ABAP Select data from SAP table MPES_RTGP_OPR_SPC_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_RTGP_OPR_SPC_I
*  INTO TABLE @DATA(IT_MPES_RTGP_OPR_SPC_I2).
*--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_MPES_RTGP_OPR_SPC_I INDEX 1 INTO DATA(WA_MPES_RTGP_OPR_SPC_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_RTGP_OPR_SPC_I>-UEMUS = 1.
<MPES_RTGP_OPR_SPC_I>-UEKAN = 1.
<MPES_RTGP_OPR_SPC_I>-FLIES = 1.
<MPES_RTGP_OPR_SPC_I>-ZEIMU = 1.
<MPES_RTGP_OPR_SPC_I>-ZMINU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_RTGP_OPR_SPC_I-MINWE, sy-vline,
  WA_MPES_RTGP_OPR_SPC_I-SPMUS, sy-vline,
  WA_MPES_RTGP_OPR_SPC_I-SPLIM, sy-vline,
  WA_MPES_RTGP_OPR_SPC_I-ZEIMB, sy-vline,
  WA_MPES_RTGP_OPR_SPC_I-ZMINB, sy-vline,
  WA_MPES_RTGP_OPR_SPC_I-ZEILM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_RTGP_OPR_SPC_I 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_MPES_RTGP_OPR_SPC_I 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_MPES_RTGP_OPR_SPC_I INTO WA_MPES_RTGP_OPR_SPC_I.


*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 CUNIT, internal->external for field ZEIMU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEIMU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEIMU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEIMB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEIMB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEIMB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEILM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEILM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEILM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEILP
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEILP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEILP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEIWN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEIWN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEIWN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEIWM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEIWM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEIWM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEITN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEITN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEITN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZEITM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_RTGP_OPR_SPC_I-ZEITM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_RTGP_OPR_SPC_I-ZEITM.
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_MPES_RTGP_OPR_SPC_I_STR, 
UEMUS TYPE STRING,
UEKAN TYPE STRING,
FLIES TYPE STRING,
ZEIMU TYPE STRING,
ZMINU TYPE STRING,
MINWE TYPE STRING,
SPMUS TYPE STRING,
SPLIM TYPE STRING,
ZEIMB TYPE STRING,
ZMINB TYPE STRING,
ZEILM TYPE STRING,
ZLMAX TYPE STRING,
ZEILP TYPE STRING,
ZLPRO TYPE STRING,
ZEIWN TYPE STRING,
ZWNOR TYPE STRING,
ZEIWM TYPE STRING,
ZWMIN TYPE STRING,
ZEITN TYPE STRING,
ZTNOR TYPE STRING,
ZEITM TYPE STRING,
ZTMIN TYPE STRING,
ABLIPKZ TYPE STRING,
RSTRA TYPE STRING,
VERDART TYPE STRING,
UAVO_AUFL TYPE STRING,
UENICHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_RTGP_OPR_SPC_I_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_MPES_RTGP_OPR_SPC_I_STR-UEMUS sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-UEKAN sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-FLIES sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEIMU sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZMINU sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-MINWE sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-SPMUS sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-SPLIM sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEIMB sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZMINB sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEILM sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZLMAX sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEILP sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZLPRO sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEIWN sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZWNOR sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEIWM sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZWMIN sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEITN sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZTNOR sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZEITM sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ZTMIN sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-ABLIPKZ sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-RSTRA sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-VERDART sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-UAVO_AUFL sy-vline 
WA_MPES_RTGP_OPR_SPC_I_STR-UENICHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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