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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MRSS/T_RM_SELF_BOOK_UI
*  INTO TABLE @DATA(IT_/MRSS/T_RM_SELF_BOOK_UI2).
*--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_RM_SELF_BOOK_UI INDEX 1 INTO DATA(WA_/MRSS/T_RM_SELF_BOOK_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MRSS/T_RM_SELF_BOOK_UI>-CANDIDATE_ID = 1.
</MRSS/T_RM_SELF_BOOK_UI>-NAME = 1.
</MRSS/T_RM_SELF_BOOK_UI>-TYPE = 1.
</MRSS/T_RM_SELF_BOOK_UI>-TYPE_DESC = 1.
</MRSS/T_RM_SELF_BOOK_UI>-REQUESTING_COUNTRY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTING_COUNTRY_DESC, sy-vline,
  WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTER_LOB_ID, sy-vline,
  WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTER_LOB_DESC, sy-vline,
  WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTER_ID, sy-vline,
  WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTER_NAME, sy-vline,
  WA_/MRSS/T_RM_SELF_BOOK_UI-REQUESTER_INO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MRSS/T_RM_SELF_BOOK_UI 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_RM_SELF_BOOK_UI 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_RM_SELF_BOOK_UI INTO WA_/MRSS/T_RM_SELF_BOOK_UI.


*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 ALPHA, internal->external for field CUSTOMER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_SELF_BOOK_UI-CUSTOMER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_SELF_BOOK_UI-CUSTOMER_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILLING_OBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_SELF_BOOK_UI-BILLING_OBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_SELF_BOOK_UI-BILLING_OBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field PROJECT_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/MRSS/T_RM_SELF_BOOK_UI-PROJECT_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MRSS/T_RM_SELF_BOOK_UI-PROJECT_LANGU.
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_/MRSS/T_RM_SELF_BOOK_UI_STR, 
CANDIDATE_ID TYPE STRING,
NAME TYPE STRING,
TYPE TYPE STRING,
TYPE_DESC TYPE STRING,
REQUESTING_COUNTRY_ID TYPE STRING,
REQUESTING_COUNTRY_DESC TYPE STRING,
REQUESTER_LOB_ID TYPE STRING,
REQUESTER_LOB_DESC TYPE STRING,
REQUESTER_ID TYPE STRING,
REQUESTER_NAME TYPE STRING,
REQUESTER_INO TYPE STRING,
CUSTOMER_ID TYPE STRING,
CORPORATE_COMP_ID TYPE STRING,
CORPORATE_COMP_DESC TYPE STRING,
CUSTOMER_NAME TYPE STRING,
CUSTOMER_NAME_USER TYPE STRING,
CUSTOMER_CLASS TYPE STRING,
CUSTOMER_INDUSTRY TYPE STRING,
BILLING_OBJECT_TYPE TYPE STRING,
BILLING_OBJECT TYPE STRING,
RESPONSIBLE_RM_ORG TYPE STRING,
CORPORATE_ORG_ID TYPE STRING,
CORPORATE_ORG_DESC TYPE STRING,
PRESALES TYPE STRING,
LOCATION TYPE STRING,
PROJECT_LANGU TYPE STRING,
PROJECT_STATE_ID TYPE STRING,
PROJECT_STATE_DESC TYPE STRING,
PROJECT_COUNTRY_ID TYPE STRING,
PROJECT_COUNTRY_DESC TYPE STRING,
DESCRIPTION TYPE STRING,
ROLE_SCOPE_TEXT TYPE STRING,
COMP_PROFILE_ID TYPE STRING,
COMP_PROF_DESC TYPE STRING,
SOL_PROFILE_ID TYPE STRING,
SOL_PROFILE_DESC TYPE STRING,
ASSIGNMENT_DESC TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
ASSIGNED_DAYS TYPE STRING,
STAFFED_DAYS TYPE STRING,
REQ_DAYS TYPE STRING,
DUR_TYPE TYPE STRING,
FOURBYTEN TYPE STRING,
SMART_DIST TYPE STRING,
MON TYPE STRING,
TUES TYPE STRING,
WED TYPE STRING,
THUR TYPE STRING,
FRI TYPE STRING,
SAT TYPE STRING,
SUN TYPE STRING,
FIXED_ST_DATE TYPE STRING,
FIXED_END_DATE TYPE STRING,
ASSIGNMENT_TYPE TYPE STRING,
ASSIGNMENT_TYPE_DESC TYPE STRING,
RM_ASSIGNMENT_TYPE TYPE STRING,
RM_ASSIGNMENT_TYPE_DESC TYPE STRING,
DAYS_MONTH TYPE STRING,
NUM_MONTHS TYPE STRING,
MONTH_START_DATE TYPE STRING,
ROLE_TYPE_ID TYPE STRING,
ROLE_TYPE_DESC TYPE STRING,
REMOTE TYPE STRING,
FS_ENBL TYPE STRING,
CORP_ENBL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MRSS/T_RM_SELF_BOOK_UI_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_RM_SELF_BOOK_UI_STR-CANDIDATE_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-NAME sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-TYPE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-TYPE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTING_COUNTRY_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTING_COUNTRY_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTER_LOB_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTER_LOB_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTER_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTER_NAME sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQUESTER_INO sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CUSTOMER_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CORPORATE_COMP_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CORPORATE_COMP_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CUSTOMER_NAME sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CUSTOMER_NAME_USER sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CUSTOMER_CLASS sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CUSTOMER_INDUSTRY sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-BILLING_OBJECT_TYPE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-BILLING_OBJECT sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-RESPONSIBLE_RM_ORG sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CORPORATE_ORG_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CORPORATE_ORG_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PRESALES sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-LOCATION sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PROJECT_LANGU sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PROJECT_STATE_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PROJECT_STATE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PROJECT_COUNTRY_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-PROJECT_COUNTRY_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-DESCRIPTION sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ROLE_SCOPE_TEXT sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-COMP_PROFILE_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-COMP_PROF_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-SOL_PROFILE_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-SOL_PROFILE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ASSIGNMENT_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-STARTDATE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ENDDATE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ASSIGNED_DAYS sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-STAFFED_DAYS sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REQ_DAYS sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-DUR_TYPE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-FOURBYTEN sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-SMART_DIST sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-MON sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-TUES sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-WED sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-THUR sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-FRI sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-SAT sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-SUN sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-FIXED_ST_DATE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-FIXED_END_DATE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ASSIGNMENT_TYPE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ASSIGNMENT_TYPE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-RM_ASSIGNMENT_TYPE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-RM_ASSIGNMENT_TYPE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-DAYS_MONTH sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-NUM_MONTHS sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-MONTH_START_DATE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ROLE_TYPE_ID sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-ROLE_TYPE_DESC sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-REMOTE sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-FS_ENBL sy-vline 
WA_/MRSS/T_RM_SELF_BOOK_UI_STR-CORP_ENBL sy-vline      INTO ld_text SEPARATED BY SPACE.

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