ABAP Select data from SAP table CJVCSTCENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CJVCSTCENT
*  INTO TABLE @DATA(IT_CJVCSTCENT2).
*--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_CJVCSTCENT INDEX 1 INTO DATA(WA_CJVCSTCENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CJVCSTCENT>-MANDT = 1.
<CJVCSTCENT>-CONTROLLINGAREA = 1.
<CJVCSTCENT>-COSTCENTER = 1.
<CJVCSTCENT>-VALIDITYENDDATE = 1.
<CJVCSTCENT>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CJVCSTCENT-JOINTVENTURE, sy-vline,
  WA_CJVCSTCENT-JOINTVENTURERECOVERYCODE, sy-vline,
  WA_CJVCSTCENT-JOINTVENTUREEQUITYTYPE, sy-vline,
  WA_CJVCSTCENT-JOINTVENTUREOBJECTTYPE, sy-vline,
  WA_CJVCSTCENT-JNTINTRSTBILLGCLASS, sy-vline,
  WA_CJVCSTCENT-JNTINTRSTBILLGSUBCLASS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CJVCSTCENT 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_CJVCSTCENT 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_CJVCSTCENT INTO WA_CJVCSTCENT.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field JNTVNTRCOSTCTRSUSPENSEYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CJVCSTCENT-JNTVNTRCOSTCTRSUSPENSEYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CJVCSTCENT-JNTVNTRCOSTCTRSUSPENSEYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field JNTVNTRCOSTCTRNOTSUSPENSEYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CJVCSTCENT-JNTVNTRCOSTCTRNOTSUSPENSEYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CJVCSTCENT-JNTVNTRCOSTCTRNOTSUSPENSEYEAR.
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_CJVCSTCENT_STR, 
MANDT TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COSTCENTER TYPE STRING,
VALIDITYENDDATE TYPE STRING,
COMPANYCODE TYPE STRING,
JOINTVENTURE TYPE STRING,
JOINTVENTURERECOVERYCODE TYPE STRING,
JOINTVENTUREEQUITYTYPE TYPE STRING,
JOINTVENTUREOBJECTTYPE TYPE STRING,
JNTINTRSTBILLGCLASS TYPE STRING,
JNTINTRSTBILLGSUBCLASS TYPE STRING,
JNTVNTRCOSTCTRSUSPSTSCRITLTY TYPE STRING,
JNTVNTRCOSTCTRISSUSPENDED TYPE STRING,
JNTVNTRCOSTCTRSUSPENSEPERD TYPE STRING,
JNTVNTRCOSTCTRSUSPENSEYEAR TYPE STRING,
JNTVNTRCOSTCTRISNOTSUSPENDED TYPE STRING,
JNTVNTRCOSTCTRNOTSUSPENSEPERD TYPE STRING,
JNTVNTRCOSTCTRNOTSUSPENSEYEAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CJVCSTCENT_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_CJVCSTCENT_STR-MANDT sy-vline 
WA_CJVCSTCENT_STR-CONTROLLINGAREA sy-vline 
WA_CJVCSTCENT_STR-COSTCENTER sy-vline 
WA_CJVCSTCENT_STR-VALIDITYENDDATE sy-vline 
WA_CJVCSTCENT_STR-COMPANYCODE sy-vline 
WA_CJVCSTCENT_STR-JOINTVENTURE sy-vline 
WA_CJVCSTCENT_STR-JOINTVENTURERECOVERYCODE sy-vline 
WA_CJVCSTCENT_STR-JOINTVENTUREEQUITYTYPE sy-vline 
WA_CJVCSTCENT_STR-JOINTVENTUREOBJECTTYPE sy-vline 
WA_CJVCSTCENT_STR-JNTINTRSTBILLGCLASS sy-vline 
WA_CJVCSTCENT_STR-JNTINTRSTBILLGSUBCLASS sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRSUSPSTSCRITLTY sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRISSUSPENDED sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRSUSPENSEPERD sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRSUSPENSEYEAR sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRISNOTSUSPENDED sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRNOTSUSPENSEPERD sy-vline 
WA_CJVCSTCENT_STR-JNTVNTRCOSTCTRNOTSUSPENSEYEAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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