ABAP Select data from SAP table EIAC_ONE_PAY_CARD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EIAC_ONE_PAY_CARD
*  INTO TABLE @DATA(IT_EIAC_ONE_PAY_CARD2).
*--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_EIAC_ONE_PAY_CARD INDEX 1 INTO DATA(WA_EIAC_ONE_PAY_CARD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EIAC_ONE_PAY_CARD>-MANDT = 1.
<EIAC_ONE_PAY_CARD>-PARTNER = 1.
<EIAC_ONE_PAY_CARD>-CCARD_ID = 1.
<EIAC_ONE_PAY_CARD>-CCINS = 1.
<EIAC_ONE_PAY_CARD>-CCNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EIAC_ONE_PAY_CARD-CCDEF, sy-vline,
  WA_EIAC_ONE_PAY_CARD-CCACCNAME, sy-vline,
  WA_EIAC_ONE_PAY_CARD-CARD_GUID, sy-vline,
  WA_EIAC_ONE_PAY_CARD-BP_EEW_BUT0CC, sy-vline,
  WA_EIAC_ONE_PAY_CARD-DATBI, sy-vline,
  WA_EIAC_ONE_PAY_CARD-TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EIAC_ONE_PAY_CARD 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_EIAC_ONE_PAY_CARD 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_EIAC_ONE_PAY_CARD INTO WA_EIAC_ONE_PAY_CARD.


*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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EIAC_ONE_PAY_CARD-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EIAC_ONE_PAY_CARD-PARTNER.
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_EIAC_ONE_PAY_CARD_STR, 
MANDT TYPE STRING,
PARTNER TYPE STRING,
CCARD_ID TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCDEF TYPE STRING,
CCACCNAME TYPE STRING,
CARD_GUID TYPE STRING,
BP_EEW_BUT0CC TYPE STRING,
DATBI TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EIAC_ONE_PAY_CARD_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_EIAC_ONE_PAY_CARD_STR-MANDT sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-PARTNER sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CCARD_ID sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CCINS sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CCNUM sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CCDEF sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CCACCNAME sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-CARD_GUID sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-BP_EEW_BUT0CC sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-DATBI sy-vline 
WA_EIAC_ONE_PAY_CARD_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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