ABAP Select data from SAP table /TDAG/CPS_DECSUB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /TDAG/CPS_DECSUB 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 /TDAG/CPS_DECSUB. 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 /TDAG/CPS_DECSUB 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_/TDAG/CPS_DECSUB TYPE STANDARD TABLE OF /TDAG/CPS_DECSUB,
      WA_/TDAG/CPS_DECSUB TYPE /TDAG/CPS_DECSUB,
      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: </TDAG/CPS_DECSUB> TYPE /TDAG/CPS_DECSUB.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /TDAG/CPS_DECSUB
  INTO TABLE IT_/TDAG/CPS_DECSUB.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/CPS_DECSUB
*  INTO TABLE @DATA(IT_/TDAG/CPS_DECSUB2).
*--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_/TDAG/CPS_DECSUB INDEX 1 INTO DATA(WA_/TDAG/CPS_DECSUB2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/TDAG/CPS_DECSUB ASSIGNING </TDAG/CPS_DECSUB>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/CPS_DECSUB>-MANDT = 1.
</TDAG/CPS_DECSUB>-RECN = 1.
</TDAG/CPS_DECSUB>-ACTN = 1.
</TDAG/CPS_DECSUB>-VALFR = 1.
</TDAG/CPS_DECSUB>-VALTO = 1.

ENDLOOP.

LOOP AT IT_/TDAG/CPS_DECSUB INTO WA_/TDAG/CPS_DECSUB.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/CPS_DECSUB-AENNR, sy-vline,
  WA_/TDAG/CPS_DECSUB-DELFLG, sy-vline,
  WA_/TDAG/CPS_DECSUB-PARKFLG, sy-vline,
  WA_/TDAG/CPS_DECSUB-CRDAT, sy-vline,
  WA_/TDAG/CPS_DECSUB-CRNAM, sy-vline,
  WA_/TDAG/CPS_DECSUB-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/CPS_DECSUB 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_/TDAG/CPS_DECSUB 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_/TDAG/CPS_DECSUB INTO WA_/TDAG/CPS_DECSUB.


*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 RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field VUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-VUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-VUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-WUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-WUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field PART_VUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-PART_VUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-PART_VUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PART_WUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-PART_WUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-PART_WUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field SPEC_ID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-SPEC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-SPEC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field HOMOGMAT_SPEC_ID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-HOMOGMAT_SPEC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-HOMOGMAT_SPEC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field THRE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPS_DECSUB-THRE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPS_DECSUB-THRE_UNIT.
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_/TDAG/CPS_DECSUB_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
REGLIST TYPE STRING,
SUBST_RECN TYPE STRING,
HOMOGMAT_RECN TYPE STRING,
HOMOGMAT_NAME TYPE STRING,
VALUE TYPE STRING,
VALUEMIN TYPE STRING,
VALUEMAX TYPE STRING,
VUNIT TYPE STRING,
WEIGHT TYPE STRING,
WUNIT TYPE STRING,
CONTAINED TYPE STRING,
REMARK TYPE STRING,
ORIGIN TYPE STRING,
EXEMPTION TYPE STRING,
CLASS TYPE STRING,
PART_RECN TYPE STRING,
PART_NAME TYPE STRING,
VALUE_IN_PART TYPE STRING,
VALUEMIN_IN_PART TYPE STRING,
VALUEMAX_IN_PART TYPE STRING,
PART_VUNIT TYPE STRING,
PART_WEIGHT TYPE STRING,
PART_WUNIT TYPE STRING,
FLG_AGAINST_PART TYPE STRING,
FLG_GROUP TYPE STRING,
GROUP_ID TYPE STRING,
FLG_GROUP_ALT TYPE STRING,
MODE TYPE STRING,
LOCKMOD TYPE STRING,
SPEC_ID TYPE STRING,
HOMOGMAT_SPEC_ID TYPE STRING,
PROH TYPE STRING,
DECL TYPE STRING,
THRE_NUM TYPE STRING,
THRE_TXT TYPE STRING,
THRE_UNIT TYPE STRING,
EXCEED TYPE STRING,
FLG_NORM TYPE STRING,
NORM_VALUEMIN TYPE STRING,
NORM_VALUE TYPE STRING,
NORM_VALUEMAX TYPE STRING,
NORM_WEIGHT TYPE STRING,
NORM_VALUEMIN_IN_PART TYPE STRING,
NORM_VALUE_IN_PART TYPE STRING,
NORM_VALUEMAX_IN_PART TYPE STRING,
NORM_PART_WEIGHT TYPE STRING,
MATCAT TYPE STRING,
FLG_REL_CHANGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/CPS_DECSUB_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_/TDAG/CPS_DECSUB_STR-MANDT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-RECN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-ACTN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALFR sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALTO sy-vline 
WA_/TDAG/CPS_DECSUB_STR-AENNR sy-vline 
WA_/TDAG/CPS_DECSUB_STR-DELFLG sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PARKFLG sy-vline 
WA_/TDAG/CPS_DECSUB_STR-CRDAT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-CRNAM sy-vline 
WA_/TDAG/CPS_DECSUB_STR-UPDDAT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-UPDNAM sy-vline 
WA_/TDAG/CPS_DECSUB_STR-SRSID sy-vline 
WA_/TDAG/CPS_DECSUB_STR-OWNID sy-vline 
WA_/TDAG/CPS_DECSUB_STR-RECNROOT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-REGLIST sy-vline 
WA_/TDAG/CPS_DECSUB_STR-SUBST_RECN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-HOMOGMAT_RECN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-HOMOGMAT_NAME sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUE sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUEMIN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUEMAX sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VUNIT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-WEIGHT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-WUNIT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-CONTAINED sy-vline 
WA_/TDAG/CPS_DECSUB_STR-REMARK sy-vline 
WA_/TDAG/CPS_DECSUB_STR-ORIGIN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-EXEMPTION sy-vline 
WA_/TDAG/CPS_DECSUB_STR-CLASS sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PART_RECN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PART_NAME sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUE_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUEMIN_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-VALUEMAX_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PART_VUNIT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PART_WEIGHT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PART_WUNIT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-FLG_AGAINST_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-FLG_GROUP sy-vline 
WA_/TDAG/CPS_DECSUB_STR-GROUP_ID sy-vline 
WA_/TDAG/CPS_DECSUB_STR-FLG_GROUP_ALT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-MODE sy-vline 
WA_/TDAG/CPS_DECSUB_STR-LOCKMOD sy-vline 
WA_/TDAG/CPS_DECSUB_STR-SPEC_ID sy-vline 
WA_/TDAG/CPS_DECSUB_STR-HOMOGMAT_SPEC_ID sy-vline 
WA_/TDAG/CPS_DECSUB_STR-PROH sy-vline 
WA_/TDAG/CPS_DECSUB_STR-DECL sy-vline 
WA_/TDAG/CPS_DECSUB_STR-THRE_NUM sy-vline 
WA_/TDAG/CPS_DECSUB_STR-THRE_TXT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-THRE_UNIT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-EXCEED sy-vline 
WA_/TDAG/CPS_DECSUB_STR-FLG_NORM sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUEMIN sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUE sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUEMAX sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_WEIGHT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUEMIN_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUE_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_VALUEMAX_IN_PART sy-vline 
WA_/TDAG/CPS_DECSUB_STR-NORM_PART_WEIGHT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-MATCAT sy-vline 
WA_/TDAG/CPS_DECSUB_STR-FLG_REL_CHANGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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