ABAP Select data from SAP table P12SDOG_DAQ_T_DECL_BODY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P12SDOG_DAQ_T_DECL_BODY 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 P12SDOG_DAQ_T_DECL_BODY. 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 P12SDOG_DAQ_T_DECL_BODY 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_P12SDOG_DAQ_T_DECL_BODY TYPE STANDARD TABLE OF P12SDOG_DAQ_T_DECL_BODY,
      WA_P12SDOG_DAQ_T_DECL_BODY TYPE P12SDOG_DAQ_T_DECL_BODY,
      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: <P12SDOG_DAQ_T_DECL_BODY> TYPE P12SDOG_DAQ_T_DECL_BODY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P12SDOG_DAQ_T_DECL_BODY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P12SDOG_DAQ_T_DECL_BODY
  INTO TABLE IT_P12SDOG_DAQ_T_DECL_BODY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P12SDOG_DAQ_T_DECL_BODY
*  INTO TABLE @DATA(IT_P12SDOG_DAQ_T_DECL_BODY2).
*--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_P12SDOG_DAQ_T_DECL_BODY INDEX 1 INTO DATA(WA_P12SDOG_DAQ_T_DECL_BODY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P12SDOG_DAQ_T_DECL_BODY ASSIGNING <P12SDOG_DAQ_T_DECL_BODY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P12SDOG_DAQ_T_DECL_BODY>-SECTN = 1.
<P12SDOG_DAQ_T_DECL_BODY>-SECTI = 1.
<P12SDOG_DAQ_T_DECL_BODY>-NNTXT = 1.
<P12SDOG_DAQ_T_DECL_BODY>-NNAMA = 1.
<P12SDOG_DAQ_T_DECL_BODY>-NNAMN = 1.

ENDLOOP.

LOOP AT IT_P12SDOG_DAQ_T_DECL_BODY INTO WA_P12SDOG_DAQ_T_DECL_BODY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P12SDOG_DAQ_T_DECL_BODY-NNAFA, sy-vline,
  WA_P12SDOG_DAQ_T_DECL_BODY-NNAFN, sy-vline,
  WA_P12SDOG_DAQ_T_DECL_BODY-NNATA, sy-vline,
  WA_P12SDOG_DAQ_T_DECL_BODY-NNATN, sy-vline,
  WA_P12SDOG_DAQ_T_DECL_BODY-NNBMA, sy-vline,
  WA_P12SDOG_DAQ_T_DECL_BODY-NNBMN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P12SDOG_DAQ_T_DECL_BODY 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_P12SDOG_DAQ_T_DECL_BODY 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_P12SDOG_DAQ_T_DECL_BODY INTO WA_P12SDOG_DAQ_T_DECL_BODY.


*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_P12SDOG_DAQ_T_DECL_BODY_STR, 
SECTN TYPE STRING,
SECTI TYPE STRING,
NNTXT TYPE STRING,
NNAMA TYPE STRING,
NNAMN TYPE STRING,
NNAFA TYPE STRING,
NNAFN TYPE STRING,
NNATA TYPE STRING,
NNATN TYPE STRING,
NNBMA TYPE STRING,
NNBMN TYPE STRING,
NNBFA TYPE STRING,
NNBFN TYPE STRING,
NNBTA TYPE STRING,
NNBTN TYPE STRING,
NNCMA TYPE STRING,
NNCMN TYPE STRING,
NNCFA TYPE STRING,
NNCFN TYPE STRING,
NNCTA TYPE STRING,
NNCTN TYPE STRING,
NNDMA TYPE STRING,
NNDMN TYPE STRING,
NNDFA TYPE STRING,
NNDFN TYPE STRING,
NNDTA TYPE STRING,
NNDTN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P12SDOG_DAQ_T_DECL_BODY_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_P12SDOG_DAQ_T_DECL_BODY_STR-SECTN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-SECTI sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNTXT sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNAMA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNAMN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNAFA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNAFN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNATA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNATN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBMA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBMN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBFA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBFN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBTA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNBTN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCMA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCMN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCFA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCFN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCTA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNCTN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDMA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDMN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDFA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDFN sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDTA sy-vline 
WA_P12SDOG_DAQ_T_DECL_BODY_STR-NNDTN sy-vline      INTO ld_text SEPARATED BY SPACE.

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