ABAP Select data from SAP table BAPI_CIT_BASIC_CREATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_CIT_BASIC_CREATE
*  INTO TABLE @DATA(IT_BAPI_CIT_BASIC_CREATE2).
*--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_BAPI_CIT_BASIC_CREATE INDEX 1 INTO DATA(WA_BAPI_CIT_BASIC_CREATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_CIT_BASIC_CREATE>-CITCLASS = 1.
<BAPI_CIT_BASIC_CREATE>-CONSUMPTIONITEMIDTYPE = 1.
<BAPI_CIT_BASIC_CREATE>-CONSUMPTIONITEMID = 1.
<BAPI_CIT_BASIC_CREATE>-CITTYPE = 1.
<BAPI_CIT_BASIC_CREATE>-BUSPARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_CIT_BASIC_CREATE-CONT_ACCT, sy-vline,
  WA_BAPI_CIT_BASIC_CREATE-CONTRACT, sy-vline,
  WA_BAPI_CIT_BASIC_CREATE-SUB_APPLICATION, sy-vline,
  WA_BAPI_CIT_BASIC_CREATE-CONTRACT_POS, sy-vline,
  WA_BAPI_CIT_BASIC_CREATE-CONTRACTITEMID, sy-vline,
  WA_BAPI_CIT_BASIC_CREATE-ACCESS_USERID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_CIT_BASIC_CREATE 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_BAPI_CIT_BASIC_CREATE 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_BAPI_CIT_BASIC_CREATE INTO WA_BAPI_CIT_BASIC_CREATE.


*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 BUSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CIT_BASIC_CREATE-BUSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CIT_BASIC_CREATE-BUSPARTNER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CITST, internal->external for field CONSUMDATE
CALL FUNCTION 'CONVERSION_EXIT_CITST_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CIT_BASIC_CREATE-CONSUMDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CIT_BASIC_CREATE-CONSUMDATE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SOURCETAID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CIT_BASIC_CREATE-SOURCETAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CIT_BASIC_CREATE-SOURCETAID.
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_BAPI_CIT_BASIC_CREATE_STR, 
CITCLASS TYPE STRING,
CONSUMPTIONITEMIDTYPE TYPE STRING,
CONSUMPTIONITEMID TYPE STRING,
CITTYPE TYPE STRING,
BUSPARTNER TYPE STRING,
CONT_ACCT TYPE STRING,
CONTRACT TYPE STRING,
SUB_APPLICATION TYPE STRING,
CONTRACT_POS TYPE STRING,
CONTRACTITEMID TYPE STRING,
ACCESS_USERID TYPE STRING,
ACCESS_USERID_TYPE TYPE STRING,
ACCESS_SERVICEID TYPE STRING,
CONSUMDATE TYPE STRING,
CITDATE TYPE STRING,
CITDATE_FROM TYPE STRING,
CITDATE_TO TYPE STRING,
CITTIME TYPE STRING,
RATINGDATE TYPE STRING,
RATE_BASEDATE TYPE STRING,
RATE_FIRST TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
ISOCODE_CURR TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_UNIT TYPE STRING,
ISOCODE_UNIT TYPE STRING,
SOURCETATYPE TYPE STRING,
SOURCETAID TYPE STRING,
SIMULATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_CIT_BASIC_CREATE_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_BAPI_CIT_BASIC_CREATE_STR-CITCLASS sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONSUMPTIONITEMIDTYPE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONSUMPTIONITEMID sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CITTYPE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-BUSPARTNER sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONT_ACCT sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONTRACT sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-SUB_APPLICATION sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONTRACT_POS sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONTRACTITEMID sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-ACCESS_USERID sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-ACCESS_USERID_TYPE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-ACCESS_SERVICEID sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CONSUMDATE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CITDATE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CITDATE_FROM sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CITDATE_TO sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CITTIME sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-RATINGDATE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-RATE_BASEDATE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-RATE_FIRST sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-AMOUNT sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-CURRENCY sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-ISOCODE_CURR sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-QUANTITY sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-QUANTITY_UNIT sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-ISOCODE_UNIT sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-SOURCETATYPE sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-SOURCETAID sy-vline 
WA_BAPI_CIT_BASIC_CREATE_STR-SIMULATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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