ABAP Select data from SAP table PIQEDTC_SYSTEM_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQEDTC_SYSTEM_DISP
*  INTO TABLE @DATA(IT_PIQEDTC_SYSTEM_DISP2).
*--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_PIQEDTC_SYSTEM_DISP INDEX 1 INTO DATA(WA_PIQEDTC_SYSTEM_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQEDTC_SYSTEM_DISP>-GRP_EX = 1.
<PIQEDTC_SYSTEM_DISP>-OTYPE_EX = 1.
<PIQEDTC_SYSTEM_DISP>-OBJID_EX = 1.
<PIQEDTC_SYSTEM_DISP>-COREPEATFLAG_EX = 1.
<PIQEDTC_SYSTEM_DISP>-HONORSINDIC_EX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQEDTC_SYSTEM_DISP-EXTGRADESYM_EX, sy-vline,
  WA_PIQEDTC_SYSTEM_DISP-EXTGRADE_EX, sy-vline,
  WA_PIQEDTC_SYSTEM_DISP-EXTGRADESCALE_EX, sy-vline,
  WA_PIQEDTC_SYSTEM_DISP-GRADEMANFLAG_EX, sy-vline,
  WA_PIQEDTC_SYSTEM_DISP-INTGRADESYM_EX, sy-vline,
  WA_PIQEDTC_SYSTEM_DISP-INTGRADE_EX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQEDTC_SYSTEM_DISP 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_PIQEDTC_SYSTEM_DISP 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_PIQEDTC_SYSTEM_DISP INTO WA_PIQEDTC_SYSTEM_DISP.


*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 EXTCOCREDTYPE_EX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQEDTC_SYSTEM_DISP-EXTCOCREDTYPE_EX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQEDTC_SYSTEM_DISP-EXTCOCREDTYPE_EX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field CPUNIT_IN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQEDTC_SYSTEM_DISP-CPUNIT_IN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQEDTC_SYSTEM_DISP-CPUNIT_IN.
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_PIQEDTC_SYSTEM_DISP_STR, 
GRP_EX TYPE STRING,
OTYPE_EX TYPE STRING,
OBJID_EX TYPE STRING,
COREPEATFLAG_EX TYPE STRING,
HONORSINDIC_EX TYPE STRING,
EXTGRADESYM_EX TYPE STRING,
EXTGRADE_EX TYPE STRING,
EXTGRADESCALE_EX TYPE STRING,
GRADEMANFLAG_EX TYPE STRING,
INTGRADESYM_EX TYPE STRING,
INTGRADE_EX TYPE STRING,
INTGRADESCALE_EX TYPE STRING,
EXTCOATMCRED_EX TYPE STRING,
EXTCOGRDCRED_EX TYPE STRING,
EXTCOERNCRED_EX TYPE STRING,
EXTCOCREDTYPE_EX TYPE STRING,
COCREDMANFLAG_EX TYPE STRING,
INTCOATMCRED_EX TYPE STRING,
INTCOGRDCRED_EX TYPE STRING,
INTCOERNCRED_EX TYPE STRING,
INTCOCREDTYPE_EX TYPE STRING,
BASFORCOCRED_EX TYPE STRING,
COWITHDRDATE_EX TYPE STRING,
COSESID_EX TYPE STRING,
COSESYEAR_EX TYPE STRING,
COBEGDATE_EX TYPE STRING,
COENDDATE_EX TYPE STRING,
AWSTATUS_EX TYPE STRING,
EQCONFERDATE_EX TYPE STRING,
ATTNO_TW_IN_EX TYPE STRING,
AGRTYPE_EX TYPE STRING,
AGRSTAT_EX TYPE STRING,
AGRREMARK_EX TYPE STRING,
OBJTYPE_EX TYPE STRING,
REALO_EX TYPE STRING,
APPSERTEXT_EX TYPE STRING,
BOOKREASON_EX TYPE STRING,
SHORT_EX TYPE STRING,
STEXT_EX TYPE STRING,
OTYPET_EX TYPE STRING,
SCALEINT_EX TYPE STRING,
SCALEEXT_EX TYPE STRING,
OTYPE_ICON_EX TYPE STRING,
DETAIL_ICON_EX TYPE STRING,
GRP_IN TYPE STRING,
OTYPE_IN TYPE STRING,
OBJID_IN TYPE STRING,
GRADESYM_IN TYPE STRING,
GRADE_IN TYPE STRING,
GRADESCALE_IN TYPE STRING,
CPATTEMP_IN TYPE STRING,
CPEARNED_IN TYPE STRING,
CPGRADED_IN TYPE STRING,
CPUNIT_IN TYPE STRING,
PROGC_VAR_IN TYPE STRING,
SC_OBJID_IN TYPE STRING,
TRANSFERBOOKID_IN TYPE STRING,
AWSTATUS_IN TYPE STRING,
PERYR_IN TYPE STRING,
PERID_IN TYPE STRING,
AGRBEGDA_IN TYPE STRING,
AGRENDDA_IN TYPE STRING,
ATTNO_TW_IN TYPE STRING,
AGRTYPE_IN TYPE STRING,
AGRSTAT_IN TYPE STRING,
AGRREMARK_IN TYPE STRING,
OBJTYPE_IN TYPE STRING,
REALO_IN TYPE STRING,
APPSERTEXT_IN TYPE STRING,
BOOKREASON_IN TYPE STRING,
DEL_ICON_IN TYPE STRING,
OTYPE_ICON_IN TYPE STRING,
DETAIL_ICON_IN TYPE STRING,
SHORT_IN TYPE STRING,
STEXT_IN TYPE STRING,
OTYPET_IN TYPE STRING,
SCALET_IN TYPE STRING,
PROGC_VART_IN TYPE STRING,
GRADESYMT_IN TYPE STRING,
CUT_CONN_ICON TYPE STRING,
NOTE_ICON TYPE STRING,
INTAWSTATUS_ICON TYPE STRING,
EXTAWSTATUS_ICON TYPE STRING,
AGMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQEDTC_SYSTEM_DISP_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_PIQEDTC_SYSTEM_DISP_STR-GRP_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OBJID_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COREPEATFLAG_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-HONORSINDIC_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTGRADESYM_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTGRADE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTGRADESCALE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRADEMANFLAG_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTGRADESYM_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTGRADE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTGRADESCALE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTCOATMCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTCOGRDCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTCOERNCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTCOCREDTYPE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COCREDMANFLAG_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTCOATMCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTCOGRDCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTCOERNCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTCOCREDTYPE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-BASFORCOCRED_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COWITHDRDATE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COSESID_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COSESYEAR_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COBEGDATE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-COENDDATE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AWSTATUS_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EQCONFERDATE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-ATTNO_TW_IN_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRTYPE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRSTAT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRREMARK_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OBJTYPE_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-REALO_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-APPSERTEXT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-BOOKREASON_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SHORT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-STEXT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPET_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SCALEINT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SCALEEXT_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPE_ICON_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-DETAIL_ICON_EX sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRP_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPE_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OBJID_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRADESYM_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRADE_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRADESCALE_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-CPATTEMP_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-CPEARNED_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-CPGRADED_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-CPUNIT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-PROGC_VAR_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SC_OBJID_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-TRANSFERBOOKID_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AWSTATUS_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-PERYR_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-PERID_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRBEGDA_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRENDDA_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-ATTNO_TW_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRTYPE_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRSTAT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGRREMARK_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OBJTYPE_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-REALO_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-APPSERTEXT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-BOOKREASON_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-DEL_ICON_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPE_ICON_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-DETAIL_ICON_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SHORT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-STEXT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-OTYPET_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-SCALET_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-PROGC_VART_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-GRADESYMT_IN sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-CUT_CONN_ICON sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-NOTE_ICON sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-INTAWSTATUS_ICON sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-EXTAWSTATUS_ICON sy-vline 
WA_PIQEDTC_SYSTEM_DISP_STR-AGMID sy-vline      INTO ld_text SEPARATED BY SPACE.

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