ABAP Select data from SAP table P06_DSN_CHCO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P06_DSN_CHCO 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 P06_DSN_CHCO. 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 P06_DSN_CHCO 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_P06_DSN_CHCO TYPE STANDARD TABLE OF P06_DSN_CHCO,
      WA_P06_DSN_CHCO TYPE P06_DSN_CHCO,
      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: <P06_DSN_CHCO> TYPE P06_DSN_CHCO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P06_DSN_CHCO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P06_DSN_CHCO
  INTO TABLE IT_P06_DSN_CHCO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P06_DSN_CHCO
*  INTO TABLE @DATA(IT_P06_DSN_CHCO2).
*--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_P06_DSN_CHCO INDEX 1 INTO DATA(WA_P06_DSN_CHCO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P06_DSN_CHCO ASSIGNING <P06_DSN_CHCO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P06_DSN_CHCO>-CHMOD = 1.
<P06_DSN_CHCO>-CHSTA = 1.
<P06_DSN_CHCO>-CHAGI = 1.
<P06_DSN_CHCO>-CHNAT = 1.
<P06_DSN_CHCO>-CHINT = 1.

ENDLOOP.

LOOP AT IT_P06_DSN_CHCO INTO WA_P06_DSN_CHCO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P06_DSN_CHCO-CHUMQ, sy-vline,
  WA_P06_DSN_CHCO-CHQTC, sy-vline,
  WA_P06_DSN_CHCO-CHMEX, sy-vline,
  WA_P06_DSN_CHCO-CHSAL, sy-vline,
  WA_P06_DSN_CHCO-CHALS, sy-vline,
  WA_P06_DSN_CHCO-CHCOL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P06_DSN_CHCO 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_P06_DSN_CHCO 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_P06_DSN_CHCO INTO WA_P06_DSN_CHCO.


*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_P06_DSN_CHCO_STR, 
CHMOD TYPE STRING,
CHSTA TYPE STRING,
CHAGI TYPE STRING,
CHNAT TYPE STRING,
CHINT TYPE STRING,
CHUMQ TYPE STRING,
CHQTC TYPE STRING,
CHMEX TYPE STRING,
CHSAL TYPE STRING,
CHALS TYPE STRING,
CHCOL TYPE STRING,
CHASI TYPE STRING,
CHSIR TYPE STRING,
CHNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P06_DSN_CHCO_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_P06_DSN_CHCO_STR-CHMOD sy-vline 
WA_P06_DSN_CHCO_STR-CHSTA sy-vline 
WA_P06_DSN_CHCO_STR-CHAGI sy-vline 
WA_P06_DSN_CHCO_STR-CHNAT sy-vline 
WA_P06_DSN_CHCO_STR-CHINT sy-vline 
WA_P06_DSN_CHCO_STR-CHUMQ sy-vline 
WA_P06_DSN_CHCO_STR-CHQTC sy-vline 
WA_P06_DSN_CHCO_STR-CHMEX sy-vline 
WA_P06_DSN_CHCO_STR-CHSAL sy-vline 
WA_P06_DSN_CHCO_STR-CHALS sy-vline 
WA_P06_DSN_CHCO_STR-CHCOL sy-vline 
WA_P06_DSN_CHCO_STR-CHASI sy-vline 
WA_P06_DSN_CHCO_STR-CHSIR sy-vline 
WA_P06_DSN_CHCO_STR-CHNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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