ABAP Select data from SAP table ISSUE_S_ATTRIB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSUE_S_ATTRIB
*  INTO TABLE @DATA(IT_ISSUE_S_ATTRIB2).
*--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_ISSUE_S_ATTRIB INDEX 1 INTO DATA(WA_ISSUE_S_ATTRIB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSUE_S_ATTRIB>-STATUS_ID = 1.
<ISSUE_S_ATTRIB>-MSG_KEY = 1.
<ISSUE_S_ATTRIB>-MSG_TYPE = 1.
<ISSUE_S_ATTRIB>-MSG_STAT = 1.
<ISSUE_S_ATTRIB>-MSG_PRIO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSUE_S_ATTRIB-MSG_COMP, sy-vline,
  WA_ISSUE_S_ATTRIB-MSG_CATEG, sy-vline,
  WA_ISSUE_S_ATTRIB-MSG_STXT, sy-vline,
  WA_ISSUE_S_ATTRIB-MSG_FUSER, sy-vline,
  WA_ISSUE_S_ATTRIB-MSG_FTSTMP, sy-vline,
  WA_ISSUE_S_ATTRIB-MSG_LUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSUE_S_ATTRIB 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_ISSUE_S_ATTRIB 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_ISSUE_S_ATTRIB INTO WA_ISSUE_S_ATTRIB.


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

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

*Conversion exit TSTPS, internal->external for field MSG_RTSTMP
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_ISSUE_S_ATTRIB-MSG_RTSTMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSUE_S_ATTRIB-MSG_RTSTMP.
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_ISSUE_S_ATTRIB_STR, 
STATUS_ID TYPE STRING,
MSG_KEY TYPE STRING,
MSG_TYPE TYPE STRING,
MSG_STAT TYPE STRING,
MSG_PRIO TYPE STRING,
MSG_COMP TYPE STRING,
MSG_CATEG TYPE STRING,
MSG_STXT TYPE STRING,
MSG_FUSER TYPE STRING,
MSG_FTSTMP TYPE STRING,
MSG_LUSER TYPE STRING,
MSG_LTSTMP TYPE STRING,
MSG_PROC TYPE STRING,
TC_NAME TYPE STRING,
TC_NODE_T TYPE STRING,
TC_VARIANT TYPE STRING,
TC_DEST TYPE STRING,
TC_REF_TYPE TYPE STRING,
TC_REF_OBJECT TYPE STRING,
MSG_FUSER_FNAME TYPE STRING,
MSG_LUSER_FNAME TYPE STRING,
MSG_PROC_FNAME TYPE STRING,
MSG_RTSTMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSUE_S_ATTRIB_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_ISSUE_S_ATTRIB_STR-STATUS_ID sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_KEY sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_TYPE sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_STAT sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_PRIO sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_COMP sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_CATEG sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_STXT sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_FUSER sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_FTSTMP sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_LUSER sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_LTSTMP sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_PROC sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_NAME sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_NODE_T sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_VARIANT sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_DEST sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_REF_TYPE sy-vline 
WA_ISSUE_S_ATTRIB_STR-TC_REF_OBJECT sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_FUSER_FNAME sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_LUSER_FNAME sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_PROC_FNAME sy-vline 
WA_ISSUE_S_ATTRIB_STR-MSG_RTSTMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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