Answer / ahmed

field catalog is used to represent the field where to and how to appear in the list.

Answer / teknath bera

Field catalog containing descriptions of the list output
fields. You can use fields of the catalog to determine the
number format and column properties of the list to be
displayed.

The field catalog contains more than 60 fields, some of
which are only used internally. The field catalog is
defined in the Data Dictionary through table type
LVC_T_FCAT.

We can get field description by calling function module
REUSE_ALV_FIELDCATALOG_MERGE

Answer / lokesh

Field catalog is used to populate the list header .we can
change them as per ur requirement.
To prepare field catalog certain fields are
essential .They are :
Fieldname : Internal table field
tabname : Internal table name
seltext_m : Selection text in the field
ref_tabname : referrence table name.

Answer / guest

This is used to define the output display properties of
data to be output using alv.

Answer / andy

Hi buddies

You can get some more information about each individual field in field catalog from <a href="http://www.how2sap.com/blog/alv/using-reuse_alv_-function-modules-field-catalog-slis_t_fieldcat_alv/">Introduction to Field Catalog ( SLIS_T_FIELDCAT_ALV )</a>. For a complete reference on ALVs, you can try <a href="http://www.how2sap.com/blog/alv/working-with-sap-alv-how-to-start-programming-sap-alv/">SAP ALV Tutorial : SAP ALV programming techniques</a>.

Cheers
Andy

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correct all performance problem without changing any functionality REPORT z_assignment_01. DATA: gt_user TYPE TABLE OF usr02 WITH HEADER LINE, gt_user_role TYPE TABLE OF agr_users WITH HEADER LINE, ********** DO NOT CHANGE THIS SECTION ********** g_begintime TYPE i, g_endtime TYPE i, g_tottime TYPE i. DATA: BEGIN OF gt_output OCCURS 0, bname LIKE usr02-bname, name_text LIKE adrp-name_text, agr_name LIKE agr_users-agr_name, text LIKE agr_texts-text, role_count TYPE i, END OF gt_output. TYPE-POOLS: slis. START-OF-SELECTION. GET RUN TIME FIELD g_begintime. ********** END NO CHANGE ********** SELECT * INTO TABLE gt_user FROM usr02 WHERE class > 'E'. SELECT * INTO TABLE gt_user_role FROM agr_users FOR ALL ENTRIES IN gt_user WHERE uname = gt_user-bname. PERFORM combine_tables. PERFORM get_addl_data. ********** DO NOT CHANGE THIS SECTION ********** GET RUN TIME FIELD g_endtime. g_tottime = ( g_endtime / 1000000 ) - ( g_begintime / 1000000 ). MESSAGE s398(00) WITH g_tottime. PERFORM output. ********** END NO CHANGE ********** *&---------------------------------------------------------------------* *& Form combine_tables *&---------------------------------------------------------------------* * Combine user and role tables *----------------------------------------------------------------------* FORM combine_tables. DATA: ls_usr21 TYPE usr21, ls_adrp TYPE adrp, ls_texts TYPE agr_texts. LOOP AT gt_user. * Get user name SELECT * INTO ls_usr21 FROM usr21 WHERE bname = gt_user-bname. SELECT * INTO ls_adrp FROM adrp WHERE persnumber = ls_usr21-persnumber. gt_output-name_text = ls_adrp-name_text. ENDSELECT. ENDSELECT. LOOP AT gt_user_role WHERE uname = gt_user-bname. * Only process roles that are currently active CHECK gt_user_role-from_dat <= sy-datum AND gt_user_role-to_dat >= sy-datum. * Get role text SELECT * INTO ls_texts FROM agr_texts WHERE agr_name = gt_output-agr_name AND spras = sy-langu AND line = 0. gt_output-text = ls_texts-text. ENDSELECT. gt_output-bname = gt_user-bname. gt_output-agr_name = gt_user_role-agr_name. APPEND gt_output. ENDLOOP. ENDLOOP. ENDFORM. " combine_tables *&---------------------------------------------------------------------* *& Form get_addl_data *&---------------------------------------------------------------------* * Get extra fields *----------------------------------------------------------------------* FORM get_addl_data. DATA: l_count TYPE i. * Count number of roles per user SORT gt_user_role BY uname. LOOP AT gt_user_role. ADD 1 TO l_count. AT END OF uname. LOOP AT gt_output WHERE bname = gt_user_role-uname. gt_output-role_count = l_count. MODIFY gt_output. CLEAR l_count. ENDLOOP. ENDAT. ENDLOOP. ENDFORM. " get_addl_data *&---------------------------------------------------------------------* *& Form output *&---------------------------------------------------------------------* * Output report *----------------------------------------------------------------------* FORM output. DATA: lt_fieldcat TYPE slis_t_fieldcat_alv, ls_fieldcat TYPE slis_fieldcat_alv, l_repid LIKE sy-repid, ls_layout TYPE slis_layout_alv, ls_variant TYPE disvariant. l_repid = sy-repid. CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE' EXPORTING i_program_name = l_repid i_internal_tabname = 'GT_OUTPUT' i_inclname = l_repid CHANGING ct_fieldcat = lt_fieldcat EXCEPTIONS inconsistent_interface = 1 program_error = 2 OTHERS = 3. IF sy-subrc <> 0. MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4. ENDIF. ls_fieldcat-seltext_l = 'Role Count'. ls_fieldcat-seltext_m = 'Role Count'. ls_fieldcat-seltext_s = 'Role Count'. ls_fieldcat-reptext_ddic = 'Role Count'. MODIFY lt_fieldcat FROM ls_fieldcat TRANSPORTING seltext_l seltext_m seltext_s reptext_ddic WHERE fieldname = 'ROLE_COUNT'. ls_layout-zebra = 'X'. ls_layout-colwidth_optimize = 'X'. CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY' EXPORTING is_layout = ls_layout it_fieldcat = lt_fieldcat i_save = 'A' is_variant = ls_variant TABLES t_outtab = gt_output EXCEPTIONS program_error = 1 OTHERS = 2. IF sy-subrc <> 0. MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4. ENDIF. ENDFORM. " output

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explain the script component in script?

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Explain how data is stored in cluster table?

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y we need SSF_FUNCTION_MODULE IN SMARTFORMS?

2 Answers  

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