ABAP Select data from SAP table CXZEIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CXZEIT
*  INTO TABLE @DATA(IT_CXZEIT2).
*--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_CXZEIT INDEX 1 INTO DATA(WA_CXZEIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CXZEIT>-FSAV = 1.
<CXZEIT>-SSAV = 1.
<CXZEIT>-SSSB = 1.
<CXZEIT>-SSSA = 1.
<CXZEIT>-SSED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CXZEIT-SSSL, sy-vline,
  WA_CXZEIT-SSEL, sy-vline,
  WA_CXZEIT-FSSB, sy-vline,
  WA_CXZEIT-FSSA, sy-vline,
  WA_CXZEIT-FSED, sy-vline,
  WA_CXZEIT-FSSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CXZEIT 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_CXZEIT 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_CXZEIT INTO WA_CXZEIT.


*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 CUNIT, internal->external for field WRTZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-WRTZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-WRTZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RSTZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-RSTZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-RSTZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BEAZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-BEAZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-BEAZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ARUZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-ARUZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-ARUZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LIGZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-LIGZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-LIGZE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TRAZE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CXZEIT-TRAZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CXZEIT-TRAZE.
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_CXZEIT_STR, 
FSAV TYPE STRING,
SSAV TYPE STRING,
SSSB TYPE STRING,
SSSA TYPE STRING,
SSED TYPE STRING,
SSSL TYPE STRING,
SSEL TYPE STRING,
FSSB TYPE STRING,
FSSA TYPE STRING,
FSED TYPE STRING,
FSSL TYPE STRING,
FSEL TYPE STRING,
WARTEN TYPE STRING,
RUEST TYPE STRING,
BEARB TYPE STRING,
ABRUEST TYPE STRING,
LIEGEN TYPE STRING,
TRANSP TYPE STRING,
WRTZE TYPE STRING,
RSTZE TYPE STRING,
BEAZE TYPE STRING,
ARUZE TYPE STRING,
LIGZE TYPE STRING,
TRAZE TYPE STRING,
SPANZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CXZEIT_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_CXZEIT_STR-FSAV sy-vline 
WA_CXZEIT_STR-SSAV sy-vline 
WA_CXZEIT_STR-SSSB sy-vline 
WA_CXZEIT_STR-SSSA sy-vline 
WA_CXZEIT_STR-SSED sy-vline 
WA_CXZEIT_STR-SSSL sy-vline 
WA_CXZEIT_STR-SSEL sy-vline 
WA_CXZEIT_STR-FSSB sy-vline 
WA_CXZEIT_STR-FSSA sy-vline 
WA_CXZEIT_STR-FSED sy-vline 
WA_CXZEIT_STR-FSSL sy-vline 
WA_CXZEIT_STR-FSEL sy-vline 
WA_CXZEIT_STR-WARTEN sy-vline 
WA_CXZEIT_STR-RUEST sy-vline 
WA_CXZEIT_STR-BEARB sy-vline 
WA_CXZEIT_STR-ABRUEST sy-vline 
WA_CXZEIT_STR-LIEGEN sy-vline 
WA_CXZEIT_STR-TRANSP sy-vline 
WA_CXZEIT_STR-WRTZE sy-vline 
WA_CXZEIT_STR-RSTZE sy-vline 
WA_CXZEIT_STR-BEAZE sy-vline 
WA_CXZEIT_STR-ARUZE sy-vline 
WA_CXZEIT_STR-LIGZE sy-vline 
WA_CXZEIT_STR-TRAZE sy-vline 
WA_CXZEIT_STR-SPANZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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