ABAP Select data from SAP table UISS_S_CORRPOST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UISS_S_CORRPOST
*  INTO TABLE @DATA(IT_UISS_S_CORRPOST2).
*--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_UISS_S_CORRPOST INDEX 1 INTO DATA(WA_UISS_S_CORRPOST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UISS_S_CORRPOST>-ITEMKEY = 1.
<UISS_S_CORRPOST>-CO_AREA = 1.
<UISS_S_CORRPOST>-DOCUMENT_NUMBER = 1.
<UISS_S_CORRPOST>-DOCUMENT_ITEM = 1.
<UISS_S_CORRPOST>-POSTING_ROW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UISS_S_CORRPOST-POSTINGDATE, sy-vline,
  WA_UISS_S_CORRPOST-COSTELEMENT, sy-vline,
  WA_UISS_S_CORRPOST-CURRENCY, sy-vline,
  WA_UISS_S_CORRPOST-OLD_AMOUNT, sy-vline,
  WA_UISS_S_CORRPOST-OLD_QUANTITY, sy-vline,
  WA_UISS_S_CORRPOST-OLD_UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UISS_S_CORRPOST 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_UISS_S_CORRPOST 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_UISS_S_CORRPOST INTO WA_UISS_S_CORRPOST.


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

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

*Conversion exit CUNIT, internal->external for field OLD_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-OLD_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-OLD_UNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field OLD_WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-OLD_WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-OLD_WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit NUMCV, internal->external for field OLD_NETWORK_ACTIVITY
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-OLD_NETWORK_ACTIVITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-OLD_NETWORK_ACTIVITY.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field NEW_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-NEW_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-NEW_UNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field NEW_WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-NEW_WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-NEW_WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit NUMCV, internal->external for field NEW_NETWORK_ACTIVITY
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-NEW_NETWORK_ACTIVITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-NEW_NETWORK_ACTIVITY.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UISS_S_CORRPOST-SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UISS_S_CORRPOST-SYSTEM.
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_UISS_S_CORRPOST_STR, 
ITEMKEY TYPE STRING,
CO_AREA TYPE STRING,
DOCUMENT_NUMBER TYPE STRING,
DOCUMENT_ITEM TYPE STRING,
POSTING_ROW TYPE STRING,
POSTINGDATE TYPE STRING,
COSTELEMENT TYPE STRING,
CURRENCY TYPE STRING,
OLD_AMOUNT TYPE STRING,
OLD_QUANTITY TYPE STRING,
OLD_UNIT TYPE STRING,
OLD_TEXT TYPE STRING,
OLD_COSTCENTER TYPE STRING,
OLD_ORDER TYPE STRING,
OLD_WBSELEMENT TYPE STRING,
OLD_SALESORDER TYPE STRING,
OLD_SALESORDER_ITEM TYPE STRING,
OLD_COSTOBJECT TYPE STRING,
OLD_NETWORK TYPE STRING,
OLD_NETWORK_ACTIVITY TYPE STRING,
OLD_BUSINESS_PROCESS TYPE STRING,
OLD_ACC_INDICATOR TYPE STRING,
OLD_RECOVERY_INDICATOR TYPE STRING,
OLD_FUND TYPE STRING,
OLD_FUNCTIONAL_AREA TYPE STRING,
OLD_GRANT TYPE STRING,
NEW_AMOUNT TYPE STRING,
NEW_QUANTITY TYPE STRING,
NEW_UNIT TYPE STRING,
NEW_TEXT TYPE STRING,
NEW_COSTCENTER TYPE STRING,
NEW_ORDER TYPE STRING,
NEW_WBSELEMENT TYPE STRING,
NEW_SALESORDER TYPE STRING,
NEW_SALESORDER_ITEM TYPE STRING,
NEW_COSTOBJECT TYPE STRING,
NEW_NETWORK TYPE STRING,
NEW_NETWORK_ACTIVITY TYPE STRING,
NEW_BUSINESS_PROCESS TYPE STRING,
NEW_ACC_INDICATOR TYPE STRING,
NEW_RECOVERY_INDICATOR TYPE STRING,
NEW_FUND TYPE STRING,
NEW_FUNCTIONAL_AREA TYPE STRING,
NEW_GRANT TYPE STRING,
BELNR_INTERN TYPE STRING,
ZLENR_INTERN TYPE STRING,
BUZEI_INTERN TYPE STRING,
SYSTEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UISS_S_CORRPOST_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_UISS_S_CORRPOST_STR-ITEMKEY sy-vline 
WA_UISS_S_CORRPOST_STR-CO_AREA sy-vline 
WA_UISS_S_CORRPOST_STR-DOCUMENT_NUMBER sy-vline 
WA_UISS_S_CORRPOST_STR-DOCUMENT_ITEM sy-vline 
WA_UISS_S_CORRPOST_STR-POSTING_ROW sy-vline 
WA_UISS_S_CORRPOST_STR-POSTINGDATE sy-vline 
WA_UISS_S_CORRPOST_STR-COSTELEMENT sy-vline 
WA_UISS_S_CORRPOST_STR-CURRENCY sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_AMOUNT sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_QUANTITY sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_UNIT sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_TEXT sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_COSTCENTER sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_ORDER sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_WBSELEMENT sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_SALESORDER sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_SALESORDER_ITEM sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_COSTOBJECT sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_NETWORK sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_NETWORK_ACTIVITY sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_BUSINESS_PROCESS sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_ACC_INDICATOR sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_RECOVERY_INDICATOR sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_FUND sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_FUNCTIONAL_AREA sy-vline 
WA_UISS_S_CORRPOST_STR-OLD_GRANT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_AMOUNT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_QUANTITY sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_UNIT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_TEXT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_COSTCENTER sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_ORDER sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_WBSELEMENT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_SALESORDER sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_SALESORDER_ITEM sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_COSTOBJECT sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_NETWORK sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_NETWORK_ACTIVITY sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_BUSINESS_PROCESS sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_ACC_INDICATOR sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_RECOVERY_INDICATOR sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_FUND sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_FUNCTIONAL_AREA sy-vline 
WA_UISS_S_CORRPOST_STR-NEW_GRANT sy-vline 
WA_UISS_S_CORRPOST_STR-BELNR_INTERN sy-vline 
WA_UISS_S_CORRPOST_STR-ZLENR_INTERN sy-vline 
WA_UISS_S_CORRPOST_STR-BUZEI_INTERN sy-vline 
WA_UISS_S_CORRPOST_STR-SYSTEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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