ABAP Select data from SAP table /ACCGO/CAS_S_CAI_NK_DB 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 /ACCGO/CAS_S_CAI_NK_DB 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 /ACCGO/CAS_S_CAI_NK_DB. 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 /ACCGO/CAS_S_CAI_NK_DB 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_/ACCGO/CAS_S_CAI_NK_DB TYPE STANDARD TABLE OF /ACCGO/CAS_S_CAI_NK_DB,
      WA_/ACCGO/CAS_S_CAI_NK_DB TYPE /ACCGO/CAS_S_CAI_NK_DB,
      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: </ACCGO/CAS_S_CAI_NK_DB> TYPE /ACCGO/CAS_S_CAI_NK_DB.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ACCGO/CAS_S_CAI_NK_DB
  INTO TABLE IT_/ACCGO/CAS_S_CAI_NK_DB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ACCGO/CAS_S_CAI_NK_DB
*  INTO TABLE @DATA(IT_/ACCGO/CAS_S_CAI_NK_DB2).
*--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_/ACCGO/CAS_S_CAI_NK_DB INDEX 1 INTO DATA(WA_/ACCGO/CAS_S_CAI_NK_DB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ACCGO/CAS_S_CAI_NK_DB ASSIGNING </ACCGO/CAS_S_CAI_NK_DB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ACCGO/CAS_S_CAI_NK_DB>-MATNR = 1.
</ACCGO/CAS_S_CAI_NK_DB>-HIGHER_LEVEL_ITE = 1.
</ACCGO/CAS_S_CAI_NK_DB>-REF_DOC_ITEM = 1.
</ACCGO/CAS_S_CAI_NK_DB>-DELIVERED_QTY = 1.
</ACCGO/CAS_S_CAI_NK_DB>-DELV_UOM = 1.

ENDLOOP.

LOOP AT IT_/ACCGO/CAS_S_CAI_NK_DB INTO WA_/ACCGO/CAS_S_CAI_NK_DB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ACCGO/CAS_S_CAI_NK_DB-APPLIED_QTY, sy-vline,
  WA_/ACCGO/CAS_S_CAI_NK_DB-APPL_UOM, sy-vline,
  WA_/ACCGO/CAS_S_CAI_NK_DB-PROP_QTY, sy-vline,
  WA_/ACCGO/CAS_S_CAI_NK_DB-PROP_UOM, sy-vline,
  WA_/ACCGO/CAS_S_CAI_NK_DB-STATUS, sy-vline,
  WA_/ACCGO/CAS_S_CAI_NK_DB-FULLY_APPLIED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ACCGO/CAS_S_CAI_NK_DB 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_/ACCGO/CAS_S_CAI_NK_DB 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_/ACCGO/CAS_S_CAI_NK_DB INTO WA_/ACCGO/CAS_S_CAI_NK_DB.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAS_S_CAI_NK_DB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAS_S_CAI_NK_DB-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAS_S_CAI_NK_DB-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAS_S_CAI_NK_DB-KUNNR.
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_/ACCGO/CAS_S_CAI_NK_DB_STR, 
MATNR TYPE STRING,
HIGHER_LEVEL_ITE TYPE STRING,
REF_DOC_ITEM TYPE STRING,
DELIVERED_QTY TYPE STRING,
DELV_UOM TYPE STRING,
APPLIED_QTY TYPE STRING,
APPL_UOM TYPE STRING,
PROP_QTY TYPE STRING,
PROP_UOM TYPE STRING,
STATUS TYPE STRING,
FULLY_APPLIED TYPE STRING,
DELETION TYPE STRING,
QREP_GUID TYPE STRING,
QREP_VERSION TYPE STRING,
ADJUSTED_QTY TYPE STRING,
ADJUSTED_UOM TYPE STRING,
TO_BE_APPL_QTY TYPE STRING,
TO_BE_APPL_UOM TYPE STRING,
ITEM_QTY TYPE STRING,
ITEM_UOM TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
SIDE TYPE STRING,
TKONN TYPE STRING,
TPOSN TYPE STRING,
TPOSN_COM TYPE STRING,
LDRATE TYPE STRING,
LDQUOM TYPE STRING,
LDTUOM TYPE STRING,
DELV_QTY_RAW TYPE STRING,
DELV_UOM_RAW TYPE STRING,
CHARG TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
MANUAL_SPLIT TYPE STRING,
FINAL_DELIVERY TYPE STRING,
UN_SHRINK_PER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ACCGO/CAS_S_CAI_NK_DB_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_/ACCGO/CAS_S_CAI_NK_DB_STR-MATNR sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-HIGHER_LEVEL_ITE sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-REF_DOC_ITEM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DELIVERED_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DELV_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-APPLIED_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-APPL_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-PROP_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-PROP_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-STATUS sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-FULLY_APPLIED sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DELETION sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-QREP_GUID sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-QREP_VERSION sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-ADJUSTED_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-ADJUSTED_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-TO_BE_APPL_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-TO_BE_APPL_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-ITEM_QTY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-ITEM_UOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-NUMERATOR sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DENOMINATOR sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-SIDE sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-TKONN sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-TPOSN sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-TPOSN_COM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-LDRATE sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-LDQUOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-LDTUOM sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DELV_QTY_RAW sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-DELV_UOM_RAW sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-CHARG sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-WERKS sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-LGORT sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-LIFNR sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-KUNNR sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-MANUAL_SPLIT sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-FINAL_DELIVERY sy-vline 
WA_/ACCGO/CAS_S_CAI_NK_DB_STR-UN_SHRINK_PER sy-vline      INTO ld_text SEPARATED BY SPACE.

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