ABAP Select data from SAP table /MVA/AMDVEXPREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMDVEXPREQ
*  INTO TABLE @DATA(IT_/MVA/AMDVEXPREQ2).
*--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_/MVA/AMDVEXPREQ INDEX 1 INTO DATA(WA_/MVA/AMDVEXPREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMDVEXPREQ>-CLIENT = 1.
</MVA/AMDVEXPREQ>-RECORD_TYPE_CD = 1.
</MVA/AMDVEXPREQ>-INSURER_ID = 1.
</MVA/AMDVEXPREQ>-MESSAGE_DT = 1.
</MVA/AMDVEXPREQ>-RECORD_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMDVEXPREQ-POST_INSURER_ID, sy-vline,
  WA_/MVA/AMDVEXPREQ-POST_OFFICE_ID, sy-vline,
  WA_/MVA/AMDVEXPREQ-POSTINS_CHECK_VL, sy-vline,
  WA_/MVA/AMDVEXPREQ-POSTINS_POLNR_TT, sy-vline,
  WA_/MVA/AMDVEXPREQ-REQUEST_ID, sy-vline,
  WA_/MVA/AMDVEXPREQ-POSTINS_VEH_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMDVEXPREQ 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_/MVA/AMDVEXPREQ 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_/MVA/AMDVEXPREQ INTO WA_/MVA/AMDVEXPREQ.


*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 RECID, internal->external for field RECORD_ID
CALL FUNCTION 'CONVERSION_EXIT_RECID_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMDVEXPREQ-RECORD_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMDVEXPREQ-RECORD_ID.
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_/MVA/AMDVEXPREQ_STR, 
CLIENT TYPE STRING,
RECORD_TYPE_CD TYPE STRING,
INSURER_ID TYPE STRING,
MESSAGE_DT TYPE STRING,
RECORD_ID TYPE STRING,
POST_INSURER_ID TYPE STRING,
POST_OFFICE_ID TYPE STRING,
POSTINS_CHECK_VL TYPE STRING,
POSTINS_POLNR_TT TYPE STRING,
REQUEST_ID TYPE STRING,
POSTINS_VEH_ID TYPE STRING,
POSTINS_BEGIN_DT TYPE STRING,
SALUTATION_CD TYPE STRING,
NAME1_TT TYPE STRING,
NAME2_TT TYPE STRING,
NAME3_TT TYPE STRING,
STREET_TT TYPE STRING,
COUNTRY_CD TYPE STRING,
ZIPCODE_ID TYPE STRING,
CITY_TT TYPE STRING,
PRE_INSURER_ID TYPE STRING,
PRE_OFFICE_ID TYPE STRING,
PREINS_CHECK_VL TYPE STRING,
PREINS_POLNR_TT TYPE STRING,
PREINS_LICNR_TT TYPE STRING,
CERT_SUBMIT_FG TYPE STRING,
REMIND_VL TYPE STRING,
STATE_ID TYPE STRING,
PROCESS_ID TYPE STRING,
SHIPPING_DT TYPE STRING,
ACTION_ID TYPE STRING,
ACTIVITY_CD TYPE STRING,
PREINS_VEH_ID TYPE STRING,
CORR_REASON_CD TYPE STRING,
CORR_DT TYPE STRING,
RETURN_CAUSE_CD TYPE STRING,
INT_MAPPING_TT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMDVEXPREQ_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_/MVA/AMDVEXPREQ_STR-CLIENT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-RECORD_TYPE_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-INSURER_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-MESSAGE_DT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-RECORD_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POST_INSURER_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POST_OFFICE_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POSTINS_CHECK_VL sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POSTINS_POLNR_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-REQUEST_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POSTINS_VEH_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-POSTINS_BEGIN_DT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-SALUTATION_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-NAME1_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-NAME2_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-NAME3_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-STREET_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-COUNTRY_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-ZIPCODE_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-CITY_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PRE_INSURER_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PRE_OFFICE_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PREINS_CHECK_VL sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PREINS_POLNR_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PREINS_LICNR_TT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-CERT_SUBMIT_FG sy-vline 
WA_/MVA/AMDVEXPREQ_STR-REMIND_VL sy-vline 
WA_/MVA/AMDVEXPREQ_STR-STATE_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PROCESS_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-SHIPPING_DT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-ACTION_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-ACTIVITY_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-PREINS_VEH_ID sy-vline 
WA_/MVA/AMDVEXPREQ_STR-CORR_REASON_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-CORR_DT sy-vline 
WA_/MVA/AMDVEXPREQ_STR-RETURN_CAUSE_CD sy-vline 
WA_/MVA/AMDVEXPREQ_STR-INT_MAPPING_TT sy-vline      INTO ld_text SEPARATED BY SPACE.

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