ABAP Select data from SAP table PCAINSTLMNTPLN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PCAINSTLMNTPLN 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 PCAINSTLMNTPLN. 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 PCAINSTLMNTPLN 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_PCAINSTLMNTPLN TYPE STANDARD TABLE OF PCAINSTLMNTPLN,
      WA_PCAINSTLMNTPLN TYPE PCAINSTLMNTPLN,
      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: <PCAINSTLMNTPLN> TYPE PCAINSTLMNTPLN.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PCAINSTLMNTPLN
  INTO TABLE IT_PCAINSTLMNTPLN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCAINSTLMNTPLN
*  INTO TABLE @DATA(IT_PCAINSTLMNTPLN2).
*--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_PCAINSTLMNTPLN INDEX 1 INTO DATA(WA_PCAINSTLMNTPLN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PCAINSTLMNTPLN ASSIGNING <PCAINSTLMNTPLN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCAINSTLMNTPLN>-MANDT = 1.
<PCAINSTLMNTPLN>-CAINSTALLMENTPLAN = 1.
<PCAINSTLMNTPLN>-CAREPETITIONITEMNUMBER = 1.
<PCAINSTLMNTPLN>-CABPITEMNUMBER = 1.
<PCAINSTLMNTPLN>-CASUBITEMNUMBER = 1.

ENDLOOP.

LOOP AT IT_PCAINSTLMNTPLN INTO WA_PCAINSTLMNTPLN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCAINSTLMNTPLN-BUSINESSPARTNER, sy-vline,
  WA_PCAINSTLMNTPLN-BUSINESSPARTNERNAME, sy-vline,
  WA_PCAINSTLMNTPLN-FIRSTNAME, sy-vline,
  WA_PCAINSTLMNTPLN-LASTNAME, sy-vline,
  WA_PCAINSTLMNTPLN-POSTALCODE, sy-vline,
  WA_PCAINSTLMNTPLN-CONTRACTACCOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCAINSTLMNTPLN 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_PCAINSTLMNTPLN 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_PCAINSTLMNTPLN INTO WA_PCAINSTLMNTPLN.


*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 CAINSTALLMENTPLAN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCAINSTLMNTPLN-CAINSTALLMENTPLAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAINSTLMNTPLN-CAINSTALLMENTPLAN.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCAINSTLMNTPLN-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAINSTLMNTPLN-SEGMENT.
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_PCAINSTLMNTPLN_STR, 
MANDT TYPE STRING,
CAINSTALLMENTPLAN TYPE STRING,
CAREPETITIONITEMNUMBER TYPE STRING,
CABPITEMNUMBER TYPE STRING,
CASUBITEMNUMBER TYPE STRING,
BUSINESSPARTNER TYPE STRING,
BUSINESSPARTNERNAME TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
POSTALCODE TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CONTRACTACCOUNTCATEGORY TYPE STRING,
CONTRACTACCOUNTCATEGORYNAME TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSAREA TYPE STRING,
SEGMENT TYPE STRING,
CAINSTALLMENTPLANCATEGORY TYPE STRING,
CAINSTALLMENTPLANCATEGORYNAME TYPE STRING,
CAINSTLMNTPLANGOODWILLVALUE TYPE STRING,
CANUMBEROFINSTALLMENTS TYPE STRING,
CAINSTALLMENTPLANSTATUS TYPE STRING,
CAWORKFLOWCHECKPROCESS TYPE STRING,
CAINSTLMNTPLANDACTVTNRSN TYPE STRING,
CAINSTLMNTPLANDACTVTNRSNNAME TYPE STRING,
CAINSTALLMENTPLANSTARTDATE TYPE STRING,
CAINSTALLMENTPLANENDDATE TYPE STRING,
CAINSTLMNTPLANDEACTIVATIONDATE TYPE STRING,
CAINSTALLMENTPLANTERM TYPE STRING,
CAINSTALLMENTPLANISSUEDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
CACLEARINGSTATUS TYPE STRING,
CAINSTALLMENTDAYSINARREARS TYPE STRING,
CACLEARINGDATE TYPE STRING,
EXCHANGERATEDATE TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAINSTLMNTPLANFULFILLMENTRATE TYPE STRING,
CAAUTHORIZATIONGROUP TYPE STRING,
CAPROVIDERCONTRACTAUTHZNGROUP TYPE STRING,
WORKLISTITEMCREATIONDATE TYPE STRING,
CACLRFCTNSTATUS TYPE STRING,
CACLRFCTNSTATUSNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCAINSTLMNTPLN_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_PCAINSTLMNTPLN_STR-MANDT sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLAN sy-vline 
WA_PCAINSTLMNTPLN_STR-CAREPETITIONITEMNUMBER sy-vline 
WA_PCAINSTLMNTPLN_STR-CABPITEMNUMBER sy-vline 
WA_PCAINSTLMNTPLN_STR-CASUBITEMNUMBER sy-vline 
WA_PCAINSTLMNTPLN_STR-BUSINESSPARTNER sy-vline 
WA_PCAINSTLMNTPLN_STR-BUSINESSPARTNERNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-FIRSTNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-LASTNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-POSTALCODE sy-vline 
WA_PCAINSTLMNTPLN_STR-CONTRACTACCOUNT sy-vline 
WA_PCAINSTLMNTPLN_STR-CONTRACTACCOUNTCATEGORY sy-vline 
WA_PCAINSTLMNTPLN_STR-CONTRACTACCOUNTCATEGORYNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-CACONTRACT sy-vline 
WA_PCAINSTLMNTPLN_STR-CASUBAPPLICATION sy-vline 
WA_PCAINSTLMNTPLN_STR-COMPANYCODE sy-vline 
WA_PCAINSTLMNTPLN_STR-BUSINESSAREA sy-vline 
WA_PCAINSTLMNTPLN_STR-SEGMENT sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANCATEGORY sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANCATEGORYNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTLMNTPLANGOODWILLVALUE sy-vline 
WA_PCAINSTLMNTPLN_STR-CANUMBEROFINSTALLMENTS sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANSTATUS sy-vline 
WA_PCAINSTLMNTPLN_STR-CAWORKFLOWCHECKPROCESS sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTLMNTPLANDACTVTNRSN sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTLMNTPLANDACTVTNRSNNAME sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANSTARTDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANENDDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTLMNTPLANDEACTIVATIONDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANTERM sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTPLANISSUEDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CANETDUEDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CACLEARINGSTATUS sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTALLMENTDAYSINARREARS sy-vline 
WA_PCAINSTLMNTPLN_STR-CACLEARINGDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-EXCHANGERATEDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_PCAINSTLMNTPLN_STR-TRANSACTIONCURRENCY sy-vline 
WA_PCAINSTLMNTPLN_STR-CAINSTLMNTPLANFULFILLMENTRATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CAAUTHORIZATIONGROUP sy-vline 
WA_PCAINSTLMNTPLN_STR-CAPROVIDERCONTRACTAUTHZNGROUP sy-vline 
WA_PCAINSTLMNTPLN_STR-WORKLISTITEMCREATIONDATE sy-vline 
WA_PCAINSTLMNTPLN_STR-CACLRFCTNSTATUS sy-vline 
WA_PCAINSTLMNTPLN_STR-CACLRFCTNSTATUSNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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