ABAP Select data from SAP table ECOD_LOG_CLASS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECOD_LOG_CLASS
*  INTO TABLE @DATA(IT_ECOD_LOG_CLASS2).
*--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_ECOD_LOG_CLASS INDEX 1 INTO DATA(WA_ECOD_LOG_CLASS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECOD_LOG_CLASS>-LOGID = 1.
<ECOD_LOG_CLASS>-TESTCLASS = 1.
<ECOD_LOG_CLASS>-ENTITY_SET = 1.
<ECOD_LOG_CLASS>-AUNITCLASS = 1.
<ECOD_LOG_CLASS>-SERVICECLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECOD_LOG_CLASS-EXEC_TIMESTAMP, sy-vline,
  WA_ECOD_LOG_CLASS-EXEC_DATE, sy-vline,
  WA_ECOD_LOG_CLASS-EXEC_TIME, sy-vline,
  WA_ECOD_LOG_CLASS-UPDA_TIMESTAMP, sy-vline,
  WA_ECOD_LOG_CLASS-UPDA_DATE, sy-vline,
  WA_ECOD_LOG_CLASS-UPDA_TIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECOD_LOG_CLASS 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_ECOD_LOG_CLASS 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_ECOD_LOG_CLASS INTO WA_ECOD_LOG_CLASS.


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

*Conversion exit SXIDN, internal->external for field RESPONSIBLE_EMAIL_SI
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_ECOD_LOG_CLASS-RESPONSIBLE_EMAIL_SI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECOD_LOG_CLASS-RESPONSIBLE_EMAIL_SI.
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_ECOD_LOG_CLASS_STR, 
LOGID TYPE STRING,
TESTCLASS TYPE STRING,
ENTITY_SET TYPE STRING,
AUNITCLASS TYPE STRING,
SERVICECLASS TYPE STRING,
EXEC_TIMESTAMP TYPE STRING,
EXEC_DATE TYPE STRING,
EXEC_TIME TYPE STRING,
UPDA_TIMESTAMP TYPE STRING,
UPDA_DATE TYPE STRING,
UPDA_TIME TYPE STRING,
STATUS TYPE STRING,
SRV_IDENTIFIER_SI TYPE STRING,
IS_ACTIVE_SI TYPE STRING,
SRV_TECH_NAME_SI TYPE STRING,
SRV_TECH_VERSION_SI TYPE STRING,
SRV_EXT_NAME_SI TYPE STRING,
SRV_NAMESPACE_SI TYPE STRING,
LANGUAGE_SI TYPE STRING,
DESCRIPTION_SI TYPE STRING,
CLASSNAME_SI TYPE STRING,
DEVC_PACKAGE_SI TYPE STRING,
SUPER_DEVC_PACKAGE_SI TYPE STRING,
TRANSPORT_LAYER_SI TYPE STRING,
SOFT_COMP_SI TYPE STRING,
APPL_COMP_SI TYPE STRING,
RESPONSIBLE_SI TYPE STRING,
RESPONSIBLE_EMAIL_SI TYPE STRING,
ACCOUNT_SI TYPE STRING,
CHECK_MESSAGE_SI TYPE STRING,
SERVICE_VERSION_SI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECOD_LOG_CLASS_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_ECOD_LOG_CLASS_STR-LOGID sy-vline 
WA_ECOD_LOG_CLASS_STR-TESTCLASS sy-vline 
WA_ECOD_LOG_CLASS_STR-ENTITY_SET sy-vline 
WA_ECOD_LOG_CLASS_STR-AUNITCLASS sy-vline 
WA_ECOD_LOG_CLASS_STR-SERVICECLASS sy-vline 
WA_ECOD_LOG_CLASS_STR-EXEC_TIMESTAMP sy-vline 
WA_ECOD_LOG_CLASS_STR-EXEC_DATE sy-vline 
WA_ECOD_LOG_CLASS_STR-EXEC_TIME sy-vline 
WA_ECOD_LOG_CLASS_STR-UPDA_TIMESTAMP sy-vline 
WA_ECOD_LOG_CLASS_STR-UPDA_DATE sy-vline 
WA_ECOD_LOG_CLASS_STR-UPDA_TIME sy-vline 
WA_ECOD_LOG_CLASS_STR-STATUS sy-vline 
WA_ECOD_LOG_CLASS_STR-SRV_IDENTIFIER_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-IS_ACTIVE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SRV_TECH_NAME_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SRV_TECH_VERSION_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SRV_EXT_NAME_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SRV_NAMESPACE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-LANGUAGE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-DESCRIPTION_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-CLASSNAME_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-DEVC_PACKAGE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SUPER_DEVC_PACKAGE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-TRANSPORT_LAYER_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SOFT_COMP_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-APPL_COMP_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-RESPONSIBLE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-RESPONSIBLE_EMAIL_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-ACCOUNT_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-CHECK_MESSAGE_SI sy-vline 
WA_ECOD_LOG_CLASS_STR-SERVICE_VERSION_SI sy-vline      INTO ld_text SEPARATED BY SPACE.

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