ABAP Select data from SAP table CRMT_CREDIT_VALUES_EXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_CREDIT_VALUES_EXT
*  INTO TABLE @DATA(IT_CRMT_CREDIT_VALUES_EXT2).
*--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_CRMT_CREDIT_VALUES_EXT INDEX 1 INTO DATA(WA_CRMT_CREDIT_VALUES_EXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_CREDIT_VALUES_EXT>-GUID = 1.
<CRMT_CREDIT_VALUES_EXT>-HEAD_GUID = 1.
<CRMT_CREDIT_VALUES_EXT>-ITEM_GUID = 1.
<CRMT_CREDIT_VALUES_EXT>-ITEM_NUMBER_INT = 1.
<CRMT_CREDIT_VALUES_EXT>-ITM_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_CREDIT_VALUES_EXT-REF_HEAD_GUID, sy-vline,
  WA_CRMT_CREDIT_VALUES_EXT-REF_ITEM_GUID, sy-vline,
  WA_CRMT_CREDIT_VALUES_EXT-PAYER, sy-vline,
  WA_CRMT_CREDIT_VALUES_EXT-SALES_ORG, sy-vline,
  WA_CRMT_CREDIT_VALUES_EXT-DISTR_CHAN, sy-vline,
  WA_CRMT_CREDIT_VALUES_EXT-DIVISION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_CREDIT_VALUES_EXT 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_CRMT_CREDIT_VALUES_EXT 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_CRMT_CREDIT_VALUES_EXT INTO WA_CRMT_CREDIT_VALUES_EXT.


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

*Conversion exit PERI, internal->external for field SPMON
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_CREDIT_VALUES_EXT-SPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_CREDIT_VALUES_EXT-SPMON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPWOC
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_CREDIT_VALUES_EXT-SPWOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_CREDIT_VALUES_EXT-SPWOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPBUP
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_CREDIT_VALUES_EXT-SPBUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_CREDIT_VALUES_EXT-SPBUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_CREDIT_VALUES_EXT-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_CREDIT_VALUES_EXT-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_CRMT_CREDIT_VALUES_EXT_STR, 
GUID TYPE STRING,
HEAD_GUID TYPE STRING,
ITEM_GUID TYPE STRING,
ITEM_NUMBER_INT TYPE STRING,
ITM_TYPE TYPE STRING,
REF_HEAD_GUID TYPE STRING,
REF_ITEM_GUID TYPE STRING,
PAYER TYPE STRING,
SALES_ORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
LOCAL_CURR TYPE STRING,
EXCHG_RATE TYPE STRING,
CURRENCY TYPE STRING,
TIME_ZONE TYPE STRING,
KKBER TYPE STRING,
PROD_PR_GROUP TYPE STRING,
OP_QUOTE_NETV TYPE STRING,
OP_QUOTE_NETV_GU TYPE STRING,
OP_QUOTE_TAXV TYPE STRING,
OP_QUOTE_TAXV_GU TYPE STRING,
OPEN_QUOTE_DATE TYPE STRING,
OP_ORDER_NETV TYPE STRING,
OP_ORDER_NETV_GU TYPE STRING,
OP_ORDER_TAXV TYPE STRING,
OP_ORDER_TAXV_GU TYPE STRING,
OP_ORDER_DATE TYPE STRING,
OP_ORDER_SUPPL TYPE STRING,
OP_DELIV_NETV TYPE STRING,
OP_DELIV_NETV_GU TYPE STRING,
OP_DELIV_TAXV TYPE STRING,
OP_DELIV_TAXV_GU TYPE STRING,
OP_INVOICE_NETV TYPE STRING,
OP_INV_NETV_GU TYPE STRING,
OP_INVOICE_TAXV TYPE STRING,
OP_INV_TAXV_GU TYPE STRING,
OP_INVOICE_DATE TYPE STRING,
SSOUR TYPE STRING,
KNKLI TYPE STRING,
SPMON TYPE STRING,
SPTAG TYPE STRING,
SPWOC TYPE STRING,
SPBUP TYPE STRING,
BUKRS TYPE STRING,
KUNNR TYPE STRING,
CMWAE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_CREDIT_VALUES_EXT_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_CRMT_CREDIT_VALUES_EXT_STR-GUID sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-HEAD_GUID sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-ITEM_GUID sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-ITEM_NUMBER_INT sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-ITM_TYPE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-REF_HEAD_GUID sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-REF_ITEM_GUID sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-PAYER sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SALES_ORG sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-DISTR_CHAN sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-DIVISION sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-LOCAL_CURR sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-EXCHG_RATE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-CURRENCY sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-TIME_ZONE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-KKBER sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-PROD_PR_GROUP sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_QUOTE_NETV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_QUOTE_NETV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_QUOTE_TAXV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_QUOTE_TAXV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OPEN_QUOTE_DATE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_NETV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_NETV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_TAXV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_TAXV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_DATE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_ORDER_SUPPL sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_DELIV_NETV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_DELIV_NETV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_DELIV_TAXV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_DELIV_TAXV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_INVOICE_NETV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_INV_NETV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_INVOICE_TAXV sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_INV_TAXV_GU sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-OP_INVOICE_DATE sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SSOUR sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-KNKLI sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SPMON sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SPTAG sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SPWOC sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-SPBUP sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-BUKRS sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-KUNNR sy-vline 
WA_CRMT_CREDIT_VALUES_EXT_STR-CMWAE sy-vline      INTO ld_text SEPARATED BY SPACE.

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