ABAP Select data from SAP table BAPI_RE_ADVPAY_EXT_DATC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_RE_ADVPAY_EXT_DATC
*  INTO TABLE @DATA(IT_BAPI_RE_ADVPAY_EXT_DATC2).
*--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_BAPI_RE_ADVPAY_EXT_DATC INDEX 1 INTO DATA(WA_BAPI_RE_ADVPAY_EXT_DATC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_RE_ADVPAY_EXT_DATC>-CHANGE_INDICATOR = 1.
<BAPI_RE_ADVPAY_EXT_DATC>-CALCULATION_OBJECT_TYPE = 1.
<BAPI_RE_ADVPAY_EXT_DATC>-CALCULATION_OBJECT_ID = 1.
<BAPI_RE_ADVPAY_EXT_DATC>-CONDITION_TYPE = 1.
<BAPI_RE_ADVPAY_EXT_DATC>-CONDITION_VALID_FROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_RE_ADVPAY_EXT_DATC-PERIOD_FROM, sy-vline,
  WA_BAPI_RE_ADVPAY_EXT_DATC-PERIOD_TO, sy-vline,
  WA_BAPI_RE_ADVPAY_EXT_DATC-USES_SP_GL_IND, sy-vline,
  WA_BAPI_RE_ADVPAY_EXT_DATC-ACC_SYSTEM, sy-vline,
  WA_BAPI_RE_ADVPAY_EXT_DATC-LOGSYSTEM, sy-vline,
  WA_BAPI_RE_ADVPAY_EXT_DATC-REFERENCE_DOCUMENT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_RE_ADVPAY_EXT_DATC 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_BAPI_RE_ADVPAY_EXT_DATC 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_BAPI_RE_ADVPAY_EXT_DATC INTO WA_BAPI_RE_ADVPAY_EXT_DATC.


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

*Conversion exit REDAT, internal->external for field PERIOD_TO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_ADVPAY_EXT_DATC-PERIOD_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_ADVPAY_EXT_DATC-PERIOD_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_RE_ADVPAY_EXT_DATC-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_RE_ADVPAY_EXT_DATC-LOGSYSTEM.
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_BAPI_RE_ADVPAY_EXT_DATC_STR, 
CHANGE_INDICATOR TYPE STRING,
CALCULATION_OBJECT_TYPE TYPE STRING,
CALCULATION_OBJECT_ID TYPE STRING,
CONDITION_TYPE TYPE STRING,
CONDITION_VALID_FROM TYPE STRING,
PERIOD_FROM TYPE STRING,
PERIOD_TO TYPE STRING,
USES_SP_GL_IND TYPE STRING,
ACC_SYSTEM TYPE STRING,
LOGSYSTEM TYPE STRING,
REFERENCE_DOCUMENT_TYPE TYPE STRING,
REFERENCE_DOCUMENT_ID TYPE STRING,
ITEMNO_ACC TYPE STRING,
TAX_TYPE TYPE STRING,
TAX_GROUP TYPE STRING,
TAXJURCODE TYPE STRING,
TAXDATE TYPE STRING,
NET_AMOUNT TYPE STRING,
TAX_AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
INCLUDED_IN_CASHFLOW TYPE STRING,
NET_AMOUNT_BCA TYPE STRING,
TAX_AMOUNT_BCA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_RE_ADVPAY_EXT_DATC_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_BAPI_RE_ADVPAY_EXT_DATC_STR-CHANGE_INDICATOR sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CALCULATION_OBJECT_TYPE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CALCULATION_OBJECT_ID sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CONDITION_TYPE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CONDITION_VALID_FROM sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-PERIOD_FROM sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-PERIOD_TO sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-USES_SP_GL_IND sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-ACC_SYSTEM sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-LOGSYSTEM sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-REFERENCE_DOCUMENT_TYPE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-REFERENCE_DOCUMENT_ID sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-ITEMNO_ACC sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAX_TYPE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAX_GROUP sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAXJURCODE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAXDATE sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-NET_AMOUNT sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAX_AMOUNT sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CURRENCY sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-CURRENCY_ISO sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-INCLUDED_IN_CASHFLOW sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-NET_AMOUNT_BCA sy-vline 
WA_BAPI_RE_ADVPAY_EXT_DATC_STR-TAX_AMOUNT_BCA sy-vline      INTO ld_text SEPARATED BY SPACE.

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