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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMDACERT
*  INTO TABLE @DATA(IT_/MVA/AMDACERT2).
*--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/AMDACERT INDEX 1 INTO DATA(WA_/MVA/AMDACERT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMDACERT>-CLIENT = 1.
</MVA/AMDACERT>-POLICY_ID = 1.
</MVA/AMDACERT>-POLICYPRODUCT_ID = 1.
</MVA/AMDACERT>-JOURNALENDNO_ID = 1.
</MVA/AMDACERT>-JOURNALNO_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMDACERT-COVPAC_ID, sy-vline,
  WA_/MVA/AMDACERT-COVERAGE_ID, sy-vline,
  WA_/MVA/AMDACERT-/MVA/BM_ID, sy-vline,
  WA_/MVA/AMDACERT-/MVA/CERT_ID, sy-vline,
  WA_/MVA/AMDACERT-PPDPAC_ID, sy-vline,
  WA_/MVA/AMDACERT-CANCEL_FG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMDACERT 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/AMDACERT 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/AMDACERT INTO WA_/MVA/AMDACERT.


*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 BP_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMDACERT-BP_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMDACERT-BP_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/AMDACERT_STR, 
CLIENT TYPE STRING,
POLICY_ID TYPE STRING,
POLICYPRODUCT_ID TYPE STRING,
JOURNALENDNO_ID TYPE STRING,
JOURNALNO_ID TYPE STRING,
COVPAC_ID TYPE STRING,
COVERAGE_ID TYPE STRING,
/MVA/BM_ID TYPE STRING,
/MVA/CERT_ID TYPE STRING,
PPDPAC_ID TYPE STRING,
CANCEL_FG TYPE STRING,
/MVA/BMDATA_ID TYPE STRING,
BP_ID TYPE STRING,
/MVA/EFFECTIV_DT TYPE STRING,
/MVA/YODEXT_DT TYPE STRING,
/MVA/PRSTEXT_ID TYPE STRING,
/MVA/BRKDAYE_AM TYPE STRING,
/MVA/CLAIMSE_AM TYPE STRING,
/MVA/BMSTATE_ID TYPE STRING,
POLPRODEND_DT TYPE STRING,
CUSTOMER_PM_CI TYPE STRING,
BO_CD TYPE STRING,
CHANGE_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMDACERT_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/AMDACERT_STR-CLIENT sy-vline 
WA_/MVA/AMDACERT_STR-POLICY_ID sy-vline 
WA_/MVA/AMDACERT_STR-POLICYPRODUCT_ID sy-vline 
WA_/MVA/AMDACERT_STR-JOURNALENDNO_ID sy-vline 
WA_/MVA/AMDACERT_STR-JOURNALNO_ID sy-vline 
WA_/MVA/AMDACERT_STR-COVPAC_ID sy-vline 
WA_/MVA/AMDACERT_STR-COVERAGE_ID sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/BM_ID sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/CERT_ID sy-vline 
WA_/MVA/AMDACERT_STR-PPDPAC_ID sy-vline 
WA_/MVA/AMDACERT_STR-CANCEL_FG sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/BMDATA_ID sy-vline 
WA_/MVA/AMDACERT_STR-BP_ID sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/EFFECTIV_DT sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/YODEXT_DT sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/PRSTEXT_ID sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/BRKDAYE_AM sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/CLAIMSE_AM sy-vline 
WA_/MVA/AMDACERT_STR-/MVA/BMSTATE_ID sy-vline 
WA_/MVA/AMDACERT_STR-POLPRODEND_DT sy-vline 
WA_/MVA/AMDACERT_STR-CUSTOMER_PM_CI sy-vline 
WA_/MVA/AMDACERT_STR-BO_CD sy-vline 
WA_/MVA/AMDACERT_STR-CHANGE_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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