ABAP Select data from SAP table COMT_PRLGTEXT_MAINT_UI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMT_PRLGTEXT_MAINT_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 COMT_PRLGTEXT_MAINT_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 COMT_PRLGTEXT_MAINT_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_COMT_PRLGTEXT_MAINT_UI TYPE STANDARD TABLE OF COMT_PRLGTEXT_MAINT_UI,
      WA_COMT_PRLGTEXT_MAINT_UI TYPE COMT_PRLGTEXT_MAINT_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: <COMT_PRLGTEXT_MAINT_UI> TYPE COMT_PRLGTEXT_MAINT_UI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMT_PRLGTEXT_MAINT_UI
*  INTO TABLE @DATA(IT_COMT_PRLGTEXT_MAINT_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_COMT_PRLGTEXT_MAINT_UI INDEX 1 INTO DATA(WA_COMT_PRLGTEXT_MAINT_UI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMT_PRLGTEXT_MAINT_UI>-DATA_UI = 1.
<COMT_PRLGTEXT_MAINT_UI>-MANDT = 1.
<COMT_PRLGTEXT_MAINT_UI>-TDOBJECT = 1.
<COMT_PRLGTEXT_MAINT_UI>-TDNAME = 1.
<COMT_PRLGTEXT_MAINT_UI>-TDID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMT_PRLGTEXT_MAINT_UI-TDSPRAS, sy-vline,
  WA_COMT_PRLGTEXT_MAINT_UI-TDTITLE, sy-vline,
  WA_COMT_PRLGTEXT_MAINT_UI-TDFRELES, sy-vline,
  WA_COMT_PRLGTEXT_MAINT_UI-TDFUSER, sy-vline,
  WA_COMT_PRLGTEXT_MAINT_UI-TDFDATE, sy-vline,
  WA_COMT_PRLGTEXT_MAINT_UI-TDFTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMT_PRLGTEXT_MAINT_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_COMT_PRLGTEXT_MAINT_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_COMT_PRLGTEXT_MAINT_UI INTO WA_COMT_PRLGTEXT_MAINT_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 ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_PRLGTEXT_MAINT_UI-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_PRLGTEXT_MAINT_UI-TDSPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TDOSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_PRLGTEXT_MAINT_UI-TDOSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_PRLGTEXT_MAINT_UI-TDOSPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COMT_PRLGTEXT_MAINT_UI-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMT_PRLGTEXT_MAINT_UI-LOGSYS.
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_COMT_PRLGTEXT_MAINT_UI_STR, 
DATA_UI TYPE STRING,
MANDT TYPE STRING,
TDOBJECT TYPE STRING,
TDNAME TYPE STRING,
TDID TYPE STRING,
TDSPRAS TYPE STRING,
TDTITLE TYPE STRING,
TDFRELES TYPE STRING,
TDFUSER TYPE STRING,
TDFDATE TYPE STRING,
TDFTIME TYPE STRING,
TDLRELES TYPE STRING,
TDLUSER TYPE STRING,
TDLDATE TYPE STRING,
TDLTIME TYPE STRING,
TDVERSION TYPE STRING,
TDSTYLE TYPE STRING,
TDFORM TYPE STRING,
TDHYPHENAT TYPE STRING,
TDTRANSTAT TYPE STRING,
TDOSPRAS TYPE STRING,
TDMACODE1 TYPE STRING,
TDMACODE2 TYPE STRING,
TDTXTLINES TYPE STRING,
TDREF TYPE STRING,
TDREFOBJ TYPE STRING,
TDREFNAME TYPE STRING,
TDREFID TYPE STRING,
TDTEXTTYPE TYPE STRING,
TDCOMPRESS TYPE STRING,
TDOCLASS TYPE STRING,
LOGSYS TYPE STRING,
PRODUCT_GUID TYPE STRING,
PR_ORG_ID TYPE STRING,
ORG_ID_DESCR TYPE STRING,
TEXTOBJECT_TXT TYPE STRING,
TEXTID_TXT TYPE STRING,
TEXTLANGU_TXT TYPE STRING,
LOGSYS_TEXT TYPE STRING,
LINES TYPE STRING,
UPDATE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMT_PRLGTEXT_MAINT_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_COMT_PRLGTEXT_MAINT_UI_STR-DATA_UI sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-MANDT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDOBJECT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDNAME sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDID sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDSPRAS sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDTITLE sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDFRELES sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDFUSER sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDFDATE sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDFTIME sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDLRELES sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDLUSER sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDLDATE sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDLTIME sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDVERSION sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDSTYLE sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDFORM sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDHYPHENAT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDTRANSTAT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDOSPRAS sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDMACODE1 sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDMACODE2 sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDTXTLINES sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDREF sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDREFOBJ sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDREFNAME sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDREFID sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDTEXTTYPE sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDCOMPRESS sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TDOCLASS sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-LOGSYS sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-PRODUCT_GUID sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-PR_ORG_ID sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-ORG_ID_DESCR sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TEXTOBJECT_TXT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TEXTID_TXT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-TEXTLANGU_TXT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-LOGSYS_TEXT sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-LINES sy-vline 
WA_COMT_PRLGTEXT_MAINT_UI_STR-UPDATE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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