ABAP Select data from SAP table /PMG/GE_EXTPOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PMG/GE_EXTPOL
*  INTO TABLE @DATA(IT_/PMG/GE_EXTPOL2).
*--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_/PMG/GE_EXTPOL INDEX 1 INTO DATA(WA_/PMG/GE_EXTPOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PMG/GE_EXTPOL>-INSURED_AM = 1.
</PMG/GE_EXTPOL>-NUMBCLAIM_AM = 1.
</PMG/GE_EXTPOL>-COMPENS_AM = 1.
</PMG/GE_EXTPOL>-EXTPOLTP_CD = 1.
</PMG/GE_EXTPOL>-POLNUM_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PMG/GE_EXTPOL-BEGINN_DT, sy-vline,
  WA_/PMG/GE_EXTPOL-EXPIRAT_DT, sy-vline,
  WA_/PMG/GE_EXTPOL-PREMIUM_AM, sy-vline,
  WA_/PMG/GE_EXTPOL-SHARE_VL, sy-vline,
  WA_/PMG/GE_EXTPOL-CANCREAS_CD, sy-vline,
  WA_/PMG/GE_EXTPOL-PARTNER_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PMG/GE_EXTPOL 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_/PMG/GE_EXTPOL 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_/PMG/GE_EXTPOL INTO WA_/PMG/GE_EXTPOL.


*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 POLNUM_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PMG/GE_EXTPOL-POLNUM_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PMG/GE_EXTPOL-POLNUM_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PMG/GE_EXTPOL-PARTNER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PMG/GE_EXTPOL-PARTNER_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit J7ADR, internal->external for field ADDRESSNUMBER_ID
CALL FUNCTION 'CONVERSION_EXIT_J7ADR_OUTPUT'
  EXPORTING
    input =                      WA_/PMG/GE_EXTPOL-ADDRESSNUMBER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PMG/GE_EXTPOL-ADDRESSNUMBER_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_/PMG/GE_EXTPOL_STR, 
INSURED_AM TYPE STRING,
NUMBCLAIM_AM TYPE STRING,
COMPENS_AM TYPE STRING,
EXTPOLTP_CD TYPE STRING,
POLNUM_ID TYPE STRING,
BEGINN_DT TYPE STRING,
EXPIRAT_DT TYPE STRING,
PREMIUM_AM TYPE STRING,
SHARE_VL TYPE STRING,
CANCREAS_CD TYPE STRING,
PARTNER_ID TYPE STRING,
ADDRESSNUMBER_ID TYPE STRING,
COMMENT_ID TYPE STRING,
CURRENCY_ID TYPE STRING,
PM_ID TYPE STRING,
CUSTOMER_PB_CI TYPE STRING,
ADDRESS_TT TYPE STRING,
BANKACCOUNT_TT TYPE STRING,
CANCREAS_TT TYPE STRING,
CLAIMLOB_TT TYPE STRING,
EXTPOLTP_TT TYPE STRING,
INSCMP_TT TYPE STRING,
LEGALENTY_ID TYPE STRING,
LEGALENTY_TT TYPE STRING,
NAME_TT TYPE STRING,
NOTE_FG TYPE STRING,
PAYMENTCARD_TT TYPE STRING,
CUSTOMER_TB_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,
COVCP_ID TYPE STRING,
SUBJECT_ID TYPE STRING,
EXTPOL_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PMG/GE_EXTPOL_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_/PMG/GE_EXTPOL_STR-INSURED_AM sy-vline 
WA_/PMG/GE_EXTPOL_STR-NUMBCLAIM_AM sy-vline 
WA_/PMG/GE_EXTPOL_STR-COMPENS_AM sy-vline 
WA_/PMG/GE_EXTPOL_STR-EXTPOLTP_CD sy-vline 
WA_/PMG/GE_EXTPOL_STR-POLNUM_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-BEGINN_DT sy-vline 
WA_/PMG/GE_EXTPOL_STR-EXPIRAT_DT sy-vline 
WA_/PMG/GE_EXTPOL_STR-PREMIUM_AM sy-vline 
WA_/PMG/GE_EXTPOL_STR-SHARE_VL sy-vline 
WA_/PMG/GE_EXTPOL_STR-CANCREAS_CD sy-vline 
WA_/PMG/GE_EXTPOL_STR-PARTNER_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-ADDRESSNUMBER_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-COMMENT_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-CURRENCY_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-PM_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-CUSTOMER_PB_CI sy-vline 
WA_/PMG/GE_EXTPOL_STR-ADDRESS_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-BANKACCOUNT_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-CANCREAS_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-CLAIMLOB_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-EXTPOLTP_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-INSCMP_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-LEGALENTY_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-LEGALENTY_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-NAME_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-NOTE_FG sy-vline 
WA_/PMG/GE_EXTPOL_STR-PAYMENTCARD_TT sy-vline 
WA_/PMG/GE_EXTPOL_STR-CUSTOMER_TB_CI sy-vline 
WA_/PMG/GE_EXTPOL_STR-BO_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-POLICY_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-PPDPAC_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-POLICYPRODUCT_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-COVPAC_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-COVERAGE_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-COVCP_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-SUBJECT_ID sy-vline 
WA_/PMG/GE_EXTPOL_STR-EXTPOL_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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