ABAP Select data from SAP table THAS_HR_EXP_TRAN_DCSP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM THAS_HR_EXP_TRAN_DCSP
*  INTO TABLE @DATA(IT_THAS_HR_EXP_TRAN_DCSP2).
*--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_THAS_HR_EXP_TRAN_DCSP INDEX 1 INTO DATA(WA_THAS_HR_EXP_TRAN_DCSP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<THAS_HR_EXP_TRAN_DCSP>-PRICE_DATE = 1.
<THAS_HR_EXP_TRAN_DCSP>-CTY_FLOW_CAT = 1.
<THAS_HR_EXP_TRAN_DCSP>-DUE_DATE = 1.
<THAS_HR_EXP_TRAN_DCSP>-QUANTITY = 1.
<THAS_HR_EXP_TRAN_DCSP>-UNIT_OF_MEASURE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_THAS_HR_EXP_TRAN_DCSP-PAYMENT_DATE, sy-vline,
  WA_THAS_HR_EXP_TRAN_DCSP-DELIVERY_DATE, sy-vline,
  WA_THAS_HR_EXP_TRAN_DCSP-COMMODITY_ID, sy-vline,
  WA_THAS_HR_EXP_TRAN_DCSP-DCS, sy-vline,
  WA_THAS_HR_EXP_TRAN_DCSP-MIC, sy-vline,
  WA_THAS_HR_EXP_TRAN_DCSP-PRICETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_THAS_HR_EXP_TRAN_DCSP 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_THAS_HR_EXP_TRAN_DCSP 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_THAS_HR_EXP_TRAN_DCSP INTO WA_THAS_HR_EXP_TRAN_DCSP.


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

*Conversion exit CUNIT, internal->external for field PRICE_UNIT_OF_MEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_THAS_HR_EXP_TRAN_DCSP-PRICE_UNIT_OF_MEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_THAS_HR_EXP_TRAN_DCSP-PRICE_UNIT_OF_MEASURE.
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_THAS_HR_EXP_TRAN_DCSP_STR, 
PRICE_DATE TYPE STRING,
CTY_FLOW_CAT TYPE STRING,
DUE_DATE TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
PAYMENT_DATE TYPE STRING,
DELIVERY_DATE TYPE STRING,
COMMODITY_ID TYPE STRING,
DCS TYPE STRING,
MIC TYPE STRING,
PRICETYPE TYPE STRING,
PRICE_TIME TYPE STRING,
TENOR TYPE STRING,
KEYDATE TYPE STRING,
WEIGHTAGE TYPE STRING,
FIXED_PRICE TYPE STRING,
PRICE_CURRENCY TYPE STRING,
PRICE_UNIT_OF_QUOTATION TYPE STRING,
PRICE_UNIT_OF_MEASURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_THAS_HR_EXP_TRAN_DCSP_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_THAS_HR_EXP_TRAN_DCSP_STR-PRICE_DATE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-CTY_FLOW_CAT sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-DUE_DATE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-QUANTITY sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-UNIT_OF_MEASURE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PAYMENT_DATE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-DELIVERY_DATE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-COMMODITY_ID sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-DCS sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-MIC sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PRICETYPE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PRICE_TIME sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-TENOR sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-KEYDATE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-WEIGHTAGE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-FIXED_PRICE sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PRICE_CURRENCY sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PRICE_UNIT_OF_QUOTATION sy-vline 
WA_THAS_HR_EXP_TRAN_DCSP_STR-PRICE_UNIT_OF_MEASURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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