ABAP Select data from SAP table VTB_MARKET_T into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTB_MARKET_T
*  INTO TABLE @DATA(IT_VTB_MARKET_T2).
*--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_VTB_MARKET_T INDEX 1 INTO DATA(WA_VTB_MARKET_T2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTB_MARKET_T>-MANDT = 1.
<VTB_MARKET_T>-SCLASS = 1.
<VTB_MARKET_T>-RKEY1 = 1.
<VTB_MARKET_T>-RKEY2 = 1.
<VTB_MARKET_T>-SINSTRUMNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTB_MARKET_T-RFEEDNAME, sy-vline,
  WA_VTB_MARKET_T-RZUSATZ, sy-vline,
  WA_VTB_MARKET_T-SMETACLASS, sy-vline,
  WA_VTB_MARKET_T-SCLASS2, sy-vline,
  WA_VTB_MARKET_T-RKEY12, sy-vline,
  WA_VTB_MARKET_T-RKEY22, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTB_MARKET_T 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_VTB_MARKET_T 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_VTB_MARKET_T INTO WA_VTB_MARKET_T.


*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_VTB_MARKET_T_STR, 
MANDT TYPE STRING,
SCLASS TYPE STRING,
RKEY1 TYPE STRING,
RKEY2 TYPE STRING,
SINSTRUMNT TYPE STRING,
RFEEDNAME TYPE STRING,
RZUSATZ TYPE STRING,
SMETACLASS TYPE STRING,
SCLASS2 TYPE STRING,
RKEY12 TYPE STRING,
RKEY22 TYPE STRING,
SSTATS TYPE STRING,
SPOOLID TYPE STRING,
ERROR TYPE STRING,
RUPDHIST TYPE STRING,
RDONE TYPE STRING,
RSUPID TYPE STRING,
RCONID TYPE STRING,
RCONCN TYPE STRING,
DDATE TYPE STRING,
TTIME TYPE STRING,
VALUE TYPE STRING,
CURRENCY TYPE STRING,
FFACT TYPE STRING,
TFACT TYPE STRING,
MKIND TYPE STRING,
RINID1 TYPE STRING,
RINID2 TYPE STRING,
SPRPTY TYPE STRING,
UNAME TYPE STRING,
UKURSART1 TYPE STRING,
UKURSART2 TYPE STRING,
ZEITRAUM TYPE STRING,
KONFIDENZ TYPE STRING,
DECAY TYPE STRING,
REALTIME TYPE STRING,
LIMIT TYPE STRING,
SPOOLID2 TYPE STRING,
TIMEDEP TYPE STRING,
MQUOTE TYPE STRING,
CCY_UNIT TYPE STRING,
UOM TYPE STRING,
PUT_CALL_IND TYPE STRING,
STRIKE_AMOUNT TYPE STRING,
DCSID TYPE STRING,
MIC TYPE STRING,
KEYDATE TYPE STRING,
TENOR TYPE STRING,
PRICETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTB_MARKET_T_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_VTB_MARKET_T_STR-MANDT sy-vline 
WA_VTB_MARKET_T_STR-SCLASS sy-vline 
WA_VTB_MARKET_T_STR-RKEY1 sy-vline 
WA_VTB_MARKET_T_STR-RKEY2 sy-vline 
WA_VTB_MARKET_T_STR-SINSTRUMNT sy-vline 
WA_VTB_MARKET_T_STR-RFEEDNAME sy-vline 
WA_VTB_MARKET_T_STR-RZUSATZ sy-vline 
WA_VTB_MARKET_T_STR-SMETACLASS sy-vline 
WA_VTB_MARKET_T_STR-SCLASS2 sy-vline 
WA_VTB_MARKET_T_STR-RKEY12 sy-vline 
WA_VTB_MARKET_T_STR-RKEY22 sy-vline 
WA_VTB_MARKET_T_STR-SSTATS sy-vline 
WA_VTB_MARKET_T_STR-SPOOLID sy-vline 
WA_VTB_MARKET_T_STR-ERROR sy-vline 
WA_VTB_MARKET_T_STR-RUPDHIST sy-vline 
WA_VTB_MARKET_T_STR-RDONE sy-vline 
WA_VTB_MARKET_T_STR-RSUPID sy-vline 
WA_VTB_MARKET_T_STR-RCONID sy-vline 
WA_VTB_MARKET_T_STR-RCONCN sy-vline 
WA_VTB_MARKET_T_STR-DDATE sy-vline 
WA_VTB_MARKET_T_STR-TTIME sy-vline 
WA_VTB_MARKET_T_STR-VALUE sy-vline 
WA_VTB_MARKET_T_STR-CURRENCY sy-vline 
WA_VTB_MARKET_T_STR-FFACT sy-vline 
WA_VTB_MARKET_T_STR-TFACT sy-vline 
WA_VTB_MARKET_T_STR-MKIND sy-vline 
WA_VTB_MARKET_T_STR-RINID1 sy-vline 
WA_VTB_MARKET_T_STR-RINID2 sy-vline 
WA_VTB_MARKET_T_STR-SPRPTY sy-vline 
WA_VTB_MARKET_T_STR-UNAME sy-vline 
WA_VTB_MARKET_T_STR-UKURSART1 sy-vline 
WA_VTB_MARKET_T_STR-UKURSART2 sy-vline 
WA_VTB_MARKET_T_STR-ZEITRAUM sy-vline 
WA_VTB_MARKET_T_STR-KONFIDENZ sy-vline 
WA_VTB_MARKET_T_STR-DECAY sy-vline 
WA_VTB_MARKET_T_STR-REALTIME sy-vline 
WA_VTB_MARKET_T_STR-LIMIT sy-vline 
WA_VTB_MARKET_T_STR-SPOOLID2 sy-vline 
WA_VTB_MARKET_T_STR-TIMEDEP sy-vline 
WA_VTB_MARKET_T_STR-MQUOTE sy-vline 
WA_VTB_MARKET_T_STR-CCY_UNIT sy-vline 
WA_VTB_MARKET_T_STR-UOM sy-vline 
WA_VTB_MARKET_T_STR-PUT_CALL_IND sy-vline 
WA_VTB_MARKET_T_STR-STRIKE_AMOUNT sy-vline 
WA_VTB_MARKET_T_STR-DCSID sy-vline 
WA_VTB_MARKET_T_STR-MIC sy-vline 
WA_VTB_MARKET_T_STR-KEYDATE sy-vline 
WA_VTB_MARKET_T_STR-TENOR sy-vline 
WA_VTB_MARKET_T_STR-PRICETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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