SAP MAM_20_CLASSVALUES ABAP Select data from SAP table
Below is a number of ABAP code snippets to demonstrate how to select data from SAP MAM_20_CLASSVALUES 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 MAM_20_CLASSVALUES. 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 MAM_20_CLASSVALUES 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_MAM_20_CLASSVALUES TYPE STANDARD TABLE OF MAM_20_CLASSVALUES,
WA_MAM_20_CLASSVALUES TYPE MAM_20_CLASSVALUES,
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: <MAM_20_CLASSVALUES> TYPE MAM_20_CLASSVALUES.
*Process all fields in table header/work area as string values
PERFORM process_as_string_field_values CHANGING wa_MAM_20_CLASSVALUES.
SELECT *
*restrict ABAP select to first 10 rows
UP TO 10 ROWS
FROM MAM_20_CLASSVALUES
INTO TABLE IT_MAM_20_CLASSVALUES.
*Select data and declare internal table using in-line method @DATA
*SELECT *
* FROM MAM_20_CLASSVALUES
* INTO TABLE @DATA(IT_MAM_20_CLASSVALUES2).
*--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_MAM_20_CLASSVALUES INDEX 1 INTO DATA(WA_MAM_20_CLASSVALUES2).
*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MAM_20_CLASSVALUES ASSIGNING <MAM_20_CLASSVALUES>.
*To update a field value using a field symbol simply change the value via the field symbol pointer<MAM_20_CLASSVALUES>-TYPE = 1.
<MAM_20_CLASSVALUES>-CHARACT = 1.
<MAM_20_CLASSVALUES>-VALUE_CHAR = 1.
<MAM_20_CLASSVALUES>-VALUE_TO = 1.
<MAM_20_CLASSVALUES>-VALUE_RELATION = 1.
ENDLOOP. LOOP AT IT_MAM_20_CLASSVALUES INTO WA_MAM_20_CLASSVALUES. *Write horizonal line to screen report. WRITE:/ sy-uline. *Write selected data to screen/report before conversion. WRITE:/ sy-vline, WA_MAM_20_CLASSVALUES-CURRENCY_FROM, sy-vline,
WA_MAM_20_CLASSVALUES-CURRENCY_TO, sy-vline,
WA_MAM_20_CLASSVALUES-UNIT_FROM, sy-vline,
WA_MAM_20_CLASSVALUES-UNIT_TO, sy-vline,
WA_MAM_20_CLASSVALUES-INHERITED, sy-vline,
WA_MAM_20_CLASSVALUES-INSTANCE, sy-vline.
ENDLOOP. *Add any further fields from structure WA_MAM_20_CLASSVALUES 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_MAM_20_CLASSVALUES 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_MAM_20_CLASSVALUES INTO WA_MAM_20_CLASSVALUES. *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 CUNIT, internal->external for field UNIT_FROM CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_MAM_20_CLASSVALUES-UNIT_FROM IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_CLASSVALUES-UNIT_FROM.
WRITE:/ 'New Value:', ld_input.
*Conversion exit CUNIT, internal->external for field UNIT_TO CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT' EXPORTING input = WA_MAM_20_CLASSVALUES-UNIT_TO IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_CLASSVALUES-UNIT_TO.
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_MAM_20_CLASSVALUES_STR,
TYPE TYPE STRING,
CHARACT TYPE STRING,
VALUE_CHAR TYPE STRING,
VALUE_TO TYPE STRING,
VALUE_RELATION TYPE STRING,
CURRENCY_FROM TYPE STRING,
CURRENCY_TO TYPE STRING,
UNIT_FROM TYPE STRING,
UNIT_TO TYPE STRING,
INHERITED TYPE STRING,
INSTANCE TYPE STRING,
VALUE_NEUTRAL TYPE STRING,
CHARACT_DESCR TYPE STRING,END OF T_EKKO_STR. DATA: WA_MAM_20_CLASSVALUES_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_MAM_20_CLASSVALUES_STR-TYPE sy-vline
WA_MAM_20_CLASSVALUES_STR-CHARACT sy-vline
WA_MAM_20_CLASSVALUES_STR-VALUE_CHAR sy-vline
WA_MAM_20_CLASSVALUES_STR-VALUE_TO sy-vline
WA_MAM_20_CLASSVALUES_STR-VALUE_RELATION sy-vline
WA_MAM_20_CLASSVALUES_STR-CURRENCY_FROM sy-vline
WA_MAM_20_CLASSVALUES_STR-CURRENCY_TO sy-vline
WA_MAM_20_CLASSVALUES_STR-UNIT_FROM sy-vline
WA_MAM_20_CLASSVALUES_STR-UNIT_TO sy-vline
WA_MAM_20_CLASSVALUES_STR-INHERITED sy-vline
WA_MAM_20_CLASSVALUES_STR-INSTANCE sy-vline
WA_MAM_20_CLASSVALUES_STR-VALUE_NEUTRAL sy-vline
WA_MAM_20_CLASSVALUES_STR-CHARACT_DESCR sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.
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