ABAP Select data from SAP table IPVCONTRACT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPVCONTRACT 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 IPVCONTRACT. 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 IPVCONTRACT 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_IPVCONTRACT TYPE STANDARD TABLE OF IPVCONTRACT,
      WA_IPVCONTRACT TYPE IPVCONTRACT,
      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: <IPVCONTRACT> TYPE IPVCONTRACT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPVCONTRACT
*  INTO TABLE @DATA(IT_IPVCONTRACT2).
*--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_IPVCONTRACT INDEX 1 INTO DATA(WA_IPVCONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPVCONTRACT>-MANDT = 1.
<IPVCONTRACT>-PRACONTRACT = 1.
<IPVCONTRACT>-PRACONTRACTDESC = 1.
<IPVCONTRACT>-PRACONTRACTDATE = 1.
<IPVCONTRACT>-SOLDTOPARTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPVCONTRACT-COMPANYCODE, sy-vline,
  WA_IPVCONTRACT-PRACONTRACTTYPE, sy-vline,
  WA_IPVCONTRACT-ISAPPROVED, sy-vline,
  WA_IPVCONTRACT-PREVIOUSPRACONTRACT, sy-vline,
  WA_IPVCONTRACT-CUSTOMERORSUPPLIERTYPE, sy-vline,
  WA_IPVCONTRACT-MARKETINGREP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPVCONTRACT 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_IPVCONTRACT 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_IPVCONTRACT INTO WA_IPVCONTRACT.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field MARKETINGREPSUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPVCONTRACT-MARKETINGREPSUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPVCONTRACT-MARKETINGREPSUPPLIER.
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_IPVCONTRACT_STR, 
MANDT TYPE STRING,
PRACONTRACT TYPE STRING,
PRACONTRACTDESC TYPE STRING,
PRACONTRACTDATE TYPE STRING,
SOLDTOPARTY TYPE STRING,
COMPANYCODE TYPE STRING,
PRACONTRACTTYPE TYPE STRING,
ISAPPROVED TYPE STRING,
PREVIOUSPRACONTRACT TYPE STRING,
CUSTOMERORSUPPLIERTYPE TYPE STRING,
MARKETINGREP TYPE STRING,
MARKETINGREPINTRSTSEQUNMBR TYPE STRING,
MARKETINGREPNAME TYPE STRING,
MARKETINGREPCUSTOMER TYPE STRING,
MARKETINGREPSUPPLIER TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPVCONTRACT_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_IPVCONTRACT_STR-MANDT sy-vline 
WA_IPVCONTRACT_STR-PRACONTRACT sy-vline 
WA_IPVCONTRACT_STR-PRACONTRACTDESC sy-vline 
WA_IPVCONTRACT_STR-PRACONTRACTDATE sy-vline 
WA_IPVCONTRACT_STR-SOLDTOPARTY sy-vline 
WA_IPVCONTRACT_STR-COMPANYCODE sy-vline 
WA_IPVCONTRACT_STR-PRACONTRACTTYPE sy-vline 
WA_IPVCONTRACT_STR-ISAPPROVED sy-vline 
WA_IPVCONTRACT_STR-PREVIOUSPRACONTRACT sy-vline 
WA_IPVCONTRACT_STR-CUSTOMERORSUPPLIERTYPE sy-vline 
WA_IPVCONTRACT_STR-MARKETINGREP sy-vline 
WA_IPVCONTRACT_STR-MARKETINGREPINTRSTSEQUNMBR sy-vline 
WA_IPVCONTRACT_STR-MARKETINGREPNAME sy-vline 
WA_IPVCONTRACT_STR-MARKETINGREPCUSTOMER sy-vline 
WA_IPVCONTRACT_STR-MARKETINGREPSUPPLIER sy-vline 
WA_IPVCONTRACT_STR-CREATEDBYUSER sy-vline 
WA_IPVCONTRACT_STR-CREATIONDATE sy-vline 
WA_IPVCONTRACT_STR-CREATIONTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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