ABAP Select data from SAP table PIQMBSS_MODREG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQMBSS_MODREG
*  INTO TABLE @DATA(IT_PIQMBSS_MODREG2).
*--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_PIQMBSS_MODREG INDEX 1 INTO DATA(WA_PIQMBSS_MODREG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQMBSS_MODREG>-MANDT = 1.
<PIQMBSS_MODREG>-PLVAR = 1.
<PIQMBSS_MODREG>-OTYPE = 1.
<PIQMBSS_MODREG>-OBJID = 1.
<PIQMBSS_MODREG>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQMBSS_MODREG-SUBTY, sy-vline,
  WA_PIQMBSS_MODREG-ISTAT, sy-vline,
  WA_PIQMBSS_MODREG-PRIOX, sy-vline,
  WA_PIQMBSS_MODREG-BEGDA, sy-vline,
  WA_PIQMBSS_MODREG-ENDDA, sy-vline,
  WA_PIQMBSS_MODREG-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQMBSS_MODREG 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_PIQMBSS_MODREG 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_PIQMBSS_MODREG INTO WA_PIQMBSS_MODREG.


*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 CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQMBSS_MODREG-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQMBSS_MODREG-CPUNIT.
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_PIQMBSS_MODREG_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
SMSTATUS TYPE STRING,
STORREASON TYPE STRING,
STORDATE TYPE STRING,
CPATTEMP TYPE STRING,
CPGAINED TYPE STRING,
CPUNIT TYPE STRING,
NORM_VAL TYPE STRING,
BOOKDATE TYPE STRING,
BOOKTIME TYPE STRING,
SMRATING TYPE STRING,
CHARGEFREE TYPE STRING,
TRANSFERFLAG TYPE STRING,
PACKNUMBER TYPE STRING,
VARID TYPE STRING,
PERID TYPE STRING,
PERYR TYPE STRING,
ALT_SCALEID TYPE STRING,
ID TYPE STRING,
BOOKREASON TYPE STRING,
ANNULMENT TYPE STRING,
LOCKFLAG TYPE STRING,
COBOK TYPE STRING,
BOOKING_SUBGROUP_ID TYPE STRING,
ATTNO_TW TYPE STRING,
MODULE_ID TYPE STRING,
MODULE_SHORT TYPE STRING,
MODULE_STEXT TYPE STRING,
PERYT TYPE STRING,
PERIT TYPE STRING,
EVPACKAGET TYPE STRING,
SMSTATUST TYPE STRING,
BOOKREASONT TYPE STRING,
STORREASONT TYPE STRING,
SMRATINGT TYPE STRING,
ANNULMENTT TYPE STRING,
PROGRAM_OBJID TYPE STRING,
STUDY_OBJID TYPE STRING,
PROGRAM_SHORT TYPE STRING,
PROGRAM_STEXT TYPE STRING,
PROGRAM_TYPE TYPE STRING,
PROGRAM_TYPET TYPE STRING,
MODULE_SCALE_ID TYPE STRING,
SCALE_TEXT TYPE STRING,
CPUNIT_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQMBSS_MODREG_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_PIQMBSS_MODREG_STR-MANDT sy-vline 
WA_PIQMBSS_MODREG_STR-PLVAR sy-vline 
WA_PIQMBSS_MODREG_STR-OTYPE sy-vline 
WA_PIQMBSS_MODREG_STR-OBJID sy-vline 
WA_PIQMBSS_MODREG_STR-INFTY sy-vline 
WA_PIQMBSS_MODREG_STR-SUBTY sy-vline 
WA_PIQMBSS_MODREG_STR-ISTAT sy-vline 
WA_PIQMBSS_MODREG_STR-PRIOX sy-vline 
WA_PIQMBSS_MODREG_STR-BEGDA sy-vline 
WA_PIQMBSS_MODREG_STR-ENDDA sy-vline 
WA_PIQMBSS_MODREG_STR-VARYF sy-vline 
WA_PIQMBSS_MODREG_STR-SEQNR sy-vline 
WA_PIQMBSS_MODREG_STR-SMSTATUS sy-vline 
WA_PIQMBSS_MODREG_STR-STORREASON sy-vline 
WA_PIQMBSS_MODREG_STR-STORDATE sy-vline 
WA_PIQMBSS_MODREG_STR-CPATTEMP sy-vline 
WA_PIQMBSS_MODREG_STR-CPGAINED sy-vline 
WA_PIQMBSS_MODREG_STR-CPUNIT sy-vline 
WA_PIQMBSS_MODREG_STR-NORM_VAL sy-vline 
WA_PIQMBSS_MODREG_STR-BOOKDATE sy-vline 
WA_PIQMBSS_MODREG_STR-BOOKTIME sy-vline 
WA_PIQMBSS_MODREG_STR-SMRATING sy-vline 
WA_PIQMBSS_MODREG_STR-CHARGEFREE sy-vline 
WA_PIQMBSS_MODREG_STR-TRANSFERFLAG sy-vline 
WA_PIQMBSS_MODREG_STR-PACKNUMBER sy-vline 
WA_PIQMBSS_MODREG_STR-VARID sy-vline 
WA_PIQMBSS_MODREG_STR-PERID sy-vline 
WA_PIQMBSS_MODREG_STR-PERYR sy-vline 
WA_PIQMBSS_MODREG_STR-ALT_SCALEID sy-vline 
WA_PIQMBSS_MODREG_STR-ID sy-vline 
WA_PIQMBSS_MODREG_STR-BOOKREASON sy-vline 
WA_PIQMBSS_MODREG_STR-ANNULMENT sy-vline 
WA_PIQMBSS_MODREG_STR-LOCKFLAG sy-vline 
WA_PIQMBSS_MODREG_STR-COBOK sy-vline 
WA_PIQMBSS_MODREG_STR-BOOKING_SUBGROUP_ID sy-vline 
WA_PIQMBSS_MODREG_STR-ATTNO_TW sy-vline 
WA_PIQMBSS_MODREG_STR-MODULE_ID sy-vline 
WA_PIQMBSS_MODREG_STR-MODULE_SHORT sy-vline 
WA_PIQMBSS_MODREG_STR-MODULE_STEXT sy-vline 
WA_PIQMBSS_MODREG_STR-PERYT sy-vline 
WA_PIQMBSS_MODREG_STR-PERIT sy-vline 
WA_PIQMBSS_MODREG_STR-EVPACKAGET sy-vline 
WA_PIQMBSS_MODREG_STR-SMSTATUST sy-vline 
WA_PIQMBSS_MODREG_STR-BOOKREASONT sy-vline 
WA_PIQMBSS_MODREG_STR-STORREASONT sy-vline 
WA_PIQMBSS_MODREG_STR-SMRATINGT sy-vline 
WA_PIQMBSS_MODREG_STR-ANNULMENTT sy-vline 
WA_PIQMBSS_MODREG_STR-PROGRAM_OBJID sy-vline 
WA_PIQMBSS_MODREG_STR-STUDY_OBJID sy-vline 
WA_PIQMBSS_MODREG_STR-PROGRAM_SHORT sy-vline 
WA_PIQMBSS_MODREG_STR-PROGRAM_STEXT sy-vline 
WA_PIQMBSS_MODREG_STR-PROGRAM_TYPE sy-vline 
WA_PIQMBSS_MODREG_STR-PROGRAM_TYPET sy-vline 
WA_PIQMBSS_MODREG_STR-MODULE_SCALE_ID sy-vline 
WA_PIQMBSS_MODREG_STR-SCALE_TEXT sy-vline 
WA_PIQMBSS_MODREG_STR-CPUNIT_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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