ABAP Select data from SAP table ESHACTIVITYTYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESHACTIVITYTYPE
*  INTO TABLE @DATA(IT_ESHACTIVITYTYPE2).
*--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_ESHACTIVITYTYPE INDEX 1 INTO DATA(WA_ESHACTIVITYTYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESHACTIVITYTYPE>-MANDT = 1.
<ESHACTIVITYTYPE>-CONTROLLINGAREA = 1.
<ESHACTIVITYTYPE>-COSTCTRACTIVITYTYPE = 1.
<ESHACTIVITYTYPE>-VALIDITYENDDATE = 1.
<ESHACTIVITYTYPE>-VALIDITYSTARTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPENAME, sy-vline,
  WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPEDESC, sy-vline,
  WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPEQTYUNIT, sy-vline,
  WA_ESHACTIVITYTYPE-UNITOFMEASURENAME, sy-vline,
  WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPEVALIDCAT, sy-vline,
  WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESHACTIVITYTYPE 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_ESHACTIVITYTYPE 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_ESHACTIVITYTYPE INTO WA_ESHACTIVITYTYPE.


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

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

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

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

*Conversion exit CUNIT, internal->external for field COSTCTRACTIVITYTYPEOUTPQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPEOUTPQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESHACTIVITYTYPE-COSTCTRACTIVITYTYPEOUTPQTYUNIT.
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_ESHACTIVITYTYPE_STR, 
MANDT TYPE STRING,
CONTROLLINGAREA TYPE STRING,
COSTCTRACTIVITYTYPE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
COSTCTRACTIVITYTYPENAME TYPE STRING,
COSTCTRACTIVITYTYPEDESC TYPE STRING,
COSTCTRACTIVITYTYPEQTYUNIT TYPE STRING,
UNITOFMEASURENAME TYPE STRING,
COSTCTRACTIVITYTYPEVALIDCAT TYPE STRING,
COSTCTRACTIVITYTYPECATEGORY TYPE STRING,
COSTCTRACTIVITYTYPECATNAME TYPE STRING,
ALLOCATIONCOSTELEMENT TYPE STRING,
COSTELEMENTNAME TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,
CREATIONDATE TYPE STRING,
ENTEREDBYUSER TYPE STRING,
FULLNAME TYPE STRING,
PRICEALLOCATIONMETHOD TYPE STRING,
ACTUALPRICEALLOCATIONMETHOD TYPE STRING,
ACTIVITYTYPEISBLOCKED TYPE STRING,
ACTIVITYTYPEISBLOCKEDNAME TYPE STRING,
COSTCTRACTIVITYTYPEOUTPQTYUNIT TYPE STRING,
COSTCTRACTYTYPEOUTPQTYUNITNAME TYPE STRING,
OUTPUTQUANTITYFACTOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESHACTIVITYTYPE_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_ESHACTIVITYTYPE_STR-MANDT sy-vline 
WA_ESHACTIVITYTYPE_STR-CONTROLLINGAREA sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPE sy-vline 
WA_ESHACTIVITYTYPE_STR-VALIDITYENDDATE sy-vline 
WA_ESHACTIVITYTYPE_STR-VALIDITYSTARTDATE sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPENAME sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPEDESC sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPEQTYUNIT sy-vline 
WA_ESHACTIVITYTYPE_STR-UNITOFMEASURENAME sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPEVALIDCAT sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPECATEGORY sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPECATNAME sy-vline 
WA_ESHACTIVITYTYPE_STR-ALLOCATIONCOSTELEMENT sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTELEMENTNAME sy-vline 
WA_ESHACTIVITYTYPE_STR-CHARTOFACCOUNTS sy-vline 
WA_ESHACTIVITYTYPE_STR-CREATIONDATE sy-vline 
WA_ESHACTIVITYTYPE_STR-ENTEREDBYUSER sy-vline 
WA_ESHACTIVITYTYPE_STR-FULLNAME sy-vline 
WA_ESHACTIVITYTYPE_STR-PRICEALLOCATIONMETHOD sy-vline 
WA_ESHACTIVITYTYPE_STR-ACTUALPRICEALLOCATIONMETHOD sy-vline 
WA_ESHACTIVITYTYPE_STR-ACTIVITYTYPEISBLOCKED sy-vline 
WA_ESHACTIVITYTYPE_STR-ACTIVITYTYPEISBLOCKEDNAME sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTIVITYTYPEOUTPQTYUNIT sy-vline 
WA_ESHACTIVITYTYPE_STR-COSTCTRACTYTYPEOUTPQTYUNITNAME sy-vline 
WA_ESHACTIVITYTYPE_STR-OUTPUTQUANTITYFACTOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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