ABAP Select data from SAP table IPAIEPMPOIDEMO_1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPAIEPMPOIDEMO_1 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 IPAIEPMPOIDEMO_1. 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 IPAIEPMPOIDEMO_1 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_IPAIEPMPOIDEMO_1 TYPE STANDARD TABLE OF IPAIEPMPOIDEMO_1,
      WA_IPAIEPMPOIDEMO_1 TYPE IPAIEPMPOIDEMO_1,
      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: <IPAIEPMPOIDEMO_1> TYPE IPAIEPMPOIDEMO_1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IPAIEPMPOIDEMO_1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IPAIEPMPOIDEMO_1
  INTO TABLE IT_IPAIEPMPOIDEMO_1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPAIEPMPOIDEMO_1
*  INTO TABLE @DATA(IT_IPAIEPMPOIDEMO_12).
*--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_IPAIEPMPOIDEMO_1 INDEX 1 INTO DATA(WA_IPAIEPMPOIDEMO_12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IPAIEPMPOIDEMO_1 ASSIGNING <IPAIEPMPOIDEMO_1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPAIEPMPOIDEMO_1>-MANDT = 1.
<IPAIEPMPOIDEMO_1>-PURCHASEORDER = 1.
<IPAIEPMPOIDEMO_1>-PURCHASEORDERITEM = 1.
<IPAIEPMPOIDEMO_1>-PRODUCT = 1.
<IPAIEPMPOIDEMO_1>-GROSSAMTINTRANSACTIONCURR = 1.

ENDLOOP.

LOOP AT IT_IPAIEPMPOIDEMO_1 INTO WA_IPAIEPMPOIDEMO_1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPAIEPMPOIDEMO_1-NETAMTINTRANSACTIONCURR, sy-vline,
  WA_IPAIEPMPOIDEMO_1-TRANSACTIONCURRENCY, sy-vline,
  WA_IPAIEPMPOIDEMO_1-QUANTITY, sy-vline,
  WA_IPAIEPMPOIDEMO_1-QUANTITYUNIT, sy-vline,
  WA_IPAIEPMPOIDEMO_1-DELIVERYDATETIME, sy-vline,
  WA_IPAIEPMPOIDEMO_1-DELIVERYTIMESTAMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPAIEPMPOIDEMO_1 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_IPAIEPMPOIDEMO_1 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_IPAIEPMPOIDEMO_1 INTO WA_IPAIEPMPOIDEMO_1.


*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 PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPAIEPMPOIDEMO_1-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPAIEPMPOIDEMO_1-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASEORDERITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPAIEPMPOIDEMO_1-PURCHASEORDERITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPAIEPMPOIDEMO_1-PURCHASEORDERITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPAIEPMPOIDEMO_1-QUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPAIEPMPOIDEMO_1-QUANTITYUNIT.
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_IPAIEPMPOIDEMO_1_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PRODUCT TYPE STRING,
GROSSAMTINTRANSACTIONCURR TYPE STRING,
NETAMTINTRANSACTIONCURR TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
QUANTITY TYPE STRING,
QUANTITYUNIT TYPE STRING,
DELIVERYDATETIME TYPE STRING,
DELIVERYTIMESTAMP TYPE STRING,
DELIVERYDATS TYPE STRING,
DELIVERYTIMS TYPE STRING,
DELIVERYDATETIMECHAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPAIEPMPOIDEMO_1_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_IPAIEPMPOIDEMO_1_STR-MANDT sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-PURCHASEORDER sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-PURCHASEORDERITEM sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-PRODUCT sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-GROSSAMTINTRANSACTIONCURR sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-NETAMTINTRANSACTIONCURR sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-TRANSACTIONCURRENCY sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-QUANTITY sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-QUANTITYUNIT sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-DELIVERYDATETIME sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-DELIVERYTIMESTAMP sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-DELIVERYDATS sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-DELIVERYTIMS sy-vline 
WA_IPAIEPMPOIDEMO_1_STR-DELIVERYDATETIMECHAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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