ABAP Select data from SAP table CRMT_LASTN_ACTIVITY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMT_LASTN_ACTIVITY 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_LASTN_ACTIVITY. 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_LASTN_ACTIVITY 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_LASTN_ACTIVITY TYPE STANDARD TABLE OF CRMT_LASTN_ACTIVITY,
      WA_CRMT_LASTN_ACTIVITY TYPE CRMT_LASTN_ACTIVITY,
      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_LASTN_ACTIVITY> TYPE CRMT_LASTN_ACTIVITY.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_LASTN_ACTIVITY
*  INTO TABLE @DATA(IT_CRMT_LASTN_ACTIVITY2).
*--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_LASTN_ACTIVITY INDEX 1 INTO DATA(WA_CRMT_LASTN_ACTIVITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_LASTN_ACTIVITY>-CLIENT = 1.
<CRMT_LASTN_ACTIVITY>-GUID = 1.
<CRMT_LASTN_ACTIVITY>-OBJECT_ID = 1.
<CRMT_LASTN_ACTIVITY>-PROCESS_TYPE = 1.
<CRMT_LASTN_ACTIVITY>-POSTING_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_LASTN_ACTIVITY-DESCRIPTION, sy-vline,
  WA_CRMT_LASTN_ACTIVITY-DESCR_LANGUAGE, sy-vline,
  WA_CRMT_LASTN_ACTIVITY-OBJECT_TYPE, sy-vline,
  WA_CRMT_LASTN_ACTIVITY-CREATED_AT, sy-vline,
  WA_CRMT_LASTN_ACTIVITY-CREATED_BY, sy-vline,
  WA_CRMT_LASTN_ACTIVITY-CHANGED_AT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_LASTN_ACTIVITY 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_LASTN_ACTIVITY 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_LASTN_ACTIVITY INTO WA_CRMT_LASTN_ACTIVITY.


*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_LASTN_ACTIVITY-OBJECT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LASTN_ACTIVITY-OBJECT_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field DESCR_LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LASTN_ACTIVITY-DESCR_LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LASTN_ACTIVITY-DESCR_LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit TSTPS, internal->external for field ACTUAL_TS_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_LASTN_ACTIVITY-ACTUAL_TS_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_LASTN_ACTIVITY-ACTUAL_TS_TO.
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_LASTN_ACTIVITY_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
OBJECT_ID TYPE STRING,
PROCESS_TYPE TYPE STRING,
POSTING_DATE TYPE STRING,
DESCRIPTION TYPE STRING,
DESCR_LANGUAGE TYPE STRING,
OBJECT_TYPE TYPE STRING,
CREATED_AT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CATEGORY TYPE STRING,
PRIORITY TYPE STRING,
OBJECTIVE TYPE STRING,
DIRECTION TYPE STRING,
COMPLETION TYPE STRING,
SALES_EMPLOYEE TYPE STRING,
PERSON_RESP TYPE STRING,
CONTACT_PERSON TYPE STRING,
ACTIVITY_PARTNER TYPE STRING,
REQUESTED_DATE TYPE STRING,
CONFIRMED_DATE TYPE STRING,
BEGIN_DATE TYPE STRING,
ENDING_DATE TYPE STRING,
START_OF_BILLING TYPE STRING,
PLANNED_TS_FROM TYPE STRING,
PLANNED_TS_TO TYPE STRING,
ACTUAL_TS_FROM TYPE STRING,
ACTUAL_TS_TO TYPE STRING,
PLANNED_FROM TYPE STRING,
PLANNED_TO TYPE STRING,
ACTUAL_FROM TYPE STRING,
ACTUAL_TO TYPE STRING,
ACTIVITY_DATE TYPE STRING,
ACTIVITY_TIME TYPE STRING,
FTF_DURATION TYPE STRING,
DURATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_LASTN_ACTIVITY_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_LASTN_ACTIVITY_STR-CLIENT sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-GUID sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-OBJECT_ID sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PROCESS_TYPE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-POSTING_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-DESCRIPTION sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-DESCR_LANGUAGE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-OBJECT_TYPE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CREATED_AT sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CREATED_BY sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CHANGED_AT sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CHANGED_BY sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CATEGORY sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PRIORITY sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-OBJECTIVE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-DIRECTION sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-COMPLETION sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-SALES_EMPLOYEE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PERSON_RESP sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CONTACT_PERSON sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTIVITY_PARTNER sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-REQUESTED_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-CONFIRMED_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-BEGIN_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ENDING_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-START_OF_BILLING sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PLANNED_TS_FROM sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PLANNED_TS_TO sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTUAL_TS_FROM sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTUAL_TS_TO sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PLANNED_FROM sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-PLANNED_TO sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTUAL_FROM sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTUAL_TO sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTIVITY_DATE sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-ACTIVITY_TIME sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-FTF_DURATION sy-vline 
WA_CRMT_LASTN_ACTIVITY_STR-DURATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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