ABAP Select data from SAP table MSM_GRAPH_MONITOR_PARMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSM_GRAPH_MONITOR_PARMS
*  INTO TABLE @DATA(IT_MSM_GRAPH_MONITOR_PARMS2).
*--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_MSM_GRAPH_MONITOR_PARMS INDEX 1 INTO DATA(WA_MSM_GRAPH_MONITOR_PARMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSM_GRAPH_MONITOR_PARMS>-PERIOD_W = 1.
<MSM_GRAPH_MONITOR_PARMS>-PERIOD_D = 1.
<MSM_GRAPH_MONITOR_PARMS>-PERIOD_H = 1.
<MSM_GRAPH_MONITOR_PARMS>-PERIOD_M = 1.
<MSM_GRAPH_MONITOR_PARMS>-PERIOD_NULL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSM_GRAPH_MONITOR_PARMS-PERIOD_VALUE, sy-vline,
  WA_MSM_GRAPH_MONITOR_PARMS-PERIOD_FACTOR, sy-vline,
  WA_MSM_GRAPH_MONITOR_PARMS-BACKLOG_W, sy-vline,
  WA_MSM_GRAPH_MONITOR_PARMS-BACKLOG_D, sy-vline,
  WA_MSM_GRAPH_MONITOR_PARMS-BACKLOG_H, sy-vline,
  WA_MSM_GRAPH_MONITOR_PARMS-BACKLOG_M, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSM_GRAPH_MONITOR_PARMS 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_MSM_GRAPH_MONITOR_PARMS 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_MSM_GRAPH_MONITOR_PARMS INTO WA_MSM_GRAPH_MONITOR_PARMS.


*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_MSM_GRAPH_MONITOR_PARMS_STR, 
PERIOD_W TYPE STRING,
PERIOD_D TYPE STRING,
PERIOD_H TYPE STRING,
PERIOD_M TYPE STRING,
PERIOD_NULL TYPE STRING,
PERIOD_VALUE TYPE STRING,
PERIOD_FACTOR TYPE STRING,
BACKLOG_W TYPE STRING,
BACKLOG_D TYPE STRING,
BACKLOG_H TYPE STRING,
BACKLOG_M TYPE STRING,
BACKLOG_NULL TYPE STRING,
BACKLOG_VALUE TYPE STRING,
BACKLOG_FACTOR TYPE STRING,
DISPLAY_D TYPE STRING,
DISPLAY_H TYPE STRING,
DISPLAY_M TYPE STRING,
WORKCENTER TYPE STRING,
PLANT TYPE STRING,
PRF_GRUPPE TYPE STRING,
PRF_NAME TYPE STRING,
PRF_INDEX TYPE STRING,
TIME_INTERVAL TYPE STRING,
DATE_FROM TYPE STRING,
DATE_UNTIL TYPE STRING,
EXTERN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSM_GRAPH_MONITOR_PARMS_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_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_W sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_D sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_H sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_M sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_NULL sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_VALUE sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PERIOD_FACTOR sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_W sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_D sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_H sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_M sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_NULL sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_VALUE sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-BACKLOG_FACTOR sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-DISPLAY_D sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-DISPLAY_H sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-DISPLAY_M sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-WORKCENTER sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PLANT sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PRF_GRUPPE sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PRF_NAME sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-PRF_INDEX sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-TIME_INTERVAL sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-DATE_FROM sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-DATE_UNTIL sy-vline 
WA_MSM_GRAPH_MONITOR_PARMS_STR-EXTERN sy-vline      INTO ld_text SEPARATED BY SPACE.

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