Answer / ad

The SELECT SINGLE statement selects the first record in the
database table depending on the condition mentioned in the
WHERE clause. Only the first record is returned and may not
be unique. ENDSELECT keyword is not needed here.

But for the case of SELECT UPTO 1 ROW, all relevant records
are being selected depending on the WHERE clause. Then any
aggregate or grouping or ordering condition is applied to
them and only the 1st record from the resultant set is
being returned. ENDSELECT is must here.

SELECT SINGLE should be used for selecting with full
primary key combination but SELECT UP TO 1 ROWS is the
special case of SELECT UP TO n ROWS and can be used with
any WHERE condition.

As regarding the speed or performance it depends on various
conditions. If your database table contains several
entries, then SELECT UPTO 1 ROWS might take a longer time
to fetch and order all relevant records. But for limited
entries check for full primary key combination takes more
time in case of SELECT SINGLE. If you donot provide all
primary keys in SELECT SINGLE you will get message during
extended syntax check (SLIN).

Answer / kiran kumar v

Select Single * -- 1) Will never have endselect.2)
Applicable key fields are mentioned in Where clause.3) It
retrieves the first record which matches the condition.

Select upto 1 row -- 1) Will have endselect. 2)Where clause
is not mandatory. 3) Pull up all the records and display
the first record in the list.

Answer / m raj

If i know the answer, i would have got the better job.

Answer / chitta ranjan mahato

I am agree with the above answers given but I am to add
few lines.
Select Single can give you best performace when it is fired
with full primary key.
Select up to 1 rows is a special case of select up to n
rows.

there is almost no difference in performace in small
database. select single is used to check the avaviility of
particular record in database.

Answer / chittidi

select single f1 f2 f3 ... into <wa> from <dbtab> where
<condition>. this where condition is important to fetch
exact record from database . for thsi purpose we provide
entire primary key combination in whrere conditon.
by using this statement to read exact information .

select f1 f2 f3 .... into <wa> from <dbtab> up to 1 rows
where <condition>
endselect.
it reads the first record found which may not be exact .
the where condition can be part of primary key combination.
it is mainly used to validate the INPUT.

IF WE ARE NOT PASSING ENTIRE COMBINATION OF PRIMARY KEY
IN SELET * SINGLE IT SIMPLY ACTS AS SELECT * UP TO 1 ROWS.

Answer / kapil goyal

Select single fetches first matching record. If more than one matching records are there then only the first matching record will be considered other records will not be taken into account. Where as select up to 1 rows will fetch all the matching records from the database.(Again it will assign only One Record to the internal table/Work area)

What is an rfc?

0 Answers  

In a script, i want to print something at end of last page only.How can i print it?

2 Answers   Satyam,

Can you give the Example for the structure of an ABAP program? REPORT... NODES: SPFLI, SFLIGHT. DATA:... INITIALIZATION. AT SELECTION-SCREEN. START-OF-SELECTION. GET SPFLI... GET SFLIGHT... GET SPFLI LATE. END-OF-SELECTION. FORM... ENDFORM.

0 Answers  

18) Difeerence between various BDC method.Which is the best one?

1 Answers   SCS,

What are the different types of parameters? How can you distinguish between different kinds of parameters?

0 Answers  

In Function module SAP provieds Two Standard Exception, give name of that two exceptions.

3 Answers   SAP Labs,

We execute the BDC program in foreground and got list in C drive. If the same program we can execute in back ground what happen?

2 Answers  

How do you document ABAP programs? Do you use program documentation menu option?

0 Answers  

How you can handle errors in BDC.IN the log file what type of error mostly will be facing in real time

2 Answers   TCS,

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

0 Answers  

what is the Currency and Quantity field in BDC?

6 Answers   Cap Gemini,

where do we define LDB to a program ?

1 Answers