ABAP Select data from SAP table CRM_ISU_PROD_MAINTAIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRM_ISU_PROD_MAINTAIN
*  INTO TABLE @DATA(IT_CRM_ISU_PROD_MAINTAIN2).
*--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_CRM_ISU_PROD_MAINTAIN INDEX 1 INTO DATA(WA_CRM_ISU_PROD_MAINTAIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRM_ISU_PROD_MAINTAIN>-RELATION = 1.
<CRM_ISU_PROD_MAINTAIN>-CLIENT = 1.
<CRM_ISU_PROD_MAINTAIN>-PRODUCT_GUID = 1.
<CRM_ISU_PROD_MAINTAIN>-FRAGMENT_TYPE = 1.
<CRM_ISU_PROD_MAINTAIN>-ORDER_GUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRM_ISU_PROD_MAINTAIN-FRAGMENT_GUID, sy-vline,
  WA_CRM_ISU_PROD_MAINTAIN-OWNER, sy-vline,
  WA_CRM_ISU_PROD_MAINTAIN-STATUS_OBJECT, sy-vline,
  WA_CRM_ISU_PROD_MAINTAIN-VALID_FROM, sy-vline,
  WA_CRM_ISU_PROD_MAINTAIN-VALID_TO, sy-vline,
  WA_CRM_ISU_PROD_MAINTAIN-UPNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRM_ISU_PROD_MAINTAIN 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_CRM_ISU_PROD_MAINTAIN 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_CRM_ISU_PROD_MAINTAIN INTO WA_CRM_ISU_PROD_MAINTAIN.


*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 ORDER, internal->external for field ORDER_GUID
CALL FUNCTION 'CONVERSION_EXIT_ORDER_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_PROD_MAINTAIN-ORDER_GUID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_PROD_MAINTAIN-ORDER_GUID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_ISU_PROD_MAINTAIN-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_ISU_PROD_MAINTAIN-LOGSYS.
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_CRM_ISU_PROD_MAINTAIN_STR, 
RELATION TYPE STRING,
CLIENT TYPE STRING,
PRODUCT_GUID TYPE STRING,
FRAGMENT_TYPE TYPE STRING,
ORDER_GUID TYPE STRING,
FRAGMENT_GUID TYPE STRING,
OWNER TYPE STRING,
STATUS_OBJECT TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
UPNAME TYPE STRING,
HISTEX TYPE STRING,
LOGSYS TYPE STRING,
DATA TYPE STRING,
CLIENT TYPE STRING,
FRG_GUID TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
UPNAME TYPE STRING,
HISTEX TYPE STRING,
LOGSYS TYPE STRING,
FF0010 TYPE STRING,
FF0011 TYPE STRING,
FF0012 TYPE STRING,
FF0013 TYPE STRING,
FF0014 TYPE STRING,
FF0015 TYPE STRING,
FF0016 TYPE STRING,
FF0017 TYPE STRING,
FF0018 TYPE STRING,
FF0019 TYPE STRING,
FF0020 TYPE STRING,
FF0021 TYPE STRING,
DATA_X TYPE STRING,
FF0010 TYPE STRING,
FF0011 TYPE STRING,
FF0012 TYPE STRING,
FF0013 TYPE STRING,
FF0014 TYPE STRING,
FF0015 TYPE STRING,
FF0016 TYPE STRING,
FF0017 TYPE STRING,
FF0018 TYPE STRING,
FF0019 TYPE STRING,
FF0020 TYPE STRING,
FF0021 TYPE STRING,
STATUS TYPE STRING,
UPDATE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRM_ISU_PROD_MAINTAIN_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_CRM_ISU_PROD_MAINTAIN_STR-RELATION sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-CLIENT sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-PRODUCT_GUID sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FRAGMENT_TYPE sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-ORDER_GUID sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FRAGMENT_GUID sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-OWNER sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-STATUS_OBJECT sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-VALID_FROM sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-VALID_TO sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-UPNAME sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-HISTEX sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-LOGSYS sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-DATA sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-CLIENT sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FRG_GUID sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-VALID_FROM sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-VALID_TO sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-UPNAME sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-HISTEX sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-LOGSYS sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0010 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0011 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0012 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0013 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0014 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0015 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0016 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0017 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0018 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0019 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0020 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0021 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-DATA_X sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0010 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0011 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0012 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0013 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0014 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0015 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0016 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0017 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0018 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0019 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0020 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-FF0021 sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-STATUS sy-vline 
WA_CRM_ISU_PROD_MAINTAIN_STR-UPDATE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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