ABAP Select data from SAP table UMM_YS_MC_PERS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UMM_YS_MC_PERS
*  INTO TABLE @DATA(IT_UMM_YS_MC_PERS2).
*--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_UMM_YS_MC_PERS INDEX 1 INTO DATA(WA_UMM_YS_MC_PERS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UMM_YS_MC_PERS>-DESIGNATION = 1.
<UMM_YS_MC_PERS>-PERS_TYPE = 1.
<UMM_YS_MC_PERS>-VANAME = 1.
<UMM_YS_MC_PERS>-DISPSEQ = 1.
<UMM_YS_MC_PERS>-LTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UMM_YS_MC_PERS-MTXT, sy-vline,
  WA_UMM_YS_MC_PERS-STXT, sy-vline,
  WA_UMM_YS_MC_PERS-SIGN, sy-vline,
  WA_UMM_YS_MC_PERS-OPER, sy-vline,
  WA_UMM_YS_MC_PERS-LOW, sy-vline,
  WA_UMM_YS_MC_PERS-LOWBW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UMM_YS_MC_PERS 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_UMM_YS_MC_PERS 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_UMM_YS_MC_PERS INTO WA_UMM_YS_MC_PERS.


*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_UMM_YS_MC_PERS_STR, 
DESIGNATION TYPE STRING,
PERS_TYPE TYPE STRING,
VANAME TYPE STRING,
DISPSEQ TYPE STRING,
LTXT TYPE STRING,
MTXT TYPE STRING,
STXT TYPE STRING,
SIGN TYPE STRING,
OPER TYPE STRING,
LOW TYPE STRING,
LOWBW TYPE STRING,
LOWBW_EXT TYPE STRING,
HIGH TYPE STRING,
HIGHBW TYPE STRING,
HIGHBW_EXT TYPE STRING,
HINAME TYPE STRING,
HINAMEBW TYPE STRING,
HINODE TYPE STRING,
HINODEBW TYPE STRING,
HINODEBW_EXT TYPE STRING,
HIVERS TYPE STRING,
HIDATE TYPE STRING,
HI_LTXT TYPE STRING,
HINODE_LTXT TYPE STRING,
CONAME TYPE STRING,
PRINTTYPE TYPE STRING,
FILTER TYPE STRING,
STYLESHEET TYPE STRING,
VIEWTYPE TYPE STRING,
WANO TYPE STRING,
LVNO TYPE STRING,
FRNO TYPE STRING,
PSTATUS TYPE STRING,
FRTYPE TYPE STRING,
FRNAME TYPE STRING,
MEASDEF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UMM_YS_MC_PERS_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_UMM_YS_MC_PERS_STR-DESIGNATION sy-vline 
WA_UMM_YS_MC_PERS_STR-PERS_TYPE sy-vline 
WA_UMM_YS_MC_PERS_STR-VANAME sy-vline 
WA_UMM_YS_MC_PERS_STR-DISPSEQ sy-vline 
WA_UMM_YS_MC_PERS_STR-LTXT sy-vline 
WA_UMM_YS_MC_PERS_STR-MTXT sy-vline 
WA_UMM_YS_MC_PERS_STR-STXT sy-vline 
WA_UMM_YS_MC_PERS_STR-SIGN sy-vline 
WA_UMM_YS_MC_PERS_STR-OPER sy-vline 
WA_UMM_YS_MC_PERS_STR-LOW sy-vline 
WA_UMM_YS_MC_PERS_STR-LOWBW sy-vline 
WA_UMM_YS_MC_PERS_STR-LOWBW_EXT sy-vline 
WA_UMM_YS_MC_PERS_STR-HIGH sy-vline 
WA_UMM_YS_MC_PERS_STR-HIGHBW sy-vline 
WA_UMM_YS_MC_PERS_STR-HIGHBW_EXT sy-vline 
WA_UMM_YS_MC_PERS_STR-HINAME sy-vline 
WA_UMM_YS_MC_PERS_STR-HINAMEBW sy-vline 
WA_UMM_YS_MC_PERS_STR-HINODE sy-vline 
WA_UMM_YS_MC_PERS_STR-HINODEBW sy-vline 
WA_UMM_YS_MC_PERS_STR-HINODEBW_EXT sy-vline 
WA_UMM_YS_MC_PERS_STR-HIVERS sy-vline 
WA_UMM_YS_MC_PERS_STR-HIDATE sy-vline 
WA_UMM_YS_MC_PERS_STR-HI_LTXT sy-vline 
WA_UMM_YS_MC_PERS_STR-HINODE_LTXT sy-vline 
WA_UMM_YS_MC_PERS_STR-CONAME sy-vline 
WA_UMM_YS_MC_PERS_STR-PRINTTYPE sy-vline 
WA_UMM_YS_MC_PERS_STR-FILTER sy-vline 
WA_UMM_YS_MC_PERS_STR-STYLESHEET sy-vline 
WA_UMM_YS_MC_PERS_STR-VIEWTYPE sy-vline 
WA_UMM_YS_MC_PERS_STR-WANO sy-vline 
WA_UMM_YS_MC_PERS_STR-LVNO sy-vline 
WA_UMM_YS_MC_PERS_STR-FRNO sy-vline 
WA_UMM_YS_MC_PERS_STR-PSTATUS sy-vline 
WA_UMM_YS_MC_PERS_STR-FRTYPE sy-vline 
WA_UMM_YS_MC_PERS_STR-FRNAME sy-vline 
WA_UMM_YS_MC_PERS_STR-MEASDEF sy-vline      INTO ld_text SEPARATED BY SPACE.

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