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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMDCNAMDRV
*  INTO TABLE @DATA(IT_/MVA/AMDCNAMDRV2).
*--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/AMDCNAMDRV INDEX 1 INTO DATA(WA_/MVA/AMDCNAMDRV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMDCNAMDRV>-CLIENT = 1.
</MVA/AMDCNAMDRV>-DCC_GUID = 1.
</MVA/AMDCNAMDRV>-DC_GUID = 1.
</MVA/AMDCNAMDRV>-BO_ID = 1.
</MVA/AMDCNAMDRV>-POLICY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMDCNAMDRV-PPDPAC_ID, sy-vline,
  WA_/MVA/AMDCNAMDRV-POLICYPRODUCT_ID, sy-vline,
  WA_/MVA/AMDCNAMDRV-COVPAC_ID, sy-vline,
  WA_/MVA/AMDCNAMDRV-COVERAGE_ID, sy-vline,
  WA_/MVA/AMDCNAMDRV-COVCP_ID, sy-vline,
  WA_/MVA/AMDCNAMDRV-SUBJECT_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMDCNAMDRV 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/AMDCNAMDRV 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/AMDCNAMDRV INTO WA_/MVA/AMDCNAMDRV.


*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 J7ADR, internal->external for field ADDRESSNUMBER_ID
CALL FUNCTION 'CONVERSION_EXIT_J7ADR_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMDCNAMDRV-ADDRESSNUMBER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMDCNAMDRV-ADDRESSNUMBER_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMDCNAMDRV-PARTNER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMDCNAMDRV-PARTNER_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/AMDCNAMDRV_STR, 
CLIENT TYPE STRING,
DCC_GUID TYPE STRING,
DC_GUID TYPE STRING,
BO_ID TYPE STRING,
POLICY_ID TYPE STRING,
PPDPAC_ID TYPE STRING,
POLICYPRODUCT_ID TYPE STRING,
COVPAC_ID TYPE STRING,
COVERAGE_ID TYPE STRING,
COVCP_ID TYPE STRING,
SUBJECT_ID TYPE STRING,
NAMDRV_ID TYPE STRING,
UPD_CD TYPE STRING,
ADDRESSNUMBER_ID TYPE STRING,
PARTNER_ID TYPE STRING,
BIRTH_DT TYPE STRING,
DRIVERCATEGORY_CD TYPE STRING,
GENDER_CD TYPE STRING,
DRIVERLICENCE_ID TYPE STRING,
LICENCE_DT TYPE STRING,
MARITALSTATUS_CD TYPE STRING,
PM_ID TYPE STRING,
CUSTOMER_PM_CI TYPE STRING,
AMDANAMDRF_X TYPE STRING,
ADDRESSNUMBER_ID_X TYPE STRING,
PARTNER_ID_X TYPE STRING,
BIRTH_DT_X TYPE STRING,
DRIVERCATEGORY_CD_X TYPE STRING,
LICENCE_DT_X TYPE STRING,
MARITALSTATUS_CD_X TYPE STRING,
PM_ID_X TYPE STRING,
CUSTOMER_PM_CI_X TYPE STRING,
ADRESSE_TT_X TYPE STRING,
DRIVERCATEGORY_TT_X TYPE STRING,
GENDER_TT_X TYPE STRING,
MARITALSTATUS_TT_X TYPE STRING,
PARTNERNAME_TT_X TYPE STRING,
CUSTOMER_TM_CI_X TYPE STRING,
POL_TMPL_ID TYPE STRING,
POLPRPAC_TMPL_ID TYPE STRING,
POLPR_TMPL_ID TYPE STRING,
COVPAC_TMPL_ID TYPE STRING,
COV_TMPL_ID TYPE STRING,
COVCPCO_TMPL_ID TYPE STRING,
SUBJCTPM_TMPL_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMDCNAMDRV_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/AMDCNAMDRV_STR-CLIENT sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DCC_GUID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DC_GUID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-BO_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-POLICY_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PPDPAC_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-POLICYPRODUCT_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COVPAC_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COVERAGE_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COVCP_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-SUBJECT_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-NAMDRV_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-UPD_CD sy-vline 
WA_/MVA/AMDCNAMDRV_STR-ADDRESSNUMBER_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PARTNER_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-BIRTH_DT sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DRIVERCATEGORY_CD sy-vline 
WA_/MVA/AMDCNAMDRV_STR-GENDER_CD sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DRIVERLICENCE_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-LICENCE_DT sy-vline 
WA_/MVA/AMDCNAMDRV_STR-MARITALSTATUS_CD sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PM_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-CUSTOMER_PM_CI sy-vline 
WA_/MVA/AMDCNAMDRV_STR-AMDANAMDRF_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-ADDRESSNUMBER_ID_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PARTNER_ID_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-BIRTH_DT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DRIVERCATEGORY_CD_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-LICENCE_DT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-MARITALSTATUS_CD_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PM_ID_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-CUSTOMER_PM_CI_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-ADRESSE_TT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-DRIVERCATEGORY_TT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-GENDER_TT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-MARITALSTATUS_TT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-PARTNERNAME_TT_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-CUSTOMER_TM_CI_X sy-vline 
WA_/MVA/AMDCNAMDRV_STR-POL_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-POLPRPAC_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-POLPR_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COVPAC_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COV_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-COVCPCO_TMPL_ID sy-vline 
WA_/MVA/AMDCNAMDRV_STR-SUBJCTPM_TMPL_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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