ABAP Select data from SAP table CAUVZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAUVZ
*  INTO TABLE @DATA(IT_CAUVZ2).
*--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_CAUVZ INDEX 1 INTO DATA(WA_CAUVZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CAUVZ>-MANDT = 1.
<CAUVZ>-ABELN = 1.
<CAUVZ>-ABELP = 1.
<CAUVZ>-VZWRK = 1.
<CAUVZ>-VZENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAUVZ-VZLFR, sy-vline,
  WA_CAUVZ-PMNGV, sy-vline,
  WA_CAUVZ-IMNGV, sy-vline,
  WA_CAUVZ-MENGE_OPT, sy-vline,
  WA_CAUVZ-AUFME, sy-vline,
  WA_CAUVZ-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAUVZ 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_CAUVZ 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_CAUVZ INTO WA_CAUVZ.


*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 ABELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAUVZ-ABELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAUVZ-ABELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field EBLNU
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CAUVZ-EBLNU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAUVZ-EBLNU.
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_CAUVZ_STR, 
MANDT TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
VZWRK TYPE STRING,
VZENT TYPE STRING,
VZLFR TYPE STRING,
PMNGV TYPE STRING,
IMNGV TYPE STRING,
MENGE_OPT TYPE STRING,
AUFME TYPE STRING,
LIFNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
PLIFZ TYPE STRING,
WEBAZ TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BSTMG TYPE STRING,
BSTME TYPE STRING,
UMLMG TYPE STRING,
UMLME TYPE STRING,
LFMNG TYPE STRING,
VRKME TYPE STRING,
EBLNU TYPE STRING,
EBLPU TYPE STRING,
ABFST TYPE STRING,
ABAST TYPE STRING,
BSTST TYPE STRING,
UMLST TYPE STRING,
LIEST TYPE STRING,
ABVST TYPE STRING,
WEEST TYPE STRING,
KAGST TYPE STRING,
SPERR TYPE STRING,
BMERF TYPE STRING,
ELIKZ TYPE STRING,
BUKRS TYPE STRING,
LAND1 TYPE STRING,
WAFLU_VZ TYPE STRING,
LGORT TYPE STRING,
SLS_REL TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAUVZ_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_CAUVZ_STR-MANDT sy-vline 
WA_CAUVZ_STR-ABELN sy-vline 
WA_CAUVZ_STR-ABELP sy-vline 
WA_CAUVZ_STR-VZWRK sy-vline 
WA_CAUVZ_STR-VZENT sy-vline 
WA_CAUVZ_STR-VZLFR sy-vline 
WA_CAUVZ_STR-PMNGV sy-vline 
WA_CAUVZ_STR-IMNGV sy-vline 
WA_CAUVZ_STR-MENGE_OPT sy-vline 
WA_CAUVZ_STR-AUFME sy-vline 
WA_CAUVZ_STR-LIFNR sy-vline 
WA_CAUVZ_STR-VKORG sy-vline 
WA_CAUVZ_STR-VTWEG sy-vline 
WA_CAUVZ_STR-SPART sy-vline 
WA_CAUVZ_STR-PLIFZ sy-vline 
WA_CAUVZ_STR-WEBAZ sy-vline 
WA_CAUVZ_STR-EKORG sy-vline 
WA_CAUVZ_STR-EKGRP sy-vline 
WA_CAUVZ_STR-BSTMG sy-vline 
WA_CAUVZ_STR-BSTME sy-vline 
WA_CAUVZ_STR-UMLMG sy-vline 
WA_CAUVZ_STR-UMLME sy-vline 
WA_CAUVZ_STR-LFMNG sy-vline 
WA_CAUVZ_STR-VRKME sy-vline 
WA_CAUVZ_STR-EBLNU sy-vline 
WA_CAUVZ_STR-EBLPU sy-vline 
WA_CAUVZ_STR-ABFST sy-vline 
WA_CAUVZ_STR-ABAST sy-vline 
WA_CAUVZ_STR-BSTST sy-vline 
WA_CAUVZ_STR-UMLST sy-vline 
WA_CAUVZ_STR-LIEST sy-vline 
WA_CAUVZ_STR-ABVST sy-vline 
WA_CAUVZ_STR-WEEST sy-vline 
WA_CAUVZ_STR-KAGST sy-vline 
WA_CAUVZ_STR-SPERR sy-vline 
WA_CAUVZ_STR-BMERF sy-vline 
WA_CAUVZ_STR-ELIKZ sy-vline 
WA_CAUVZ_STR-BUKRS sy-vline 
WA_CAUVZ_STR-LAND1 sy-vline 
WA_CAUVZ_STR-WAFLU_VZ sy-vline 
WA_CAUVZ_STR-LGORT sy-vline 
WA_CAUVZ_STR-SLS_REL sy-vline 
WA_CAUVZ_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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