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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMC_FCS_POL_DOCSECT
*  INTO TABLE @DATA(IT_/MVA/AMC_FCS_POL_DOCSECT2).
*--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/AMC_FCS_POL_DOCSECT INDEX 1 INTO DATA(WA_/MVA/AMC_FCS_POL_DOCSECT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMC_FCS_POL_DOCSECT>-WA_DOCSECT = 1.
</MVA/AMC_FCS_POL_DOCSECT>-/PM0/ABDCDOCSECT_OID = 1.
</MVA/AMC_FCS_POL_DOCSECT>-DOCSECT_CD = 1.
</MVA/AMC_FCS_POL_DOCSECT>-SEND_FG = 1.
</MVA/AMC_FCS_POL_DOCSECT>-APPLKEY_CD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMC_FCS_POL_DOCSECT-APPLTYPE_CD, sy-vline,
  WA_/MVA/AMC_FCS_POL_DOCSECT-DOCIDENT_TT, sy-vline,
  WA_/MVA/AMC_FCS_POL_DOCSECT-BO_ID, sy-vline,
  WA_/MVA/AMC_FCS_POL_DOCSECT-POLICY_ID, sy-vline,
  WA_/MVA/AMC_FCS_POL_DOCSECT-PPDPAC_ID, sy-vline,
  WA_/MVA/AMC_FCS_POL_DOCSECT-POLPR_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMC_FCS_POL_DOCSECT 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/AMC_FCS_POL_DOCSECT 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/AMC_FCS_POL_DOCSECT INTO WA_/MVA/AMC_FCS_POL_DOCSECT.


*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 DOCSECT_CD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMC_FCS_POL_DOCSECT-DOCSECT_CD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMC_FCS_POL_DOCSECT-DOCSECT_CD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DATE_CD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMC_FCS_POL_DOCSECT-DATE_CD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMC_FCS_POL_DOCSECT-DATE_CD.
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/AMC_FCS_POL_DOCSECT_STR, 
WA_DOCSECT TYPE STRING,
/PM0/ABDCDOCSECT_OID TYPE STRING,
DOCSECT_CD TYPE STRING,
SEND_FG TYPE STRING,
APPLKEY_CD TYPE STRING,
APPLTYPE_CD TYPE STRING,
DOCIDENT_TT TYPE STRING,
BO_ID TYPE STRING,
POLICY_ID TYPE STRING,
PPDPAC_ID TYPE STRING,
POLPR_ID TYPE STRING,
COVPAC_ID TYPE STRING,
COVERAGE_ID TYPE STRING,
COVCPCO_ID TYPE STRING,
BIZPRC_ID TYPE STRING,
BTX_ID TYPE STRING,
ACTION_ID TYPE STRING,
DATE_CD TYPE STRING,
CUSTOMER_PB_CI TYPE STRING,
DOCSECT_TT TYPE STRING,
CUSTOMER_TB_CI TYPE STRING,
T_ADDRESS TYPE STRING,
T_TERMS TYPE STRING,
T_CORREVENT TYPE STRING,
T_POLICY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMC_FCS_POL_DOCSECT_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/AMC_FCS_POL_DOCSECT_STR-WA_DOCSECT sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-/PM0/ABDCDOCSECT_OID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-DOCSECT_CD sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-SEND_FG sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-APPLKEY_CD sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-APPLTYPE_CD sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-DOCIDENT_TT sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-BO_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-POLICY_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-PPDPAC_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-POLPR_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-COVPAC_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-COVERAGE_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-COVCPCO_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-BIZPRC_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-BTX_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-ACTION_ID sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-DATE_CD sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-CUSTOMER_PB_CI sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-DOCSECT_TT sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-CUSTOMER_TB_CI sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-T_ADDRESS sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-T_TERMS sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-T_CORREVENT sy-vline 
WA_/MVA/AMC_FCS_POL_DOCSECT_STR-T_POLICY sy-vline      INTO ld_text SEPARATED BY SPACE.

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