ABAP Select data from SAP table IDSAU_CR_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDSAU_CR_DATA
*  INTO TABLE @DATA(IT_IDSAU_CR_DATA2).
*--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_IDSAU_CR_DATA INDEX 1 INTO DATA(WA_IDSAU_CR_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDSAU_CR_DATA>-MANDT = 1.
<IDSAU_CR_DATA>-LIFNR = 1.
<IDSAU_CR_DATA>-BUKRS = 1.
<IDSAU_CR_DATA>-CERT_ID = 1.
<IDSAU_CR_DATA>-CERT_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDSAU_CR_DATA-VALID_FROM, sy-vline,
  WA_IDSAU_CR_DATA-VALID_TO, sy-vline,
  WA_IDSAU_CR_DATA-REG_CITY, sy-vline,
  WA_IDSAU_CR_DATA-EXEMPT, sy-vline,
  WA_IDSAU_CR_DATA-EXEMPT_REASON, sy-vline,
  WA_IDSAU_CR_DATA-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDSAU_CR_DATA 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_IDSAU_CR_DATA 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_IDSAU_CR_DATA INTO WA_IDSAU_CR_DATA.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDSAU_CR_DATA-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDSAU_CR_DATA-LIFNR.
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_IDSAU_CR_DATA_STR, 
MANDT TYPE STRING,
LIFNR TYPE STRING,
BUKRS TYPE STRING,
CERT_ID TYPE STRING,
CERT_NO TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
REG_CITY TYPE STRING,
EXEMPT TYPE STRING,
EXEMPT_REASON TYPE STRING,
STATUS TYPE STRING,
MAIN_CERT TYPE STRING,
CREATION_DATE TYPE STRING,
DESCRIPTION1 TYPE STRING,
DESCRIPTION2 TYPE STRING,
DATE1 TYPE STRING,
DATE2 TYPE STRING,
NUMBER1 TYPE STRING,
NUMBER2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDSAU_CR_DATA_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_IDSAU_CR_DATA_STR-MANDT sy-vline 
WA_IDSAU_CR_DATA_STR-LIFNR sy-vline 
WA_IDSAU_CR_DATA_STR-BUKRS sy-vline 
WA_IDSAU_CR_DATA_STR-CERT_ID sy-vline 
WA_IDSAU_CR_DATA_STR-CERT_NO sy-vline 
WA_IDSAU_CR_DATA_STR-VALID_FROM sy-vline 
WA_IDSAU_CR_DATA_STR-VALID_TO sy-vline 
WA_IDSAU_CR_DATA_STR-REG_CITY sy-vline 
WA_IDSAU_CR_DATA_STR-EXEMPT sy-vline 
WA_IDSAU_CR_DATA_STR-EXEMPT_REASON sy-vline 
WA_IDSAU_CR_DATA_STR-STATUS sy-vline 
WA_IDSAU_CR_DATA_STR-MAIN_CERT sy-vline 
WA_IDSAU_CR_DATA_STR-CREATION_DATE sy-vline 
WA_IDSAU_CR_DATA_STR-DESCRIPTION1 sy-vline 
WA_IDSAU_CR_DATA_STR-DESCRIPTION2 sy-vline 
WA_IDSAU_CR_DATA_STR-DATE1 sy-vline 
WA_IDSAU_CR_DATA_STR-DATE2 sy-vline 
WA_IDSAU_CR_DATA_STR-NUMBER1 sy-vline 
WA_IDSAU_CR_DATA_STR-NUMBER2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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