ABAP Select data from SAP table /SCWM/S_PI_ITEM_HEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_PI_ITEM_HEAD 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 /SCWM/S_PI_ITEM_HEAD. 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 /SCWM/S_PI_ITEM_HEAD 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_/SCWM/S_PI_ITEM_HEAD TYPE STANDARD TABLE OF /SCWM/S_PI_ITEM_HEAD,
      WA_/SCWM/S_PI_ITEM_HEAD TYPE /SCWM/S_PI_ITEM_HEAD,
      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: </SCWM/S_PI_ITEM_HEAD> TYPE /SCWM/S_PI_ITEM_HEAD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_PI_ITEM_HEAD
  INTO TABLE IT_/SCWM/S_PI_ITEM_HEAD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_PI_ITEM_HEAD
*  INTO TABLE @DATA(IT_/SCWM/S_PI_ITEM_HEAD2).
*--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_/SCWM/S_PI_ITEM_HEAD INDEX 1 INTO DATA(WA_/SCWM/S_PI_ITEM_HEAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_PI_ITEM_HEAD ASSIGNING </SCWM/S_PI_ITEM_HEAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_PI_ITEM_HEAD>-LGNUM = 1.
</SCWM/S_PI_ITEM_HEAD>-GUID_DOC = 1.
</SCWM/S_PI_ITEM_HEAD>-DOC_NUMBER = 1.
</SCWM/S_PI_ITEM_HEAD>-ITEM_NO = 1.
</SCWM/S_PI_ITEM_HEAD>-DOC_YEAR = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_PI_ITEM_HEAD INTO WA_/SCWM/S_PI_ITEM_HEAD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_PI_ITEM_HEAD-DOC_TYPE, sy-vline,
  WA_/SCWM/S_PI_ITEM_HEAD-DOC_STATUS, sy-vline,
  WA_/SCWM/S_PI_ITEM_HEAD-AAREA, sy-vline,
  WA_/SCWM/S_PI_ITEM_HEAD-REASON, sy-vline,
  WA_/SCWM/S_PI_ITEM_HEAD-REASON_TXT, sy-vline,
  WA_/SCWM/S_PI_ITEM_HEAD-PRIORITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_PI_ITEM_HEAD 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_/SCWM/S_PI_ITEM_HEAD 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_/SCWM/S_PI_ITEM_HEAD INTO WA_/SCWM/S_PI_ITEM_HEAD.


*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 ALPH0, internal->external for field DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DOC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-DOC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-DOC_YEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CNTRF, internal->external for field COUNT_REFERENCE
CALL FUNCTION 'CONVERSION_EXIT_CNTRF_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-COUNT_REFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-COUNT_REFERENCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PROCR, internal->external for field COUNT_USER
CALL FUNCTION 'CONVERSION_EXIT_PROCR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-COUNT_USER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-COUNT_USER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPD, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-MATID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit BPMAP, internal->external for field OWNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-OWNER.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPH0, internal->external for field WHO
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-WHO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-WHO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field WHTASK
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-WHTASK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-WHTASK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field DOC_NUMBER_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-DOC_NUMBER_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-DOC_NUMBER_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DOC_YEAR_REF
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_PI_ITEM_HEAD-DOC_YEAR_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_PI_ITEM_HEAD-DOC_YEAR_REF.
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_/SCWM/S_PI_ITEM_HEAD_STR, 
LGNUM TYPE STRING,
GUID_DOC TYPE STRING,
DOC_NUMBER TYPE STRING,
ITEM_NO TYPE STRING,
DOC_YEAR TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_STATUS TYPE STRING,
AAREA TYPE STRING,
REASON TYPE STRING,
REASON_TXT TYPE STRING,
PRIORITY TYPE STRING,
PRIORITY_TXT TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
CREATED_BY TYPE STRING,
ACTI_DATE TYPE STRING,
ACTI_TIME TYPE STRING,
COUNT_DATE TYPE STRING,
COUNT_TIME TYPE STRING,
COUNT_REFERENCE TYPE STRING,
COUNT_USER TYPE STRING,
POST_DATE TYPE STRING,
POST_TIME TYPE STRING,
LAST_CHANGED_BY TYPE STRING,
BLOCK_IND TYPE STRING,
FREEZE_IND TYPE STRING,
IND_PRINTED TYPE STRING,
IND_BIN_EMPTY TYPE STRING,
IND_PRIL TYPE STRING,
LGTYP TYPE STRING,
LGBER TYPE STRING,
LGPLA TYPE STRING,
MATID TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
BATCHID TYPE STRING,
CHARG TYPE STRING,
CAT TYPE STRING,
CAT_TEXT TYPE STRING,
ENTITLED TYPE STRING,
ENTITLED_ROLE TYPE STRING,
ENTITLED_TEXT TYPE STRING,
OWNER TYPE STRING,
OWNER_ROLE TYPE STRING,
OWNER_TEXT TYPE STRING,
STOCK_DOCCAT TYPE STRING,
STOCK_DOCCAT_TEXT TYPE STRING,
STOCK_DOCNO TYPE STRING,
STOCK_DOCNO_EXT TYPE STRING,
STOCK_ITMNO TYPE STRING,
STOCK_USAGE TYPE STRING,
STOCK_USAGE_TEXT TYPE STRING,
STREF_DOCCAT TYPE STRING,
STREF_DOCCAT_TEXT TYPE STRING,
WDATU TYPE STRING,
UI_WDATU TYPE STRING,
UI_WDATT TYPE STRING,
VFDAT TYPE STRING,
COO TYPE STRING,
COO_TEXT TYPE STRING,
BRESTR TYPE STRING,
IDPLATE TYPE STRING,
QDOCCAT TYPE STRING,
QDOCCAT_TEXT TYPE STRING,
QDOCID TYPE STRING,
QITMID TYPE STRING,
QDOCNO TYPE STRING,
QITEMNO TYPE STRING,
INSPTYP TYPE STRING,
INSPTYP_TEXT TYPE STRING,
INSPID TYPE STRING,
INSPDOCNO TYPE STRING,
WHO TYPE STRING,
WHTASK TYPE STRING,
REF_NUMBER TYPE STRING,
DOC_NUMBER_REF TYPE STRING,
DOC_YEAR_REF TYPE STRING,
DOC_ITEM_NO_REF TYPE STRING,
EXCCODE1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_PI_ITEM_HEAD_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_/SCWM/S_PI_ITEM_HEAD_STR-LGNUM sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-GUID_DOC sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_NUMBER sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ITEM_NO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_YEAR sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_TYPE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_STATUS sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-AAREA sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-REASON sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-REASON_TXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-PRIORITY sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-PRIORITY_TXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CREATE_DATE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CREATE_TIME sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CREATED_BY sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ACTI_DATE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ACTI_TIME sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COUNT_DATE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COUNT_TIME sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COUNT_REFERENCE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COUNT_USER sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-POST_DATE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-POST_TIME sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-LAST_CHANGED_BY sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-BLOCK_IND sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-FREEZE_IND sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-IND_PRINTED sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-IND_BIN_EMPTY sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-IND_PRIL sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-LGTYP sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-LGBER sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-LGPLA sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-MATID sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-MATNR sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-MAKTX sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-BATCHID sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CHARG sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CAT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-CAT_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ENTITLED sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ENTITLED_ROLE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-ENTITLED_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-OWNER sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-OWNER_ROLE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-OWNER_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_DOCCAT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_DOCCAT_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_DOCNO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_DOCNO_EXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_ITMNO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_USAGE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STOCK_USAGE_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STREF_DOCCAT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-STREF_DOCCAT_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-WDATU sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-UI_WDATU sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-UI_WDATT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-VFDAT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-COO_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-BRESTR sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-IDPLATE sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QDOCCAT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QDOCCAT_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QDOCID sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QITMID sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QDOCNO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-QITEMNO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-INSPTYP sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-INSPTYP_TEXT sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-INSPID sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-INSPDOCNO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-WHO sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-WHTASK sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-REF_NUMBER sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_NUMBER_REF sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_YEAR_REF sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-DOC_ITEM_NO_REF sy-vline 
WA_/SCWM/S_PI_ITEM_HEAD_STR-EXCCODE1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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