ABAP Select data from SAP table ESH_U_PURCTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_PURCTR
*  INTO TABLE @DATA(IT_ESH_U_PURCTR2).
*--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_ESH_U_PURCTR INDEX 1 INTO DATA(WA_ESH_U_PURCTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_PURCTR>-MANDT = 1.
<ESH_U_PURCTR>-MATAUTHGRP = 1.
<ESH_U_PURCTR>-MATLTYPAUTHGRP = 1.
<ESH_U_PURCTR>-VENDAUTHGRP = 1.
<ESH_U_PURCTR>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_U_PURCTR-COMPANYCODENAME, sy-vline,
  WA_ESH_U_PURCTR-CONTRACTNETPRICEAMOUNT, sy-vline,
  WA_ESH_U_PURCTR-CREATEDBYUSER, sy-vline,
  WA_ESH_U_PURCTR-CREATIONDATE, sy-vline,
  WA_ESH_U_PURCTR-DOCUMENTCURRENCY, sy-vline,
  WA_ESH_U_PURCTR-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_U_PURCTR 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_ESH_U_PURCTR 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_ESH_U_PURCTR INTO WA_ESH_U_PURCTR.


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

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

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

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_PURCTR-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_PURCTR-SUPPLIER.
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_ESH_U_PURCTR_STR, 
MANDT TYPE STRING,
MATAUTHGRP TYPE STRING,
MATLTYPAUTHGRP TYPE STRING,
VENDAUTHGRP TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
CONTRACTNETPRICEAMOUNT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
CURRENCY TYPE STRING,
INCOTERMSCLASSIFICATIONNAME TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
MATERIAL TYPE STRING,
MATGRPAUTHGRP TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
MATERIALNAME TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
ORDERPRICEUNIT TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
SUPPLIERNAME TYPE STRING,
PAYMENTTERMS TYPE STRING,
PAYMENTTERMSNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
PURCHASECONTRACTITEMTEXT TYPE STRING,
PURCHASECONTRACTTARGETAMOUNT TYPE STRING,
PURCHASECONTRACTTYPE TYPE STRING,
DELETIONCODEHDR TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
SUPPLIER TYPE STRING,
VENDACCTGRP TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
TARGETAMOUNT TYPE STRING,
TARGETQUANTITY TYPE STRING,
USERNAME TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_PURCTR_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_ESH_U_PURCTR_STR-MANDT sy-vline 
WA_ESH_U_PURCTR_STR-MATAUTHGRP sy-vline 
WA_ESH_U_PURCTR_STR-MATLTYPAUTHGRP sy-vline 
WA_ESH_U_PURCTR_STR-VENDAUTHGRP sy-vline 
WA_ESH_U_PURCTR_STR-COMPANYCODE sy-vline 
WA_ESH_U_PURCTR_STR-COMPANYCODENAME sy-vline 
WA_ESH_U_PURCTR_STR-CONTRACTNETPRICEAMOUNT sy-vline 
WA_ESH_U_PURCTR_STR-CREATEDBYUSER sy-vline 
WA_ESH_U_PURCTR_STR-CREATIONDATE sy-vline 
WA_ESH_U_PURCTR_STR-DOCUMENTCURRENCY sy-vline 
WA_ESH_U_PURCTR_STR-CURRENCY sy-vline 
WA_ESH_U_PURCTR_STR-INCOTERMSCLASSIFICATIONNAME sy-vline 
WA_ESH_U_PURCTR_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_ESH_U_PURCTR_STR-MATERIAL sy-vline 
WA_ESH_U_PURCTR_STR-MATGRPAUTHGRP sy-vline 
WA_ESH_U_PURCTR_STR-MATERIALGROUP sy-vline 
WA_ESH_U_PURCTR_STR-MATERIALGROUPNAME sy-vline 
WA_ESH_U_PURCTR_STR-MATERIALNAME sy-vline 
WA_ESH_U_PURCTR_STR-NETPRICEQUANTITY sy-vline 
WA_ESH_U_PURCTR_STR-ORDERPRICEUNIT sy-vline 
WA_ESH_U_PURCTR_STR-ORDERQUANTITYUNIT sy-vline 
WA_ESH_U_PURCTR_STR-SUPPLIERNAME sy-vline 
WA_ESH_U_PURCTR_STR-PAYMENTTERMS sy-vline 
WA_ESH_U_PURCTR_STR-PAYMENTTERMSNAME sy-vline 
WA_ESH_U_PURCTR_STR-PLANT sy-vline 
WA_ESH_U_PURCTR_STR-PLANTNAME sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASECONTRACT sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASECONTRACTITEM sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASECONTRACTITEMTEXT sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASECONTRACTTARGETAMOUNT sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASECONTRACTTYPE sy-vline 
WA_ESH_U_PURCTR_STR-DELETIONCODEHDR sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGGROUP sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGGROUPNAME sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGORGANIZATION sy-vline 
WA_ESH_U_PURCTR_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_ESH_U_PURCTR_STR-SUPPLIER sy-vline 
WA_ESH_U_PURCTR_STR-VENDACCTGRP sy-vline 
WA_ESH_U_PURCTR_STR-SUPPLIERPHONENUMBER sy-vline 
WA_ESH_U_PURCTR_STR-TARGETAMOUNT sy-vline 
WA_ESH_U_PURCTR_STR-TARGETQUANTITY sy-vline 
WA_ESH_U_PURCTR_STR-USERNAME sy-vline 
WA_ESH_U_PURCTR_STR-VALIDITYENDDATE sy-vline 
WA_ESH_U_PURCTR_STR-VALIDITYSTARTDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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