ABAP Select data from SAP table CPCTXAITSTDYTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPCTXAITSTDYTP
*  INTO TABLE @DATA(IT_CPCTXAITSTDYTP2).
*--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_CPCTXAITSTDYTP INDEX 1 INTO DATA(WA_CPCTXAITSTDYTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPCTXAITSTDYTP>-MANDT = 1.
<CPCTXAITSTDYTP>-PCTXACUTEINHALATIONPRPTYUUID = 1.
<CPCTXAITSTDYTP>-PCTXPRPTYUUID = 1.
<CPCTXAITSTDYTP>-PCTXACUTEINHLTNSPECIESPHRSUUID = 1.
<CPCTXAITSTDYTP>-PCTXACUTEINHLTNSPECIESPHRSTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPCTXAITSTDYTP-PCTXSEXPHRSUUID, sy-vline,
  WA_CPCTXAITSTDYTP-PCTXSEXPHRSTXT, sy-vline,
  WA_CPCTXAITSTDYTP-PCTXACUTEINHLTNTYPEPHRSUUID, sy-vline,
  WA_CPCTXAITSTDYTP-PCTXACUTEINHLTNTYPEPHRSTXT, sy-vline,
  WA_CPCTXAITSTDYTP-PCTXVALUELOWRQTY, sy-vline,
  WA_CPCTXAITSTDYTP-PCTXVALUELOWRQTYTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPCTXAITSTDYTP 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_CPCTXAITSTDYTP 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_CPCTXAITSTDYTP INTO WA_CPCTXAITSTDYTP.


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

*Conversion exit CUNIT, internal->external for field PCTXEXPSRDURNUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPCTXAITSTDYTP-PCTXEXPSRDURNUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPCTXAITSTDYTP-PCTXEXPSRDURNUOM.
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_CPCTXAITSTDYTP_STR, 
MANDT TYPE STRING,
PCTXACUTEINHALATIONPRPTYUUID TYPE STRING,
PCTXPRPTYUUID TYPE STRING,
PCTXACUTEINHLTNSPECIESPHRSUUID TYPE STRING,
PCTXACUTEINHLTNSPECIESPHRSTXT TYPE STRING,
PCTXSEXPHRSUUID TYPE STRING,
PCTXSEXPHRSTXT TYPE STRING,
PCTXACUTEINHLTNTYPEPHRSUUID TYPE STRING,
PCTXACUTEINHLTNTYPEPHRSTXT TYPE STRING,
PCTXVALUELOWRQTY TYPE STRING,
PCTXVALUELOWRQTYTXT TYPE STRING,
PCTXVALUELOWRQTYOPTR TYPE STRING,
PCTXVALUEUPRQTY TYPE STRING,
PCTXVALUEUPRQTYTXT TYPE STRING,
PCTXVALUEUPRQTYOPTR TYPE STRING,
PCTXVALUEUOM TYPE STRING,
PCTXVALUEUOMTXT TYPE STRING,
PCTXEXPSRDURN TYPE STRING,
PCTXEXPSRDURNASTXT TYPE STRING,
PCTXEXPSRDURNUOM TYPE STRING,
PCTXEXPSRDURNUOMTXT TYPE STRING,
PCTXACUTEINHLTNTESTATMSPHUUID TYPE STRING,
PCTXACUTEINHLTNTESTATMSPHTXT TYPE STRING,
PCTXACUTEINHLTNMETHODPHRSUUID TYPE STRING,
PCTXACUTEINHLTNMETHODPHRSTXT TYPE STRING,
PCTXACUTEINHLTNADDLSTMNTUUID TYPE STRING,
PCTXACUTEINHLTNADDLSTMNTTXT TYPE STRING,
PCPRPTYRATING TYPE STRING,
PCTXNOTETEXT TYPE STRING,
CREATIONUTCDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEUTCDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPCTXAITSTDYTP_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_CPCTXAITSTDYTP_STR-MANDT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHALATIONPRPTYUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXPRPTYUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNSPECIESPHRSUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNSPECIESPHRSTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXSEXPHRSUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXSEXPHRSTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNTYPEPHRSUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNTYPEPHRSTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUELOWRQTY sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUELOWRQTYTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUELOWRQTYOPTR sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUEUPRQTY sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUEUPRQTYTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUEUPRQTYOPTR sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUEUOM sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXVALUEUOMTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXEXPSRDURN sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXEXPSRDURNASTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXEXPSRDURNUOM sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXEXPSRDURNUOMTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNTESTATMSPHUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNTESTATMSPHTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNMETHODPHRSUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNMETHODPHRSTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNADDLSTMNTUUID sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXACUTEINHLTNADDLSTMNTTXT sy-vline 
WA_CPCTXAITSTDYTP_STR-PCPRPTYRATING sy-vline 
WA_CPCTXAITSTDYTP_STR-PCTXNOTETEXT sy-vline 
WA_CPCTXAITSTDYTP_STR-CREATIONUTCDATETIME sy-vline 
WA_CPCTXAITSTDYTP_STR-CREATEDBYUSER sy-vline 
WA_CPCTXAITSTDYTP_STR-LASTCHANGEUTCDATETIME sy-vline 
WA_CPCTXAITSTDYTP_STR-LASTCHANGEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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