ABAP Select data from SAP table CME_ST_VALUE_MV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CME_ST_VALUE_MV
*  INTO TABLE @DATA(IT_CME_ST_VALUE_MV2).
*--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_CME_ST_VALUE_MV INDEX 1 INTO DATA(WA_CME_ST_VALUE_MV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CME_ST_VALUE_MV>-CLIENT = 1.
<CME_ST_VALUE_MV>-FRG_GUID = 1.
<CME_ST_VALUE_MV>-LINE_ID = 1.
<CME_ST_VALUE_MV>-LEVEL_ID = 1.
<CME_ST_VALUE_MV>-INSTANCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CME_ST_VALUE_MV-SPLITTER, sy-vline,
  WA_CME_ST_VALUE_MV-PREDEC, sy-vline,
  WA_CME_ST_VALUE_MV-VALID_FROM, sy-vline,
  WA_CME_ST_VALUE_MV-VALID_TO, sy-vline,
  WA_CME_ST_VALUE_MV-UPNAME, sy-vline,
  WA_CME_ST_VALUE_MV-HISTEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CME_ST_VALUE_MV 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_CME_ST_VALUE_MV 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_CME_ST_VALUE_MV INTO WA_CME_ST_VALUE_MV.


*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 TSTPS, internal->external for field VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CME_ST_VALUE_MV-VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CME_ST_VALUE_MV-VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CME_ST_VALUE_MV-VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CME_ST_VALUE_MV-VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CME_ST_VALUE_MV-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CME_ST_VALUE_MV-LOGSYS.
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_CME_ST_VALUE_MV_STR, 
CLIENT TYPE STRING,
FRG_GUID TYPE STRING,
LINE_ID TYPE STRING,
LEVEL_ID TYPE STRING,
INSTANCE TYPE STRING,
SPLITTER TYPE STRING,
PREDEC TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
UPNAME TYPE STRING,
HISTEX TYPE STRING,
LOGSYS TYPE STRING,
STRING TYPE STRING,
INT_FROM TYPE STRING,
INT_TO TYPE STRING,
FLT_FROM TYPE STRING,
FLT_TO TYPE STRING,
TMS_FROM TYPE STRING,
TMS_TO TYPE STRING,
PREPARED TYPE STRING,
ACC_FROM TYPE STRING,
ACC_TO TYPE STRING,
UOM_FROM TYPE STRING,
UOM_TO TYPE STRING,
INTERV TYPE STRING,
ORG_INPUT TYPE STRING,
LANG_DATA TYPE STRING,
ORDER_CNT TYPE STRING,
PREINST TYPE STRING,
DEF_VALUE TYPE STRING,
NODE TYPE STRING,
DOCUMENTS TYPE STRING,
ECM_COUNT TYPE STRING,
ECM_DEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CME_ST_VALUE_MV_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_CME_ST_VALUE_MV_STR-CLIENT sy-vline 
WA_CME_ST_VALUE_MV_STR-FRG_GUID sy-vline 
WA_CME_ST_VALUE_MV_STR-LINE_ID sy-vline 
WA_CME_ST_VALUE_MV_STR-LEVEL_ID sy-vline 
WA_CME_ST_VALUE_MV_STR-INSTANCE sy-vline 
WA_CME_ST_VALUE_MV_STR-SPLITTER sy-vline 
WA_CME_ST_VALUE_MV_STR-PREDEC sy-vline 
WA_CME_ST_VALUE_MV_STR-VALID_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-VALID_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-UPNAME sy-vline 
WA_CME_ST_VALUE_MV_STR-HISTEX sy-vline 
WA_CME_ST_VALUE_MV_STR-LOGSYS sy-vline 
WA_CME_ST_VALUE_MV_STR-STRING sy-vline 
WA_CME_ST_VALUE_MV_STR-INT_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-INT_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-FLT_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-FLT_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-TMS_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-TMS_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-PREPARED sy-vline 
WA_CME_ST_VALUE_MV_STR-ACC_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-ACC_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-UOM_FROM sy-vline 
WA_CME_ST_VALUE_MV_STR-UOM_TO sy-vline 
WA_CME_ST_VALUE_MV_STR-INTERV sy-vline 
WA_CME_ST_VALUE_MV_STR-ORG_INPUT sy-vline 
WA_CME_ST_VALUE_MV_STR-LANG_DATA sy-vline 
WA_CME_ST_VALUE_MV_STR-ORDER_CNT sy-vline 
WA_CME_ST_VALUE_MV_STR-PREINST sy-vline 
WA_CME_ST_VALUE_MV_STR-DEF_VALUE sy-vline 
WA_CME_ST_VALUE_MV_STR-NODE sy-vline 
WA_CME_ST_VALUE_MV_STR-DOCUMENTS sy-vline 
WA_CME_ST_VALUE_MV_STR-ECM_COUNT sy-vline 
WA_CME_ST_VALUE_MV_STR-ECM_DEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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