ABAP Select data from SAP table WER_TREE_STY into internal table
Get Example source ABAP code based on a different SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP WER_TREE_STY 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 WER_TREE_STY. 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 WER_TREE_STY 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_WER_TREE_STY TYPE STANDARD TABLE OF WER_TREE_STY, WA_WER_TREE_STY TYPE WER_TREE_STY, 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: <WER_TREE_STY> TYPE WER_TREE_STY. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_WER_TREE_STY. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM WER_TREE_STY INTO TABLE IT_WER_TREE_STY. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM WER_TREE_STY * INTO TABLE @DATA(IT_WER_TREE_STY2). *--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_WER_TREE_STY INDEX 1 INTO DATA(WA_WER_TREE_STY2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_WER_TREE_STY ASSIGNING <WER_TREE_STY>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<WER_TREE_STY>-ELEMENT = 1.
<WER_TREE_STY>-ID = 1.
<WER_TREE_STY>-NAME = 1.
<WER_TREE_STY>-DESCRIPTION = 1.
<WER_TREE_STY>-TYPE = 1.
ENDLOOP. LOOP AT IT_WER_TREE_STY INTO WA_WER_TREE_STY. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_WER_TREE_STY-SYSTEM_ELEMENT, sy-vline,
WA_WER_TREE_STY-NODE_ATTRIBUTE, sy-vline,
WA_WER_TREE_STY-NODE_KEY, sy-vline,
WA_WER_TREE_STY-RELATKEY, sy-vline,
WA_WER_TREE_STY-RELATSHIP, sy-vline,
WA_WER_TREE_STY-HIDDEN, sy-vline.
ENDLOOP. *Add any further fields from structure WA_WER_TREE_STY 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_WER_TREE_STY 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_WER_TREE_STY INTO WA_WER_TREE_STY. *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 WERTY, internal->external for field TYPE CALL FUNCTION 'CONVERSION_EXIT_WERTY_OUTPUT' EXPORTING input = WA_WER_TREE_STY-TYPE IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_WER_TREE_STY-TYPE.
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_WER_TREE_STY_STR,
ELEMENT TYPE STRING,
ID TYPE STRING,
NAME TYPE STRING,
DESCRIPTION TYPE STRING,
TYPE TYPE STRING,
SYSTEM_ELEMENT TYPE STRING,
NODE_ATTRIBUTE TYPE STRING,
NODE_KEY TYPE STRING,
RELATKEY TYPE STRING,
RELATSHIP TYPE STRING,
HIDDEN TYPE STRING,
DISABLED TYPE STRING,
ISFOLDER TYPE STRING,
N_IMAGE TYPE STRING,
EXP_IMAGE TYPE STRING,
STYLE TYPE STRING,
NO_BRANCH TYPE STRING,
EXPANDER TYPE STRING,
DRAGDROPID TYPE STRING,
USEROBJECT TYPE STRING,
TEXT TYPE STRING,
DESCRIPTION TYPE STRING,END OF T_EKKO_STR. DATA: WA_WER_TREE_STY_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_WER_TREE_STY_STR-ELEMENT sy-vline
WA_WER_TREE_STY_STR-ID sy-vline
WA_WER_TREE_STY_STR-NAME sy-vline
WA_WER_TREE_STY_STR-DESCRIPTION sy-vline
WA_WER_TREE_STY_STR-TYPE sy-vline
WA_WER_TREE_STY_STR-SYSTEM_ELEMENT sy-vline
WA_WER_TREE_STY_STR-NODE_ATTRIBUTE sy-vline
WA_WER_TREE_STY_STR-NODE_KEY sy-vline
WA_WER_TREE_STY_STR-RELATKEY sy-vline
WA_WER_TREE_STY_STR-RELATSHIP sy-vline
WA_WER_TREE_STY_STR-HIDDEN sy-vline
WA_WER_TREE_STY_STR-DISABLED sy-vline
WA_WER_TREE_STY_STR-ISFOLDER sy-vline
WA_WER_TREE_STY_STR-N_IMAGE sy-vline
WA_WER_TREE_STY_STR-EXP_IMAGE sy-vline
WA_WER_TREE_STY_STR-STYLE sy-vline
WA_WER_TREE_STY_STR-NO_BRANCH sy-vline
WA_WER_TREE_STY_STR-EXPANDER sy-vline
WA_WER_TREE_STY_STR-DRAGDROPID sy-vline
WA_WER_TREE_STY_STR-USEROBJECT sy-vline
WA_WER_TREE_STY_STR-TEXT sy-vline
WA_WER_TREE_STY_STR-DESCRIPTION sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.