ABAP Select data from SAP table TPDA_SYS_DY_TREECONTLINE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDA_SYS_DY_TREECONTLINE
*  INTO TABLE @DATA(IT_TPDA_SYS_DY_TREECONTLINE2).
*--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_TPDA_SYS_DY_TREECONTLINE INDEX 1 INTO DATA(WA_TPDA_SYS_DY_TREECONTLINE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPDA_SYS_DY_TREECONTLINE>-CONTAINERNAME = 1.
<TPDA_SYS_DY_TREECONTLINE>-CONTAINERTYPE = 1.
<TPDA_SYS_DY_TREECONTLINE>-NUMBERINCHAIN = 1.
<TPDA_SYS_DY_TREECONTLINE>-NUMBEROFAREA = 1.
<TPDA_SYS_DY_TREECONTLINE>-NROFSUBSCREENINCHAIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPDA_SYS_DY_TREECONTLINE-NROFTABSTRIPAREA, sy-vline,
  WA_TPDA_SYS_DY_TREECONTLINE-CURRENTLINES, sy-vline,
  WA_TPDA_SYS_DY_TREECONTLINE-CURRENTCOLUMNS, sy-vline,
  WA_TPDA_SYS_DY_TREECONTLINE-MAXROWS, sy-vline,
  WA_TPDA_SYS_DY_TREECONTLINE-MAXCOLUMNS, sy-vline,
  WA_TPDA_SYS_DY_TREECONTLINE-MINROWS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPDA_SYS_DY_TREECONTLINE 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_TPDA_SYS_DY_TREECONTLINE 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_TPDA_SYS_DY_TREECONTLINE INTO WA_TPDA_SYS_DY_TREECONTLINE.


*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_TPDA_SYS_DY_TREECONTLINE_STR, 
CONTAINERNAME TYPE STRING,
CONTAINERTYPE TYPE STRING,
NUMBERINCHAIN TYPE STRING,
NUMBEROFAREA TYPE STRING,
NROFSUBSCREENINCHAIN TYPE STRING,
NROFTABSTRIPAREA TYPE STRING,
CURRENTLINES TYPE STRING,
CURRENTCOLUMNS TYPE STRING,
MAXROWS TYPE STRING,
MAXCOLUMNS TYPE STRING,
MINROWS TYPE STRING,
MINCOLUMNS TYPE STRING,
ISSCROLLABLE TYPE STRING,
SWITCHID TYPE STRING,
SWITCHED TYPE STRING,
SWITCH_SHOW TYPE STRING,
SWITCH_HIDE TYPE STRING,
SWITCH_IGNORE TYPE STRING,
SWITCHSTATE_ENABLED TYPE STRING,
SWITCHSTATE_DISABLED TYPE STRING,
SWITCHSTATE_ON TYPE STRING,
SWITCHSTATE_OFF TYPE STRING,
CONTAINER_ROW TYPE STRING,
CONTAINER_COLUMN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPDA_SYS_DY_TREECONTLINE_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_TPDA_SYS_DY_TREECONTLINE_STR-CONTAINERNAME sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-CONTAINERTYPE sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-NUMBERINCHAIN sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-NUMBEROFAREA sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-NROFSUBSCREENINCHAIN sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-NROFTABSTRIPAREA sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-CURRENTLINES sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-CURRENTCOLUMNS sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-MAXROWS sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-MAXCOLUMNS sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-MINROWS sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-MINCOLUMNS sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-ISSCROLLABLE sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHID sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHED sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCH_SHOW sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCH_HIDE sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCH_IGNORE sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHSTATE_ENABLED sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHSTATE_DISABLED sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHSTATE_ON sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-SWITCHSTATE_OFF sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-CONTAINER_ROW sy-vline 
WA_TPDA_SYS_DY_TREECONTLINE_STR-CONTAINER_COLUMN sy-vline      INTO ld_text SEPARATED BY SPACE.

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