ABAP Select data from SAP table EWASCLSFCLASS 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 EWASCLSFCLASS 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 EWASCLSFCLASS. 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 EWASCLSFCLASS 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_EWASCLSFCLASS TYPE STANDARD TABLE OF EWASCLSFCLASS, WA_EWASCLSFCLASS TYPE EWASCLSFCLASS, 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: <EWASCLSFCLASS> TYPE EWASCLSFCLASS. *Process all fields in table header/work area as string values PERFORM process_as_string_field_values CHANGING wa_EWASCLSFCLASS. SELECT * *restrict ABAP select to first 10 rows UP TO 10 ROWS FROM EWASCLSFCLASS INTO TABLE IT_EWASCLSFCLASS. *Select data and declare internal table using in-line method @DATA *SELECT * * FROM EWASCLSFCLASS * INTO TABLE @DATA(IT_EWASCLSFCLASS2). *--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_EWASCLSFCLASS INDEX 1 INTO DATA(WA_EWASCLSFCLASS2). *Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL LOOP AT IT_EWASCLSFCLASS ASSIGNING <EWASCLSFCLASS>.*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWASCLSFCLASS>-CLASSTYPE = 1.
<EWASCLSFCLASS>-CLASSNUM = 1.
<EWASCLSFCLASS>-STATUS = 1.
<EWASCLSFCLASS>-CLASSGROUP = 1.
<EWASCLSFCLASS>-DEPARTMENT_VIEW = 1.
ENDLOOP. LOOP AT IT_EWASCLSFCLASS INTO WA_EWASCLSFCLASS. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_EWASCLSFCLASS-VALID_FROM, sy-vline,
WA_EWASCLSFCLASS-VALID_TO, sy-vline,
WA_EWASCLSFCLASS-AUTHMAINTAIN, sy-vline,
WA_EWASCLSFCLASS-AUTHCLASSIFY, sy-vline,
WA_EWASCLSFCLASS-AUTHSEARCH, sy-vline,
WA_EWASCLSFCLASS-SAME_VALUE_NO, sy-vline.
ENDLOOP. *Add any further fields from structure WA_EWASCLSFCLASS 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_EWASCLSFCLASS 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_EWASCLSFCLASS INTO WA_EWASCLSFCLASS. *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 ALPHA, internal->external for field DOCUMENT_NUMBER CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_EWASCLSFCLASS-DOCUMENT_NUMBER IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_EWASCLSFCLASS-DOCUMENT_NUMBER.
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_EWASCLSFCLASS_STR,
CLASSTYPE TYPE STRING,
CLASSNUM TYPE STRING,
STATUS TYPE STRING,
CLASSGROUP TYPE STRING,
DEPARTMENT_VIEW TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
AUTHMAINTAIN TYPE STRING,
AUTHCLASSIFY TYPE STRING,
AUTHSEARCH TYPE STRING,
SAME_VALUE_NO TYPE STRING,
SAME_VALUE_W TYPE STRING,
SAME_VALUE_E TYPE STRING,
LOCAL_CLASS TYPE STRING,
KATALOG TYPE STRING,
STANDARD_NAME TYPE STRING,
STANDARD_NO TYPE STRING,
DATE_OF_ISSUE TYPE STRING,
DATE_OF_VERSION TYPE STRING,
NO_OF_VERSION TYPE STRING,
TABULAR_LAYOUT TYPE STRING,
DOCUMENT_NUMBER TYPE STRING,
DOCUMENT_TYPE TYPE STRING,
DOCUMENT_PART TYPE STRING,
DOCUMENT_VERSION TYPE STRING,END OF T_EKKO_STR. DATA: WA_EWASCLSFCLASS_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_EWASCLSFCLASS_STR-CLASSTYPE sy-vline
WA_EWASCLSFCLASS_STR-CLASSNUM sy-vline
WA_EWASCLSFCLASS_STR-STATUS sy-vline
WA_EWASCLSFCLASS_STR-CLASSGROUP sy-vline
WA_EWASCLSFCLASS_STR-DEPARTMENT_VIEW sy-vline
WA_EWASCLSFCLASS_STR-VALID_FROM sy-vline
WA_EWASCLSFCLASS_STR-VALID_TO sy-vline
WA_EWASCLSFCLASS_STR-AUTHMAINTAIN sy-vline
WA_EWASCLSFCLASS_STR-AUTHCLASSIFY sy-vline
WA_EWASCLSFCLASS_STR-AUTHSEARCH sy-vline
WA_EWASCLSFCLASS_STR-SAME_VALUE_NO sy-vline
WA_EWASCLSFCLASS_STR-SAME_VALUE_W sy-vline
WA_EWASCLSFCLASS_STR-SAME_VALUE_E sy-vline
WA_EWASCLSFCLASS_STR-LOCAL_CLASS sy-vline
WA_EWASCLSFCLASS_STR-KATALOG sy-vline
WA_EWASCLSFCLASS_STR-STANDARD_NAME sy-vline
WA_EWASCLSFCLASS_STR-STANDARD_NO sy-vline
WA_EWASCLSFCLASS_STR-DATE_OF_ISSUE sy-vline
WA_EWASCLSFCLASS_STR-DATE_OF_VERSION sy-vline
WA_EWASCLSFCLASS_STR-NO_OF_VERSION sy-vline
WA_EWASCLSFCLASS_STR-TABULAR_LAYOUT sy-vline
WA_EWASCLSFCLASS_STR-DOCUMENT_NUMBER sy-vline
WA_EWASCLSFCLASS_STR-DOCUMENT_TYPE sy-vline
WA_EWASCLSFCLASS_STR-DOCUMENT_PART sy-vline
WA_EWASCLSFCLASS_STR-DOCUMENT_VERSION sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.