ABAP Select data from SAP table BAPIPAYER 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 BAPIPAYER 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 BAPIPAYER. 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 BAPIPAYER 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_BAPIPAYER TYPE STANDARD TABLE OF BAPIPAYER,
      WA_BAPIPAYER TYPE BAPIPAYER,
      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: <BAPIPAYER> TYPE BAPIPAYER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIPAYER
*  INTO TABLE @DATA(IT_BAPIPAYER2).
*--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_BAPIPAYER INDEX 1 INTO DATA(WA_BAPIPAYER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIPAYER>-PAYER = 1.
<BAPIPAYER>-NAME = 1.
<BAPIPAYER>-STREET = 1.
<BAPIPAYER>-PO_BOX = 1.
<BAPIPAYER>-POSTL_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIPAYER-POBX_PCD, sy-vline,
  WA_BAPIPAYER-CITY, sy-vline,
  WA_BAPIPAYER-LANGU, sy-vline,
  WA_BAPIPAYER-COUNTRY, sy-vline,
  WA_BAPIPAYER-TELEPHONE, sy-vline,
  WA_BAPIPAYER-C_CTR_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIPAYER 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_BAPIPAYER 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_BAPIPAYER INTO WA_BAPIPAYER.


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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIPAYER-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIPAYER-LANGU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field TRADE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIPAYER-TRADE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIPAYER-TRADE_ID.
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_BAPIPAYER_STR, 
PAYER TYPE STRING,
NAME TYPE STRING,
STREET TYPE STRING,
PO_BOX TYPE STRING,
POSTL_CODE TYPE STRING,
POBX_PCD TYPE STRING,
CITY TYPE STRING,
LANGU TYPE STRING,
COUNTRY TYPE STRING,
TELEPHONE TYPE STRING,
C_CTR_AREA TYPE STRING,
CRED_ACCNT TYPE STRING,
CRED_LIMIT TYPE STRING,
ORDER_VALS TYPE STRING,
RCVBL_VALS TYPE STRING,
CRED_LIAB TYPE STRING,
CURRENCY TYPE STRING,
MN_INVOICE TYPE STRING,
BILL_SCHED TYPE STRING,
LIST_SCHED TYPE STRING,
VAL_LIMIT TYPE STRING,
ACCNT_ASGN TYPE STRING,
PMNTTRMS TYPE STRING,
ADD_VAL_DY TYPE STRING,
FIX_VAL_DY TYPE STRING,
PROD_PROP TYPE STRING,
BILL_BLOCK TYPE STRING,
ORDER_BLCK TYPE STRING,
VAT_REG_NO TYPE STRING,
VAT_CNTRY TYPE STRING,
TAX_CLASS1 TYPE STRING,
TAX_CLASS2 TYPE STRING,
TAX_CLASS3 TYPE STRING,
TAX_CLASS4 TYPE STRING,
TAX_CLASS5 TYPE STRING,
TAX_CLASS6 TYPE STRING,
TAX_CLASS7 TYPE STRING,
TAX_CLASS8 TYPE STRING,
TAX_CLASS9 TYPE STRING,
REBATE_REL TYPE STRING,
REBATE_FRM TYPE STRING,
CRED_GROUP TYPE STRING,
REPR_GROUP TYPE STRING,
RISK_CATEG TYPE STRING,
TRADE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIPAYER_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_BAPIPAYER_STR-PAYER sy-vline 
WA_BAPIPAYER_STR-NAME sy-vline 
WA_BAPIPAYER_STR-STREET sy-vline 
WA_BAPIPAYER_STR-PO_BOX sy-vline 
WA_BAPIPAYER_STR-POSTL_CODE sy-vline 
WA_BAPIPAYER_STR-POBX_PCD sy-vline 
WA_BAPIPAYER_STR-CITY sy-vline 
WA_BAPIPAYER_STR-LANGU sy-vline 
WA_BAPIPAYER_STR-COUNTRY sy-vline 
WA_BAPIPAYER_STR-TELEPHONE sy-vline 
WA_BAPIPAYER_STR-C_CTR_AREA sy-vline 
WA_BAPIPAYER_STR-CRED_ACCNT sy-vline 
WA_BAPIPAYER_STR-CRED_LIMIT sy-vline 
WA_BAPIPAYER_STR-ORDER_VALS sy-vline 
WA_BAPIPAYER_STR-RCVBL_VALS sy-vline 
WA_BAPIPAYER_STR-CRED_LIAB sy-vline 
WA_BAPIPAYER_STR-CURRENCY sy-vline 
WA_BAPIPAYER_STR-MN_INVOICE sy-vline 
WA_BAPIPAYER_STR-BILL_SCHED sy-vline 
WA_BAPIPAYER_STR-LIST_SCHED sy-vline 
WA_BAPIPAYER_STR-VAL_LIMIT sy-vline 
WA_BAPIPAYER_STR-ACCNT_ASGN sy-vline 
WA_BAPIPAYER_STR-PMNTTRMS sy-vline 
WA_BAPIPAYER_STR-ADD_VAL_DY sy-vline 
WA_BAPIPAYER_STR-FIX_VAL_DY sy-vline 
WA_BAPIPAYER_STR-PROD_PROP sy-vline 
WA_BAPIPAYER_STR-BILL_BLOCK sy-vline 
WA_BAPIPAYER_STR-ORDER_BLCK sy-vline 
WA_BAPIPAYER_STR-VAT_REG_NO sy-vline 
WA_BAPIPAYER_STR-VAT_CNTRY sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS1 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS2 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS3 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS4 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS5 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS6 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS7 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS8 sy-vline 
WA_BAPIPAYER_STR-TAX_CLASS9 sy-vline 
WA_BAPIPAYER_STR-REBATE_REL sy-vline 
WA_BAPIPAYER_STR-REBATE_FRM sy-vline 
WA_BAPIPAYER_STR-CRED_GROUP sy-vline 
WA_BAPIPAYER_STR-REPR_GROUP sy-vline 
WA_BAPIPAYER_STR-RISK_CATEG sy-vline 
WA_BAPIPAYER_STR-TRADE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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