE STRING,
ANGEBOT TYPE STRING,
PFAKT TYPE STRING,
ANGEBOT1 TYPE STRING,
PFAKT1 TYPE STRING,
ANGEBOT2 TYPE STRING,
PFAKT2 TYPE STRING,
NGRAD TYPE STRING,
ANZHL TYPE STRING,
MNCAP TYPE STRING,
KAPAANGEB TYPE STRING,
PAMOD TYPE STRING,
DATUVTPROG TYPE STRING,
DATUBTPROG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRSHIFT_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_CRSHIFT_STR-START sy-vline 
WA_CRSHIFT_STR-ENDE sy-vline 
WA_CRSHIFT_STR-DATE_START sy-vline 
WA_CRSHIFT_STR-DATE_ENDE sy-vline 
WA_CRSHIFT_STR-NACHT sy-vline 
WA_CRSHIFT_STR-ANGEBOT sy-vline 
WA_CRSHIFT_STR-PFAKT sy-vline 
WA_CRSHIFT_STR-ANGEBOT1 sy-vline 
WA_CRSHIFT_STR-PFAKT1 sy-vline 
WA_CRSHIFT_STR-ANGEBOT2 sy-vline 
WA_CRSHIFT_STR-PFAKT2 sy-vline 
WA_CRSHIFT_STR-NGRAD sy-vline 
WA_CRSHIFT_STR-ANZHL sy-vline 
WA_CRSHIFT_STR-MNCAP sy-vline 
WA_CRSHIFT_STR-KAPAANGEB sy-vline 
WA_CRSHIFT_STR-PAMOD sy-vline 
WA_CRSHIFT_STR-DATUVTPROG sy-vline 
WA_CRSHIFT_STR-DATUBTPROG sy-vline      INTO ld_text SEPARATED BY SPACE.

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