ABAP Select data from SAP table CRMT_LOCA_STR_PURCH_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_LOCA_STR_PURCH_ITEM
*  INTO TABLE @DATA(IT_CRMT_LOCA_STR_PURCH_ITEM2).
*--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_CRMT_LOCA_STR_PURCH_ITEM INDEX 1 INTO DATA(WA_CRMT_LOCA_STR_PURCH_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_LOCA_STR_PURCH_ITEM>-OBJECT_ID = 1.
<CRMT_LOCA_STR_PURCH_ITEM>-PROCESS_TYPE = 1.
<CRMT_LOCA_STR_PURCH_ITEM>-PROCESS_TYPE_TXT = 1.
<CRMT_LOCA_STR_PURCH_ITEM>-CONCATSTAT = 1.
<CRMT_LOCA_STR_PURCH_ITEM>-CONCATSTATUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_LOCA_STR_PURCH_ITEM-NUMBER_INT, sy-vline,
  WA_CRMT_LOCA_STR_PURCH_ITEM-NUMBER_EXT, sy-vline,
  WA_CRMT_LOCA_STR_PURCH_ITEM-CHANGED_AT, sy-vline,
  WA_CRMT_LOCA_STR_PURCH_ITEM-CREATED_AT, sy-vline,
  WA_CRMT_LOCA_STR_PURCH_ITEM-CHANGED_AT_DATE, sy-vline,
  WA_CRMT_LOCA_STR_PURCH_ITEM-CREATED_AT_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_LOCA_STR_PURCH_ITEM 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_CRMT_LOCA_STR_PURCH_ITEM 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_CRMT_LOCA_STR_PURCH_ITEM INTO WA_CRMT_LOCA_STR_PURCH_ITEM.


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

*Conversion exit TSTPS, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LOCA_STR_PURCH_ITEM-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LOCA_STR_PURCH_ITEM-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LOCA_STR_PURCH_ITEM-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LOCA_STR_PURCH_ITEM-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field DATE_CONTSTART
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LOCA_STR_PURCH_ITEM-DATE_CONTSTART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LOCA_STR_PURCH_ITEM-DATE_CONTSTART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field DATE_CONTEND
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LOCA_STR_PURCH_ITEM-DATE_CONTEND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LOCA_STR_PURCH_ITEM-DATE_CONTEND.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field TARGET_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LOCA_STR_PURCH_ITEM-TARGET_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LOCA_STR_PURCH_ITEM-TARGET_UNIT.
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_CRMT_LOCA_STR_PURCH_ITEM_STR, 
OBJECT_ID TYPE STRING,
PROCESS_TYPE TYPE STRING,
PROCESS_TYPE_TXT TYPE STRING,
CONCATSTAT TYPE STRING,
CONCATSTATUSER TYPE STRING,
NUMBER_INT TYPE STRING,
NUMBER_EXT TYPE STRING,
CHANGED_AT TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_AT_DATE TYPE STRING,
CREATED_AT_DATE TYPE STRING,
CREATED_BY TYPE STRING,
DATE_CONTSTART TYPE STRING,
DATE_CONTEND TYPE STRING,
PRODUCT_ID TYPE STRING,
CATEGORY_ID TYPE STRING,
CATALOG_ID TYPE STRING,
CATALOG_ITEM TYPE STRING,
DESCRIPT_PARTNER_PUR TYPE STRING,
RELEASED_QUANTITY TYPE STRING,
RELEASED_UNIT TYPE STRING,
RELEASED_VALUE TYPE STRING,
RELEASED_CURRENCY TYPE STRING,
TARGET_QUANTITY TYPE STRING,
TARGET_UNIT TYPE STRING,
TARGET_VALUE TYPE STRING,
TARGET_CURRENCY TYPE STRING,
CUSTOMER_INT TYPE STRING,
CUSTOMER_EXT TYPE STRING,
CUSTOMER_I_DUMMY TYPE STRING,
SERV_I_DUMMY_PS TYPE STRING,
PSSP_I_DUMMY_PS TYPE STRING,
PSDP_I_DUMMY_PS TYPE STRING,
PSOA_I_DUMMY_PS TYPE STRING,
PREQ_I_DUMMY_PS TYPE STRING,
OPPT_I_DUMMY_PS TYPE STRING,
COMP_I_DUMMY_PS TYPE STRING,
MAGR_I_DUMMY_PS TYPE STRING,
REPA_I_DUMMY_PS TYPE STRING,
IUCT_I_DUMMY_PS TYPE STRING,
IUCP_I_DUMMY_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_LOCA_STR_PURCH_ITEM_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_CRMT_LOCA_STR_PURCH_ITEM_STR-OBJECT_ID sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PROCESS_TYPE sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PROCESS_TYPE_TXT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CONCATSTAT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CONCATSTATUSER sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-NUMBER_INT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-NUMBER_EXT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CHANGED_AT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CREATED_AT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CHANGED_AT_DATE sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CREATED_AT_DATE sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CREATED_BY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-DATE_CONTSTART sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-DATE_CONTEND sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PRODUCT_ID sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CATEGORY_ID sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CATALOG_ID sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CATALOG_ITEM sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-DESCRIPT_PARTNER_PUR sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-RELEASED_QUANTITY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-RELEASED_UNIT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-RELEASED_VALUE sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-RELEASED_CURRENCY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-TARGET_QUANTITY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-TARGET_UNIT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-TARGET_VALUE sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-TARGET_CURRENCY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CUSTOMER_INT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CUSTOMER_EXT sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-CUSTOMER_I_DUMMY sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-SERV_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PSSP_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PSDP_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PSOA_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-PREQ_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-OPPT_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-COMP_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-MAGR_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-REPA_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-IUCT_I_DUMMY_PS sy-vline 
WA_CRMT_LOCA_STR_PURCH_ITEM_STR-IUCP_I_DUMMY_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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