ABAP Select data from SAP table DLCO09 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DLCO09 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 DLCO09. 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 DLCO09 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_DLCO09 TYPE STANDARD TABLE OF DLCO09,
      WA_DLCO09 TYPE DLCO09,
      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: <DLCO09> TYPE DLCO09.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DLCO09.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DLCO09
  INTO TABLE IT_DLCO09.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DLCO09
*  INTO TABLE @DATA(IT_DLCO092).
*--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_DLCO09 INDEX 1 INTO DATA(WA_DLCO092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DLCO09 ASSIGNING <DLCO09>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DLCO09>-MANDT = 1.
<DLCO09>-APPLID = 1.
<DLCO09>-FORM_KEY = 1.
<DLCO09>-VERSION = 1.
<DLCO09>-LINE = 1.

ENDLOOP.

LOOP AT IT_DLCO09 INTO WA_DLCO09.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DLCO09-VALUE1, sy-vline,
  WA_DLCO09-VALUE2, sy-vline,
  WA_DLCO09-VALUE3, sy-vline,
  WA_DLCO09-COL1_NUM, sy-vline,
  WA_DLCO09-COL2_NUM, sy-vline,
  WA_DLCO09-COL3_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DLCO09 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_DLCO09 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_DLCO09 INTO WA_DLCO09.


*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 VERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DLCO09-VERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DLCO09-VERSION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DLCO09-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DLCO09-UOM.
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_DLCO09_STR, 
MANDT TYPE STRING,
APPLID TYPE STRING,
FORM_KEY TYPE STRING,
VERSION TYPE STRING,
LINE TYPE STRING,
VALUE1 TYPE STRING,
VALUE2 TYPE STRING,
VALUE3 TYPE STRING,
COL1_NUM TYPE STRING,
COL2_NUM TYPE STRING,
COL3_NUM TYPE STRING,
ROW_NUM TYPE STRING,
ROW_NAME TYPE STRING,
COL1_NAME TYPE STRING,
COL2_NAME TYPE STRING,
COL3_NAME TYPE STRING,
COL1_UOM TYPE STRING,
COL2_UOM TYPE STRING,
COL3_UOM TYPE STRING,
DESCR TYPE STRING,
ROW_TEXT TYPE STRING,
COL_TEXT TYPE STRING,
UOM TYPE STRING,
SEQ TYPE STRING,
FORMULA TYPE STRING,
ENTRY TYPE STRING,
ENTRIES TYPE STRING,
C_ENTRY TYPE STRING,
C_ENTRIES TYPE STRING,
CURR_ROW TYPE STRING,
COORD TYPE STRING,
INFO TYPE STRING,
COL_INFO TYPE STRING,
ROW_INFO TYPE STRING,
ROW_OBJECT TYPE STRING,
FORM_IND TYPE STRING,
HCLC_IND TYPE STRING,
BCLC_IND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DLCO09_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_DLCO09_STR-MANDT sy-vline 
WA_DLCO09_STR-APPLID sy-vline 
WA_DLCO09_STR-FORM_KEY sy-vline 
WA_DLCO09_STR-VERSION sy-vline 
WA_DLCO09_STR-LINE sy-vline 
WA_DLCO09_STR-VALUE1 sy-vline 
WA_DLCO09_STR-VALUE2 sy-vline 
WA_DLCO09_STR-VALUE3 sy-vline 
WA_DLCO09_STR-COL1_NUM sy-vline 
WA_DLCO09_STR-COL2_NUM sy-vline 
WA_DLCO09_STR-COL3_NUM sy-vline 
WA_DLCO09_STR-ROW_NUM sy-vline 
WA_DLCO09_STR-ROW_NAME sy-vline 
WA_DLCO09_STR-COL1_NAME sy-vline 
WA_DLCO09_STR-COL2_NAME sy-vline 
WA_DLCO09_STR-COL3_NAME sy-vline 
WA_DLCO09_STR-COL1_UOM sy-vline 
WA_DLCO09_STR-COL2_UOM sy-vline 
WA_DLCO09_STR-COL3_UOM sy-vline 
WA_DLCO09_STR-DESCR sy-vline 
WA_DLCO09_STR-ROW_TEXT sy-vline 
WA_DLCO09_STR-COL_TEXT sy-vline 
WA_DLCO09_STR-UOM sy-vline 
WA_DLCO09_STR-SEQ sy-vline 
WA_DLCO09_STR-FORMULA sy-vline 
WA_DLCO09_STR-ENTRY sy-vline 
WA_DLCO09_STR-ENTRIES sy-vline 
WA_DLCO09_STR-C_ENTRY sy-vline 
WA_DLCO09_STR-C_ENTRIES sy-vline 
WA_DLCO09_STR-CURR_ROW sy-vline 
WA_DLCO09_STR-COORD sy-vline 
WA_DLCO09_STR-INFO sy-vline 
WA_DLCO09_STR-COL_INFO sy-vline 
WA_DLCO09_STR-ROW_INFO sy-vline 
WA_DLCO09_STR-ROW_OBJECT sy-vline 
WA_DLCO09_STR-FORM_IND sy-vline 
WA_DLCO09_STR-HCLC_IND sy-vline 
WA_DLCO09_STR-BCLC_IND sy-vline      INTO ld_text SEPARATED BY SPACE.

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