ABAP Select data from SAP table P12SB00_DAQ_T_DECL_HEADER_2009 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12SB00_DAQ_T_DECL_HEADER_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 P12SB00_DAQ_T_DECL_HEADER_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 P12SB00_DAQ_T_DECL_HEADER_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_P12SB00_DAQ_T_DECL_HEADER_2009 TYPE STANDARD TABLE OF P12SB00_DAQ_T_DECL_HEADER_2009,
      WA_P12SB00_DAQ_T_DECL_HEADER_2009 TYPE P12SB00_DAQ_T_DECL_HEADER_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: <P12SB00_DAQ_T_DECL_HEADER_2009> TYPE P12SB00_DAQ_T_DECL_HEADER_2009.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12SB00_DAQ_T_DECL_HEADER_2009.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12SB00_DAQ_T_DECL_HEADER_2009
  INTO TABLE IT_P12SB00_DAQ_T_DECL_HEADER_2009.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12SB00_DAQ_T_DECL_HEADER_2009
*  INTO TABLE @DATA(IT_P12SB00_DAQ_T_DECL_HEADER_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_P12SB00_DAQ_T_DECL_HEADER_2009 INDEX 1 INTO DATA(WA_P12SB00_DAQ_T_DECL_HEADER_20092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12SB00_DAQ_T_DECL_HEADER_2009 ASSIGNING <P12SB00_DAQ_T_DECL_HEADER_2009>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12SB00_DAQ_T_DECL_HEADER_2009>-SECTN = 1.
<P12SB00_DAQ_T_DECL_HEADER_2009>-COMID = 1.
<P12SB00_DAQ_T_DECL_HEADER_2009>-RSZNR = 1.
<P12SB00_DAQ_T_DECL_HEADER_2009>-SPKLG = 1.
<P12SB00_DAQ_T_DECL_HEADER_2009>-CCODE = 1.

ENDLOOP.

LOOP AT IT_P12SB00_DAQ_T_DECL_HEADER_2009 INTO WA_P12SB00_DAQ_T_DECL_HEADER_2009.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12SB00_DAQ_T_DECL_HEADER_2009-VATNR, sy-vline,
  WA_P12SB00_DAQ_T_DECL_HEADER_2009-NAME1, sy-vline,
  WA_P12SB00_DAQ_T_DECL_HEADER_2009-NAME2, sy-vline,
  WA_P12SB00_DAQ_T_DECL_HEADER_2009-ADSTR, sy-vline,
  WA_P12SB00_DAQ_T_DECL_HEADER_2009-ADNM1, sy-vline,
  WA_P12SB00_DAQ_T_DECL_HEADER_2009-ADCTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12SB00_DAQ_T_DECL_HEADER_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_P12SB00_DAQ_T_DECL_HEADER_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_P12SB00_DAQ_T_DECL_HEADER_2009 INTO WA_P12SB00_DAQ_T_DECL_HEADER_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 ISOLA, internal->external for field SPKLG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_P12SB00_DAQ_T_DECL_HEADER_2009-SPKLG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P12SB00_DAQ_T_DECL_HEADER_2009-SPKLG.
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_P12SB00_DAQ_T_DECL_HEADER_2009_STR, 
SECTN TYPE STRING,
COMID TYPE STRING,
RSZNR TYPE STRING,
SPKLG TYPE STRING,
CCODE TYPE STRING,
VATNR TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
ADSTR TYPE STRING,
ADNM1 TYPE STRING,
ADCTY TYPE STRING,
ADPCD TYPE STRING,
CPNM1 TYPE STRING,
CPTEL TYPE STRING,
CPFAX TYPE STRING,
CPMAI TYPE STRING,
NAM1F TYPE STRING,
NAM2F TYPE STRING,
ADSTF TYPE STRING,
ADCTF TYPE STRING,
NAM1D TYPE STRING,
NAM2D TYPE STRING,
ADSTD TYPE STRING,
ADCTD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12SB00_DAQ_T_DECL_HEADER_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_P12SB00_DAQ_T_DECL_HEADER_2009_STR-SECTN sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-COMID sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-RSZNR sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-SPKLG sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-CCODE sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-VATNR sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAME1 sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAME2 sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADSTR sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADNM1 sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADCTY sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADPCD sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-CPNM1 sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-CPTEL sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-CPFAX sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-CPMAI sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAM1F sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAM2F sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADSTF sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADCTF sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAM1D sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-NAM2D sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADSTD sy-vline 
WA_P12SB00_DAQ_T_DECL_HEADER_2009_STR-ADCTD sy-vline      INTO ld_text SEPARATED BY SPACE.

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