ABAP Select data from SAP table /MRSS/T_SGU_SUB into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_SGU_SUB
*  INTO TABLE @DATA(IT_/MRSS/T_SGU_SUB2).
*--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_/MRSS/T_SGU_SUB INDEX 1 INTO DATA(WA_/MRSS/T_SGU_SUB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_SGU_SUB>-RESOURCE_NAME = 1.
</MRSS/T_SGU_SUB>-PERNR = 1.
</MRSS/T_SGU_SUB>-SUBTY = 1.
</MRSS/T_SGU_SUB>-OBJPS = 1.
</MRSS/T_SGU_SUB>-SPRPS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_SGU_SUB-ENDDA, sy-vline,
  WA_/MRSS/T_SGU_SUB-BEGDA, sy-vline,
  WA_/MRSS/T_SGU_SUB-SEQNR, sy-vline,
  WA_/MRSS/T_SGU_SUB-RESOURCE_KEY, sy-vline,
  WA_/MRSS/T_SGU_SUB-HR_SUBTY, sy-vline,
  WA_/MRSS/T_SGU_SUB-VTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_SGU_SUB 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_/MRSS/T_SGU_SUB 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_/MRSS/T_SGU_SUB INTO WA_/MRSS/T_SGU_SUB.


*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_/MRSS/T_SGU_SUB_STR, 
RESOURCE_NAME TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
RESOURCE_KEY TYPE STRING,
HR_SUBTY TYPE STRING,
VTEXT TYPE STRING,
BEG_DATE TYPE STRING,
END_DATE TYPE STRING,
TPROG TYPE STRING,
TPTXT TYPE STRING,
CUT_PLANNING_HORIZON TYPE STRING,
IS_DEL_REL TYPE STRING,
VARIA TYPE STRING,
STATUS TYPE STRING,
STATUS_DEL_REL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_SGU_SUB_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_/MRSS/T_SGU_SUB_STR-RESOURCE_NAME sy-vline 
WA_/MRSS/T_SGU_SUB_STR-PERNR sy-vline 
WA_/MRSS/T_SGU_SUB_STR-SUBTY sy-vline 
WA_/MRSS/T_SGU_SUB_STR-OBJPS sy-vline 
WA_/MRSS/T_SGU_SUB_STR-SPRPS sy-vline 
WA_/MRSS/T_SGU_SUB_STR-ENDDA sy-vline 
WA_/MRSS/T_SGU_SUB_STR-BEGDA sy-vline 
WA_/MRSS/T_SGU_SUB_STR-SEQNR sy-vline 
WA_/MRSS/T_SGU_SUB_STR-RESOURCE_KEY sy-vline 
WA_/MRSS/T_SGU_SUB_STR-HR_SUBTY sy-vline 
WA_/MRSS/T_SGU_SUB_STR-VTEXT sy-vline 
WA_/MRSS/T_SGU_SUB_STR-BEG_DATE sy-vline 
WA_/MRSS/T_SGU_SUB_STR-END_DATE sy-vline 
WA_/MRSS/T_SGU_SUB_STR-TPROG sy-vline 
WA_/MRSS/T_SGU_SUB_STR-TPTXT sy-vline 
WA_/MRSS/T_SGU_SUB_STR-CUT_PLANNING_HORIZON sy-vline 
WA_/MRSS/T_SGU_SUB_STR-IS_DEL_REL sy-vline 
WA_/MRSS/T_SGU_SUB_STR-VARIA sy-vline 
WA_/MRSS/T_SGU_SUB_STR-STATUS sy-vline 
WA_/MRSS/T_SGU_SUB_STR-STATUS_DEL_REL sy-vline      INTO ld_text SEPARATED BY SPACE.

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