ABAP Select data from SAP table TRQV_LOT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRQV_LOT
*  INTO TABLE @DATA(IT_TRQV_LOT2).
*--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_TRQV_LOT INDEX 1 INTO DATA(WA_TRQV_LOT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRQV_LOT>-MANDT = 1.
<TRQV_LOT>-POSITION_OID = 1.
<TRQV_LOT>-COM_VAL_CLASS = 1.
<TRQV_LOT>-COMPANY_CODE = 1.
<TRQV_LOT>-SECURITY_ACCOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRQV_LOT-POSITION_ACCOUNT, sy-vline,
  WA_TRQV_LOT-SECURITY_ID, sy-vline,
  WA_TRQV_LOT-PORTFOLIO, sy-vline,
  WA_TRQV_LOT-TRADER, sy-vline,
  WA_TRQV_LOT-POSITION_CAT, sy-vline,
  WA_TRQV_LOT-CONSUMPTION_CAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRQV_LOT 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_TRQV_LOT 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_TRQV_LOT INTO WA_TRQV_LOT.


*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 SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRQV_LOT-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRQV_LOT-SECURITY_ID.
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_TRQV_LOT_STR, 
MANDT TYPE STRING,
POSITION_OID TYPE STRING,
COM_VAL_CLASS TYPE STRING,
COMPANY_CODE TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
POSITION_ACCOUNT TYPE STRING,
SECURITY_ID TYPE STRING,
PORTFOLIO TYPE STRING,
TRADER TYPE STRING,
POSITION_CAT TYPE STRING,
CONSUMPTION_CAT TYPE STRING,
QUANTITY_CAT TYPE STRING,
NOMINAL_CURR TYPE STRING,
SELECTOR_OID TYPE STRING,
SELECTOR_CLS TYPE STRING,
LOT_GUID TYPE STRING,
POSITION_DATE TYPE STRING,
ORIGIN_DATE TYPE STRING,
BUSTRANSID TYPE STRING,
LOT_ID TYPE STRING,
FLAG_INACTIVE TYPE STRING,
DATE_ZERO_QUANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRQV_LOT_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_TRQV_LOT_STR-MANDT sy-vline 
WA_TRQV_LOT_STR-POSITION_OID sy-vline 
WA_TRQV_LOT_STR-COM_VAL_CLASS sy-vline 
WA_TRQV_LOT_STR-COMPANY_CODE sy-vline 
WA_TRQV_LOT_STR-SECURITY_ACCOUNT sy-vline 
WA_TRQV_LOT_STR-POSITION_ACCOUNT sy-vline 
WA_TRQV_LOT_STR-SECURITY_ID sy-vline 
WA_TRQV_LOT_STR-PORTFOLIO sy-vline 
WA_TRQV_LOT_STR-TRADER sy-vline 
WA_TRQV_LOT_STR-POSITION_CAT sy-vline 
WA_TRQV_LOT_STR-CONSUMPTION_CAT sy-vline 
WA_TRQV_LOT_STR-QUANTITY_CAT sy-vline 
WA_TRQV_LOT_STR-NOMINAL_CURR sy-vline 
WA_TRQV_LOT_STR-SELECTOR_OID sy-vline 
WA_TRQV_LOT_STR-SELECTOR_CLS sy-vline 
WA_TRQV_LOT_STR-LOT_GUID sy-vline 
WA_TRQV_LOT_STR-POSITION_DATE sy-vline 
WA_TRQV_LOT_STR-ORIGIN_DATE sy-vline 
WA_TRQV_LOT_STR-BUSTRANSID sy-vline 
WA_TRQV_LOT_STR-LOT_ID sy-vline 
WA_TRQV_LOT_STR-FLAG_INACTIVE sy-vline 
WA_TRQV_LOT_STR-DATE_ZERO_QUANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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