ABAP Select data from SAP table P12BOW_REC9_1_2009 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12BOW_REC9_1_2009 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 P12BOW_REC9_1_2009. 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 P12BOW_REC9_1_2009 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_P12BOW_REC9_1_2009 TYPE STANDARD TABLE OF P12BOW_REC9_1_2009,
      WA_P12BOW_REC9_1_2009 TYPE P12BOW_REC9_1_2009,
      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: <P12BOW_REC9_1_2009> TYPE P12BOW_REC9_1_2009.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12BOW_REC9_1_2009.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12BOW_REC9_1_2009
  INTO TABLE IT_P12BOW_REC9_1_2009.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12BOW_REC9_1_2009
*  INTO TABLE @DATA(IT_P12BOW_REC9_1_20092).
*--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_P12BOW_REC9_1_2009 INDEX 1 INTO DATA(WA_P12BOW_REC9_1_20092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12BOW_REC9_1_2009 ASSIGNING <P12BOW_REC9_1_2009>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12BOW_REC9_1_2009>-BTRID = 1.
<P12BOW_REC9_1_2009>-BTIYR = 1.
<P12BOW_REC9_1_2009>-BTREG = 1.
<P12BOW_REC9_1_2009>-BTRET = 1.
<P12BOW_REC9_1_2009>-BTADM = 1.

ENDLOOP.

LOOP AT IT_P12BOW_REC9_1_2009 INTO WA_P12BOW_REC9_1_2009.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12BOW_REC9_1_2009-BTNM9, sy-vline,
  WA_P12BOW_REC9_1_2009-BTCNY, sy-vline,
  WA_P12BOW_REC9_1_2009-BTVOU, sy-vline,
  WA_P12BOW_REC9_1_2009-BTVSQ, sy-vline,
  WA_P12BOW_REC9_1_2009-BTLOG, sy-vline,
  WA_P12BOW_REC9_1_2009-BTOTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12BOW_REC9_1_2009 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_P12BOW_REC9_1_2009 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_P12BOW_REC9_1_2009 INTO WA_P12BOW_REC9_1_2009.


*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 GJAHR, internal->external for field BTIYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_P12BOW_REC9_1_2009-BTIYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P12BOW_REC9_1_2009-BTIYR.
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_P12BOW_REC9_1_2009_STR, 
BTRID TYPE STRING,
BTIYR TYPE STRING,
BTREG TYPE STRING,
BTRET TYPE STRING,
BTADM TYPE STRING,
BTNM9 TYPE STRING,
BTCNY TYPE STRING,
BTVOU TYPE STRING,
BTVSQ TYPE STRING,
BTLOG TYPE STRING,
BTOTR TYPE STRING,
BT811 TYPE STRING,
BT812 TYPE STRING,
BT813 TYPE STRING,
B9END TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12BOW_REC9_1_2009_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_P12BOW_REC9_1_2009_STR-BTRID sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTIYR sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTREG sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTRET sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTADM sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTNM9 sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTCNY sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTVOU sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTVSQ sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTLOG sy-vline 
WA_P12BOW_REC9_1_2009_STR-BTOTR sy-vline 
WA_P12BOW_REC9_1_2009_STR-BT811 sy-vline 
WA_P12BOW_REC9_1_2009_STR-BT812 sy-vline 
WA_P12BOW_REC9_1_2009_STR-BT813 sy-vline 
WA_P12BOW_REC9_1_2009_STR-B9END sy-vline      INTO ld_text SEPARATED BY SPACE.

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