ABAP Select data from SAP table E1IST_BUCC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1IST_BUCC 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 E1IST_BUCC. 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 E1IST_BUCC 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_E1IST_BUCC TYPE STANDARD TABLE OF E1IST_BUCC,
      WA_E1IST_BUCC TYPE E1IST_BUCC,
      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: <E1IST_BUCC> TYPE E1IST_BUCC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1IST_BUCC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1IST_BUCC
  INTO TABLE IT_E1IST_BUCC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1IST_BUCC
*  INTO TABLE @DATA(IT_E1IST_BUCC2).
*--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_E1IST_BUCC INDEX 1 INTO DATA(WA_E1IST_BUCC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1IST_BUCC ASSIGNING <E1IST_BUCC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1IST_BUCC>-CCARD_ID = 1.
<E1IST_BUCC>-CHIND_CCARD = 1.
<E1IST_BUCC>-CCINS = 1.
<E1IST_BUCC>-CCNUM = 1.
<E1IST_BUCC>-CCDEF = 1.

ENDLOOP.

LOOP AT IT_E1IST_BUCC INTO WA_E1IST_BUCC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1IST_BUCC-CCNAME, sy-vline,
  WA_E1IST_BUCC-ISSBANK, sy-vline,
  WA_E1IST_BUCC-CCTYP, sy-vline,
  WA_E1IST_BUCC-CCLOCK, sy-vline,
  WA_E1IST_BUCC-DATAB, sy-vline,
  WA_E1IST_BUCC-DATBI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1IST_BUCC 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_E1IST_BUCC 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_E1IST_BUCC INTO WA_E1IST_BUCC.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_E1IST_BUCC_STR, 
CCARD_ID TYPE STRING,
CHIND_CCARD TYPE STRING,
CCINS TYPE STRING,
CCNUM TYPE STRING,
CCDEF TYPE STRING,
CCNAME TYPE STRING,
ISSBANK TYPE STRING,
CCTYP TYPE STRING,
CCLOCK TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
AUSGDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1IST_BUCC_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_E1IST_BUCC_STR-CCARD_ID sy-vline 
WA_E1IST_BUCC_STR-CHIND_CCARD sy-vline 
WA_E1IST_BUCC_STR-CCINS sy-vline 
WA_E1IST_BUCC_STR-CCNUM sy-vline 
WA_E1IST_BUCC_STR-CCDEF sy-vline 
WA_E1IST_BUCC_STR-CCNAME sy-vline 
WA_E1IST_BUCC_STR-ISSBANK sy-vline 
WA_E1IST_BUCC_STR-CCTYP sy-vline 
WA_E1IST_BUCC_STR-CCLOCK sy-vline 
WA_E1IST_BUCC_STR-DATAB sy-vline 
WA_E1IST_BUCC_STR-DATBI sy-vline 
WA_E1IST_BUCC_STR-AUSGDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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