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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMWACLAIMSU
*  INTO TABLE @DATA(IT_/MVA/AMWACLAIMSU2).
*--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/AMWACLAIMSU INDEX 1 INTO DATA(WA_/MVA/AMWACLAIMSU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMWACLAIMSU>-LOB_CD = 1.
</MVA/AMWACLAIMSU>-PM_ID = 1.
</MVA/AMWACLAIMSU>-OLDSTEP_ID = 1.
</MVA/AMWACLAIMSU>-ANPREM_AM = 1.
</MVA/AMWACLAIMSU>-PRERATESUM_VL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMWACLAIMSU-ANPREMSUM_AM, sy-vline,
  WA_/MVA/AMWACLAIMSU-CURR_ID, sy-vline,
  WA_/MVA/AMWACLAIMSU-CORR_PLAN_FG, sy-vline,
  WA_/MVA/AMWACLAIMSU-UNRATEDCLAIMS_AM, sy-vline,
  WA_/MVA/AMWACLAIMSU-YAC_AM, sy-vline,
  WA_/MVA/AMWACLAIMSU-PRESTEPNOCL_TT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMWACLAIMSU 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/AMWACLAIMSU 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/AMWACLAIMSU INTO WA_/MVA/AMWACLAIMSU.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/MVA/AMWACLAIMSU_STR, 
LOB_CD TYPE STRING,
PM_ID TYPE STRING,
OLDSTEP_ID TYPE STRING,
ANPREM_AM TYPE STRING,
PRERATESUM_VL TYPE STRING,
ANPREMSUM_AM TYPE STRING,
CURR_ID TYPE STRING,
CORR_PLAN_FG TYPE STRING,
UNRATEDCLAIMS_AM TYPE STRING,
YAC_AM TYPE STRING,
PRESTEPNOCL_TT TYPE STRING,
PRESTEPCL_TT TYPE STRING,
PRERATENOCL_VL TYPE STRING,
PRERATECL_VL TYPE STRING,
PRERATEDIF_VL TYPE STRING,
ANPREMDIF_AM TYPE STRING,
CUSTOMER_PM_CI TYPE STRING,
NUMCLAIMS_AM TYPE STRING,
OLDSTEP_TT TYPE STRING,
CUSTOMER_TM_CI 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,
/MVA/BM_ID TYPE STRING,
/MVA/CLAIMSU_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMWACLAIMSU_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/AMWACLAIMSU_STR-LOB_CD sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PM_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-OLDSTEP_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-ANPREM_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRERATESUM_VL sy-vline 
WA_/MVA/AMWACLAIMSU_STR-ANPREMSUM_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-CURR_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-CORR_PLAN_FG sy-vline 
WA_/MVA/AMWACLAIMSU_STR-UNRATEDCLAIMS_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-YAC_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRESTEPNOCL_TT sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRESTEPCL_TT sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRERATENOCL_VL sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRERATECL_VL sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PRERATEDIF_VL sy-vline 
WA_/MVA/AMWACLAIMSU_STR-ANPREMDIF_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-CUSTOMER_PM_CI sy-vline 
WA_/MVA/AMWACLAIMSU_STR-NUMCLAIMS_AM sy-vline 
WA_/MVA/AMWACLAIMSU_STR-OLDSTEP_TT sy-vline 
WA_/MVA/AMWACLAIMSU_STR-CUSTOMER_TM_CI sy-vline 
WA_/MVA/AMWACLAIMSU_STR-BO_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-POLICY_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-PPDPAC_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-POLICYPRODUCT_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-COVPAC_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-COVERAGE_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-/MVA/BM_ID sy-vline 
WA_/MVA/AMWACLAIMSU_STR-/MVA/CLAIMSU_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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