ABAP Select data from SAP table IALIGNPOHITMSCHE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IALIGNPOHITMSCHE
*  INTO TABLE @DATA(IT_IALIGNPOHITMSCHE2).
*--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_IALIGNPOHITMSCHE INDEX 1 INTO DATA(WA_IALIGNPOHITMSCHE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IALIGNPOHITMSCHE>-MANDT = 1.
<IALIGNPOHITMSCHE>-PURCHASINGDOCUMENT = 1.
<IALIGNPOHITMSCHE>-PURCHASINGDOCUMENTITEM = 1.
<IALIGNPOHITMSCHE>-SCHEDULELINE = 1.
<IALIGNPOHITMSCHE>-PURCHASINGDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IALIGNPOHITMSCHE-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_IALIGNPOHITMSCHE-PURCHASEORDERSUPPLIER, sy-vline,
  WA_IALIGNPOHITMSCHE-PURORDPURCHASINGORGANIZATION, sy-vline,
  WA_IALIGNPOHITMSCHE-PURCHASINGGROUP, sy-vline,
  WA_IALIGNPOHITMSCHE-COMPANYCODE, sy-vline,
  WA_IALIGNPOHITMSCHE-PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IALIGNPOHITMSCHE 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_IALIGNPOHITMSCHE 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_IALIGNPOHITMSCHE INTO WA_IALIGNPOHITMSCHE.


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

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

*Conversion exit MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IALIGNPOHITMSCHE-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IALIGNPOHITMSCHE-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PURORDERITEMPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IALIGNPOHITMSCHE-PURORDERITEMPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IALIGNPOHITMSCHE-PURORDERITEMPURCHASECONTRACT.
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_IALIGNPOHITMSCHE_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASEORDERSUPPLIER TYPE STRING,
PURORDPURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
PRODUCT TYPE STRING,
PURORDERITEMPLANT TYPE STRING,
MATERIALGROUP TYPE STRING,
BASEUNIT TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
PURORDERITEMPURCHASECONTRACT TYPE STRING,
PURORDERITEMPURCONTRACTITEM TYPE STRING,
ORDERITEMQTYTOBASEQTYNMRTR TYPE STRING,
ORDERITEMQTYTOBASEQTYDNMNTR TYPE STRING,
ORDERQUANTITYINBASEUNIT TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
PURCHASEORDERITEMSEASONYEAR TYPE STRING,
PURCHASEORDERITEMSEASON TYPE STRING,
PURCHASEORDERITEMCOLLECTION TYPE STRING,
PURCHASEORDERITEMTHEME TYPE STRING,
PURCHASEORDERITEMSTOCKSEGMENT TYPE STRING,
DIVERSIONSTATUS TYPE STRING,
PURORDITMPLNTCOCODECRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IALIGNPOHITMSCHE_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_IALIGNPOHITMSCHE_STR-MANDT sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASINGDOCUMENT sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_IALIGNPOHITMSCHE_STR-SCHEDULELINE sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERSUPPLIER sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURORDPURCHASINGORGANIZATION sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASINGGROUP sy-vline 
WA_IALIGNPOHITMSCHE_STR-COMPANYCODE sy-vline 
WA_IALIGNPOHITMSCHE_STR-PRODUCT sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURORDERITEMPLANT sy-vline 
WA_IALIGNPOHITMSCHE_STR-MATERIALGROUP sy-vline 
WA_IALIGNPOHITMSCHE_STR-BASEUNIT sy-vline 
WA_IALIGNPOHITMSCHE_STR-ORDERQUANTITYUNIT sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURORDERITEMPURCHASECONTRACT sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURORDERITEMPURCONTRACTITEM sy-vline 
WA_IALIGNPOHITMSCHE_STR-ORDERITEMQTYTOBASEQTYNMRTR sy-vline 
WA_IALIGNPOHITMSCHE_STR-ORDERITEMQTYTOBASEQTYDNMNTR sy-vline 
WA_IALIGNPOHITMSCHE_STR-ORDERQUANTITYINBASEUNIT sy-vline 
WA_IALIGNPOHITMSCHE_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERITEMSEASONYEAR sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERITEMSEASON sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERITEMCOLLECTION sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERITEMTHEME sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURCHASEORDERITEMSTOCKSEGMENT sy-vline 
WA_IALIGNPOHITMSCHE_STR-DIVERSIONSTATUS sy-vline 
WA_IALIGNPOHITMSCHE_STR-PURORDITMPLNTCOCODECRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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