ABAP Select data from SAP table THM_HM_SCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM THM_HM_SCREEN
*  INTO TABLE @DATA(IT_THM_HM_SCREEN2).
*--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_THM_HM_SCREEN INDEX 1 INTO DATA(WA_THM_HM_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<THM_HM_SCREEN>-BUKRS = 1.
<THM_HM_SCREEN>-PLANNERID = 1.
<THM_HM_SCREEN>-TEXT = 1.
<THM_HM_SCREEN>-RISKCAT = 1.
<THM_HM_SCREEN>-STARTTERM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_THM_HM_SCREEN-ENDTERM, sy-vline,
  WA_THM_HM_SCREEN-CRUSER, sy-vline,
  WA_THM_HM_SCREEN-CDATE, sy-vline,
  WA_THM_HM_SCREEN-UPUSER, sy-vline,
  WA_THM_HM_SCREEN-UDATE, sy-vline,
  WA_THM_HM_SCREEN-TIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_THM_HM_SCREEN 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_THM_HM_SCREEN 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_THM_HM_SCREEN INTO WA_THM_HM_SCREEN.


*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 ALPHA, internal->external for field PLANNERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_THM_HM_SCREEN-PLANNERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THM_HM_SCREEN-PLANNERID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TRANSACTIONID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_THM_HM_SCREEN-TRANSACTIONID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THM_HM_SCREEN-TRANSACTIONID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RIDXRT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_THM_HM_SCREEN-RIDXRT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THM_HM_SCREEN-RIDXRT.
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_THM_HM_SCREEN_STR, 
BUKRS TYPE STRING,
PLANNERID TYPE STRING,
TEXT TYPE STRING,
RISKCAT TYPE STRING,
STARTTERM TYPE STRING,
ENDTERM TYPE STRING,
CRUSER TYPE STRING,
CDATE TYPE STRING,
UPUSER TYPE STRING,
UDATE TYPE STRING,
TIME TYPE STRING,
LASTEXPOSUREID TYPE STRING,
RO_FLAG TYPE STRING,
TRANSACTIONID TYPE STRING,
TEXT50 TYPE STRING,
EXPOSUREID TYPE STRING,
TRANSCAT TYPE STRING,
TRANSACTIVITY TYPE STRING,
CREATEDATE TYPE STRING,
TRANSDATE TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
VALID_FROM TYPE STRING,
HEDGE_ID TYPE STRING,
INTRATE_REF TYPE STRING,
INTRATE_ADJ TYPE STRING,
INTCALC_START TYPE STRING,
INTCALC_END TYPE STRING,
INTCALC_METHOD TYPE STRING,
INTCALC_TIMEBAS TYPE STRING,
INTCALC_DAYS TYPE STRING,
INTCALC_KALID TYPE STRING,
INTCALC_AMNT TYPE STRING,
INTRATE_FIX TYPE STRING,
INTRATE_SIGN TYPE STRING,
INTRATE_SOFFSET TYPE STRING,
NOMINAL TYPE STRING,
N_AMOUNT TYPE STRING,
RIDXRT TYPE STRING,
RIDEXT TYPE STRING,
RO_TRANSACTIVITY TYPE STRING,
RO_STERM TYPE STRING,
RO_ETERM TYPE STRING,
RO_DDATE TYPE STRING,
RO_CFLOW TYPE STRING,
RO_AMT TYPE STRING,
RO_CURR TYPE STRING,
RO_TEXT TYPE STRING,
RO_SZBMETH TYPE STRING,
RO_DBERVON TYPE STRING,
RO_DBERBIS TYPE STRING,
RO_SSIGN TYPE STRING,
RO_ABASTAGE TYPE STRING,
RO_ATAGE TYPE STRING,
RO_PKOND TYPE STRING,
RO_SZSREF TYPE STRING,
RO_SZSREFVZ TYPE STRING,
RO_SOFFSET TYPE STRING,
RO_DZFEST TYPE STRING,
RO_SNOMWHR TYPE STRING,
RO_BNOMINAL TYPE STRING,
RO_BNWHR TYPE STRING,
RO_SNWHR TYPE STRING,
STATUS TYPE STRING,
S_FLAG TYPE STRING,
S_POSITION TYPE STRING,
DROP_L TYPE STRING,
CELLTAB TYPE STRING,
D_LIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_THM_HM_SCREEN_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_THM_HM_SCREEN_STR-BUKRS sy-vline 
WA_THM_HM_SCREEN_STR-PLANNERID sy-vline 
WA_THM_HM_SCREEN_STR-TEXT sy-vline 
WA_THM_HM_SCREEN_STR-RISKCAT sy-vline 
WA_THM_HM_SCREEN_STR-STARTTERM sy-vline 
WA_THM_HM_SCREEN_STR-ENDTERM sy-vline 
WA_THM_HM_SCREEN_STR-CRUSER sy-vline 
WA_THM_HM_SCREEN_STR-CDATE sy-vline 
WA_THM_HM_SCREEN_STR-UPUSER sy-vline 
WA_THM_HM_SCREEN_STR-UDATE sy-vline 
WA_THM_HM_SCREEN_STR-TIME sy-vline 
WA_THM_HM_SCREEN_STR-LASTEXPOSUREID sy-vline 
WA_THM_HM_SCREEN_STR-RO_FLAG sy-vline 
WA_THM_HM_SCREEN_STR-TRANSACTIONID sy-vline 
WA_THM_HM_SCREEN_STR-TEXT50 sy-vline 
WA_THM_HM_SCREEN_STR-EXPOSUREID sy-vline 
WA_THM_HM_SCREEN_STR-TRANSCAT sy-vline 
WA_THM_HM_SCREEN_STR-TRANSACTIVITY sy-vline 
WA_THM_HM_SCREEN_STR-CREATEDATE sy-vline 
WA_THM_HM_SCREEN_STR-TRANSDATE sy-vline 
WA_THM_HM_SCREEN_STR-AMOUNT sy-vline 
WA_THM_HM_SCREEN_STR-CURRENCY sy-vline 
WA_THM_HM_SCREEN_STR-VALID_FROM sy-vline 
WA_THM_HM_SCREEN_STR-HEDGE_ID sy-vline 
WA_THM_HM_SCREEN_STR-INTRATE_REF sy-vline 
WA_THM_HM_SCREEN_STR-INTRATE_ADJ sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_START sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_END sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_METHOD sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_TIMEBAS sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_DAYS sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_KALID sy-vline 
WA_THM_HM_SCREEN_STR-INTCALC_AMNT sy-vline 
WA_THM_HM_SCREEN_STR-INTRATE_FIX sy-vline 
WA_THM_HM_SCREEN_STR-INTRATE_SIGN sy-vline 
WA_THM_HM_SCREEN_STR-INTRATE_SOFFSET sy-vline 
WA_THM_HM_SCREEN_STR-NOMINAL sy-vline 
WA_THM_HM_SCREEN_STR-N_AMOUNT sy-vline 
WA_THM_HM_SCREEN_STR-RIDXRT sy-vline 
WA_THM_HM_SCREEN_STR-RIDEXT sy-vline 
WA_THM_HM_SCREEN_STR-RO_TRANSACTIVITY sy-vline 
WA_THM_HM_SCREEN_STR-RO_STERM sy-vline 
WA_THM_HM_SCREEN_STR-RO_ETERM sy-vline 
WA_THM_HM_SCREEN_STR-RO_DDATE sy-vline 
WA_THM_HM_SCREEN_STR-RO_CFLOW sy-vline 
WA_THM_HM_SCREEN_STR-RO_AMT sy-vline 
WA_THM_HM_SCREEN_STR-RO_CURR sy-vline 
WA_THM_HM_SCREEN_STR-RO_TEXT sy-vline 
WA_THM_HM_SCREEN_STR-RO_SZBMETH sy-vline 
WA_THM_HM_SCREEN_STR-RO_DBERVON sy-vline 
WA_THM_HM_SCREEN_STR-RO_DBERBIS sy-vline 
WA_THM_HM_SCREEN_STR-RO_SSIGN sy-vline 
WA_THM_HM_SCREEN_STR-RO_ABASTAGE sy-vline 
WA_THM_HM_SCREEN_STR-RO_ATAGE sy-vline 
WA_THM_HM_SCREEN_STR-RO_PKOND sy-vline 
WA_THM_HM_SCREEN_STR-RO_SZSREF sy-vline 
WA_THM_HM_SCREEN_STR-RO_SZSREFVZ sy-vline 
WA_THM_HM_SCREEN_STR-RO_SOFFSET sy-vline 
WA_THM_HM_SCREEN_STR-RO_DZFEST sy-vline 
WA_THM_HM_SCREEN_STR-RO_SNOMWHR sy-vline 
WA_THM_HM_SCREEN_STR-RO_BNOMINAL sy-vline 
WA_THM_HM_SCREEN_STR-RO_BNWHR sy-vline 
WA_THM_HM_SCREEN_STR-RO_SNWHR sy-vline 
WA_THM_HM_SCREEN_STR-STATUS sy-vline 
WA_THM_HM_SCREEN_STR-S_FLAG sy-vline 
WA_THM_HM_SCREEN_STR-S_POSITION sy-vline 
WA_THM_HM_SCREEN_STR-DROP_L sy-vline 
WA_THM_HM_SCREEN_STR-CELLTAB sy-vline 
WA_THM_HM_SCREEN_STR-D_LIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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