ABAP Select data from SAP table /SCWM/S_RSRC_MON_IN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_RSRC_MON_IN 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 /SCWM/S_RSRC_MON_IN. 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 /SCWM/S_RSRC_MON_IN 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_/SCWM/S_RSRC_MON_IN TYPE STANDARD TABLE OF /SCWM/S_RSRC_MON_IN,
      WA_/SCWM/S_RSRC_MON_IN TYPE /SCWM/S_RSRC_MON_IN,
      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: </SCWM/S_RSRC_MON_IN> TYPE /SCWM/S_RSRC_MON_IN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_RSRC_MON_IN
  INTO TABLE IT_/SCWM/S_RSRC_MON_IN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_RSRC_MON_IN
*  INTO TABLE @DATA(IT_/SCWM/S_RSRC_MON_IN2).
*--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_/SCWM/S_RSRC_MON_IN INDEX 1 INTO DATA(WA_/SCWM/S_RSRC_MON_IN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_RSRC_MON_IN ASSIGNING </SCWM/S_RSRC_MON_IN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_RSRC_MON_IN>-MANDT = 1.
</SCWM/S_RSRC_MON_IN>-LGNUM = 1.
</SCWM/S_RSRC_MON_IN>-RSRC_SEL = 1.
</SCWM/S_RSRC_MON_IN>-RSRC_TYPE_SEL = 1.
</SCWM/S_RSRC_MON_IN>-RSRC_GRP_SEL = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_RSRC_MON_IN INTO WA_/SCWM/S_RSRC_MON_IN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_RSRC_MON_IN-UNAME_SEL, sy-vline,
  WA_/SCWM/S_RSRC_MON_IN-QUEUE_SEL, sy-vline,
  WA_/SCWM/S_RSRC_MON_IN-ACT_Q_SEL, sy-vline,
  WA_/SCWM/S_RSRC_MON_IN-RFIND_SEL, sy-vline,
  WA_/SCWM/S_RSRC_MON_IN-PRSN_PRF_SEL, sy-vline,
  WA_/SCWM/S_RSRC_MON_IN-RFRSRC_SEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_RSRC_MON_IN 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_/SCWM/S_RSRC_MON_IN 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_/SCWM/S_RSRC_MON_IN INTO WA_/SCWM/S_RSRC_MON_IN.


*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 ALPH0, internal->external for field WHO_SEL
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RSRC_MON_IN-WHO_SEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RSRC_MON_IN-WHO_SEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PROCR, internal->external for field PROC_SEL
CALL FUNCTION 'CONVERSION_EXIT_PROCR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_RSRC_MON_IN-PROC_SEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_RSRC_MON_IN-PROC_SEL.
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_/SCWM/S_RSRC_MON_IN_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
RSRC_SEL TYPE STRING,
RSRC_TYPE_SEL TYPE STRING,
RSRC_GRP_SEL TYPE STRING,
UNAME_SEL TYPE STRING,
QUEUE_SEL TYPE STRING,
ACT_Q_SEL TYPE STRING,
RFIND_SEL TYPE STRING,
PRSN_PRF_SEL TYPE STRING,
RFRSRC_SEL TYPE STRING,
WHO_SEL TYPE STRING,
WCR_SEL TYPE STRING,
TYPE_SEL TYPE STRING,
STATUS_SEL TYPE STRING,
AAWHO_SEL TYPE STRING,
PROC_SEL TYPE STRING,
WO_CREDT_SEL TYPE STRING,
WO_STRDT_SEL TYPE STRING,
WO_LSDT_SEL TYPE STRING,
DATA_ENTRY TYPE STRING,
LTRANS_SEL TYPE STRING,
MSGTY_SEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_RSRC_MON_IN_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_/SCWM/S_RSRC_MON_IN_STR-MANDT sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-LGNUM sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-RSRC_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-RSRC_TYPE_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-RSRC_GRP_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-UNAME_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-QUEUE_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-ACT_Q_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-RFIND_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-PRSN_PRF_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-RFRSRC_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-WHO_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-WCR_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-TYPE_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-STATUS_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-AAWHO_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-PROC_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-WO_CREDT_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-WO_STRDT_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-WO_LSDT_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-DATA_ENTRY sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-LTRANS_SEL sy-vline 
WA_/SCWM/S_RSRC_MON_IN_STR-MSGTY_SEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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