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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/RCSS_EXP_ALL_STUDY
*  INTO TABLE @DATA(IT_/TDAG/RCSS_EXP_ALL_STUDY2).
*--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/RCSS_EXP_ALL_STUDY INDEX 1 INTO DATA(WA_/TDAG/RCSS_EXP_ALL_STUDY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/RCSS_EXP_ALL_STUDY>-RECN = 1.
</TDAG/RCSS_EXP_ALL_STUDY>-SUBID = 1.
</TDAG/RCSS_EXP_ALL_STUDY>-SUBNAME = 1.
</TDAG/RCSS_EXP_ALL_STUDY>-CASNR = 1.
</TDAG/RCSS_EXP_ALL_STUDY>-ECNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/RCSS_EXP_ALL_STUDY-RSAG, sy-vline,
  WA_/TDAG/RCSS_EXP_ALL_STUDY-EPCODE, sy-vline,
  WA_/TDAG/RCSS_EXP_ALL_STUDY-EPNAME, sy-vline,
  WA_/TDAG/RCSS_EXP_ALL_STUDY-CHAPTER, sy-vline,
  WA_/TDAG/RCSS_EXP_ALL_STUDY-NAME, sy-vline,
  WA_/TDAG/RCSS_EXP_ALL_STUDY-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/RCSS_EXP_ALL_STUDY 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/RCSS_EXP_ALL_STUDY 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/RCSS_EXP_ALL_STUDY INTO WA_/TDAG/RCSS_EXP_ALL_STUDY.


*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/RCSS_EXP_ALL_STUDY-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_EXP_ALL_STUDY-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field LEOA_ISSUED_BY_CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/RCSS_EXP_ALL_STUDY-LEOA_ISSUED_BY_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/RCSS_EXP_ALL_STUDY-LEOA_ISSUED_BY_CODE.
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/RCSS_EXP_ALL_STUDY_STR, 
RECN TYPE STRING,
SUBID TYPE STRING,
SUBNAME TYPE STRING,
CASNR TYPE STRING,
ECNR TYPE STRING,
RSAG TYPE STRING,
EPCODE TYPE STRING,
EPNAME TYPE STRING,
CHAPTER TYPE STRING,
NAME TYPE STRING,
STATUS TYPE STRING,
KEY_STUDY TYPE STRING,
COV_REL TYPE STRING,
DOCLINK TYPE STRING,
STDID TYPE STRING,
METHOD_TEXT TYPE STRING,
METHOD_CODE TYPE STRING,
DATE_AVAIL TYPE STRING,
RELIABILITY TYPE STRING,
GLP TYPE STRING,
DATACONF TYPE STRING,
DOCOWNER_CODE TYPE STRING,
DOCOWNER_NAME TYPE STRING,
RECOWNER_CODE TYPE STRING,
RECOWNER_NAME TYPE STRING,
FLG_RELEASED TYPE STRING,
COST TYPE STRING,
COST_CURRENCY TYPE STRING,
PRICE TYPE STRING,
PRICE_CURRENCY TYPE STRING,
IUCLID_LINK TYPE STRING,
RESLT TYPE STRING,
LEOA_LGENT_CODE TYPE STRING,
LEOA_LGENT_NAME TYPE STRING,
LEOA TYPE STRING,
LEOA_DOCLINK TYPE STRING,
LEOA_STUDYDOCLINK TYPE STRING,
LEOA_ISSUED_BY_CODE TYPE STRING,
LEOA_ISSUED_BY_NAME TYPE STRING,
LEOA_ISSUE_DATE TYPE STRING,
LEOA_FLG_SOLD TYPE STRING,
LEOA_FLG_BOUGHT TYPE STRING,
LEOA_PRICE TYPE STRING,
LEOA_PRICE_CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/RCSS_EXP_ALL_STUDY_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/RCSS_EXP_ALL_STUDY_STR-RECN sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-SUBID sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-SUBNAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-CASNR sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-ECNR sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-RSAG sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-EPCODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-EPNAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-CHAPTER sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-NAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-STATUS sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-KEY_STUDY sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-COV_REL sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-DOCLINK sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-STDID sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-METHOD_TEXT sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-METHOD_CODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-DATE_AVAIL sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-RELIABILITY sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-GLP sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-DATACONF sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-DOCOWNER_CODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-DOCOWNER_NAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-RECOWNER_CODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-RECOWNER_NAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-FLG_RELEASED sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-COST sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-COST_CURRENCY sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-PRICE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-PRICE_CURRENCY sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-IUCLID_LINK sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-RESLT sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_LGENT_CODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_LGENT_NAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_DOCLINK sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_STUDYDOCLINK sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_ISSUED_BY_CODE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_ISSUED_BY_NAME sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_ISSUE_DATE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_FLG_SOLD sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_FLG_BOUGHT sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_PRICE sy-vline 
WA_/TDAG/RCSS_EXP_ALL_STUDY_STR-LEOA_PRICE_CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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