ABAP Select data from SAP table ISRELEASESTRATEGYCHARCLASSTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISRELEASESTRATEGYCHARCLASSTP
*  INTO TABLE @DATA(IT_ISRELEASESTRATEGYCHARCLASSTP2).
*--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_ISRELEASESTRATEGYCHARCLASSTP INDEX 1 INTO DATA(WA_ISRELEASESTRATEGYCHARCLASSTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISRELEASESTRATEGYCHARCLASSTP>-KEY = 1.
<ISRELEASESTRATEGYCHARCLASSTP>-PARENT_KEY = 1.
<ISRELEASESTRATEGYCHARCLASSTP>-ROOT_KEY = 1.
<ISRELEASESTRATEGYCHARCLASSTP>-INTERNALCLASSNUMBERFOREDIT = 1.
<ISRELEASESTRATEGYCHARCLASSTP>-CHARCINTIDFOREDIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISRELEASESTRATEGYCHARCLASSTP-CHARCVALINTIDFOREDIT, sy-vline,
  WA_ISRELEASESTRATEGYCHARCLASSTP-CLKEYWRDPOSNMBRFOREDIT, sy-vline,
  WA_ISRELEASESTRATEGYCHARCLASSTP-ARCHIVINGOBJECTFOREDIT, sy-vline,
  WA_ISRELEASESTRATEGYCHARCLASSTP-DATABASETABLE, sy-vline,
  WA_ISRELEASESTRATEGYCHARCLASSTP-DATABASETABLEFIELDNAME, sy-vline,
  WA_ISRELEASESTRATEGYCHARCLASSTP-VALIDFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISRELEASESTRATEGYCHARCLASSTP 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_ISRELEASESTRATEGYCHARCLASSTP 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_ISRELEASESTRATEGYCHARCLASSTP INTO WA_ISRELEASESTRATEGYCHARCLASSTP.


*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 ATINN, internal->external for field CHARCINTIDFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ISRELEASESTRATEGYCHARCLASSTP-CHARCINTIDFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRELEASESTRATEGYCHARCLASSTP-CHARCINTIDFOREDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field CHARCVALINTIDFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ISRELEASESTRATEGYCHARCLASSTP-CHARCVALINTIDFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRELEASESTRATEGYCHARCLASSTP-CHARCVALINTIDFOREDIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field CHARACTERISTICINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ISRELEASESTRATEGYCHARCLASSTP-CHARACTERISTICINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRELEASESTRATEGYCHARCLASSTP-CHARACTERISTICINTERNALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field CHARACTERISTICVALUEINTERNALID
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ISRELEASESTRATEGYCHARCLASSTP-CHARACTERISTICVALUEINTERNALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISRELEASESTRATEGYCHARCLASSTP-CHARACTERISTICVALUEINTERNALID.
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_ISRELEASESTRATEGYCHARCLASSTP_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
INTERNALCLASSNUMBERFOREDIT TYPE STRING,
CHARCINTIDFOREDIT TYPE STRING,
CHARCVALINTIDFOREDIT TYPE STRING,
CLKEYWRDPOSNMBRFOREDIT TYPE STRING,
ARCHIVINGOBJECTFOREDIT TYPE STRING,
DATABASETABLE TYPE STRING,
DATABASETABLEFIELDNAME TYPE STRING,
VALIDFROM TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ORIGINALSTATUSTEXT TYPE STRING,
CHARACTERISTICINTERNALID TYPE STRING,
CHARACTERISTICVALUEINTERNALID TYPE STRING,
CHARACTERISTICDESCRIPTION TYPE STRING,
CHARACTERISTICVALUEDESCRIPTION TYPE STRING,
CLASSKEYWORDPOSITIONNUMBER TYPE STRING,
INTERNALCLASSNUMBER TYPE STRING,
ARCHIVINGOBJECT TYPE STRING,
HASACTIVEENTITY TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISRELEASESTRATEGYCHARCLASSTP_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_ISRELEASESTRATEGYCHARCLASSTP_STR-KEY sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-PARENT_KEY sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-ROOT_KEY sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-INTERNALCLASSNUMBERFOREDIT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARCINTIDFOREDIT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARCVALINTIDFOREDIT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CLKEYWRDPOSNMBRFOREDIT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-ARCHIVINGOBJECTFOREDIT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-DATABASETABLE sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-DATABASETABLEFIELDNAME sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-VALIDFROM sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CREATEDBYUSER sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-LASTCHANGEDBYUSER sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-ORIGINALSTATUSTEXT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARACTERISTICINTERNALID sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARACTERISTICVALUEINTERNALID sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARACTERISTICDESCRIPTION sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CHARACTERISTICVALUEDESCRIPTION sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-CLASSKEYWORDPOSITIONNUMBER sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-INTERNALCLASSNUMBER sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-ARCHIVINGOBJECT sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-HASACTIVEENTITY sy-vline 
WA_ISRELEASESTRATEGYCHARCLASSTP_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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