DB Constraint for one record in a table

Hi I have some config tables where the rule is only one record should be in the table. How can I make a constraint in the database to enforce that only X number of records can be inserted? In this case x=1 :)
BR
Tim

Use the UNIQUE constraint on this field :
SQL> create table t (x number UNIQUE) ;
Table created.
SQL> insert into t values (1) ;
1 row created.
SQL> insert into t values (1) ;
insert into t values (1)
ERROR at line 1:
ORA-00001: unique constraint (SYSTEM.SYS_C001808) violated
U can add this constraint to a field with the ALTER TABLE ADD CONSTRAINT command.
Fred

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Hi,
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904385 wrote:
Hi,
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Hi,
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001............A
002............A
002............B
002............C
002.............
003............
004............GG
004............DD
004............FF
004............MM
004............TT
008.............BB
0022..............
0033..............
0044............A
0044............
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0033..............
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First of all THANKS this worked!
But now I stumbled on another issue. So I actually have 3 tables (and I've adopted them to the file you sent)
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LongLat
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Type
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Size
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Seattle, WA
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0
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1
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San Francisco, CA
Begin
0
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Cali Trip
32.682611, -117.178348
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1
1
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TripInfo
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OneLongLat
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47.568077, -122.320800
1/1/2015
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37.808848, -122.412580
1/5/2015
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1
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2
Owner2
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3
Owner3
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Owner4
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1
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2
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Peoplesoft Panels for one record on two different level

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There are two key fields on the record. I want to display only one key field as header and rest on the grid. Two key fields are
New item (K) search key, list box
Old item (K) search key, list box
other fields...
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2. But, I also want another panel that needs old item field in the header and bunch of new items in the grid for the same record(one old item being replaced by few new items).
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Need help with a SQL qurey that returns multiple rows for one record?

I have the following query where I use a CASE WHEN clause to determine the date of a shift that begins with "FRLO" on day1 - day14 of the pay period. It works great if a schedule record contains one day that begins "FRLO", but if more than one day is "FRLO" then it only returns the first day it finds and not the others. Is there some way to get the query to return a ron for every day 1 - 14 that begins "FRLO"? System if Oracle 11G
Order of the results is not important as this is part of a larger query that orders the results.
Thanks in advance for any help,
George
SELECT s.empid,
CASE
WHEN UPPER (SUBSTR (s.Day1, 0, 4)) = 'FRLO'
THEN
pp.startpp
WHEN UPPER (SUBSTR (s.Day2, 0, 4)) = 'FRLO'
THEN
pp.startpp + 1
WHEN UPPER (SUBSTR (s.Day3, 0, 4)) = 'FRLO'
THEN
pp.startpp + 2
WHEN UPPER (SUBSTR (s.Day4, 0, 4)) = 'FRLO'
THEN
pp.startpp + 3
WHEN UPPER (SUBSTR (s.Day5, 0, 4)) = 'FRLO'
THEN
pp.startpp + 4
WHEN UPPER (SUBSTR (s.Day6, 0, 4)) = 'FRLO'
THEN
pp.startpp + 5
WHEN UPPER (SUBSTR (s.Day7, 0, 4)) = 'FRLO'
THEN
pp.startpp + 6
WHEN UPPER (SUBSTR (s.Day8, 0, 4)) = 'FRLO'
THEN
pp.startpp + 7
WHEN UPPER (SUBSTR (s.Day9, 0, 4)) = 'FRLO'
THEN
pp.startpp + 8
WHEN UPPER (SUBSTR (s.Day10, 0, 4)) = 'FRLO'
THEN
pp.startpp + 9
WHEN UPPER (SUBSTR (s.Day11, 0, 4)) = 'FRLO'
THEN
pp.startpp + 10
WHEN UPPER (SUBSTR (s.Day12, 0, 4)) = 'FRLO'
THEN
pp.startpp + 11
WHEN UPPER (SUBSTR (s.Day13, 0, 4)) = 'FRLO'
THEN
pp.startpp + 12
WHEN UPPER (SUBSTR (s.Day14, 0, 4)) = 'FRLO'
THEN
pp.startpp + 13
END
startdate,
NULL starttime,
NULL endtime,
8 hours,
0 minutes
FROM schedules s
JOIN
payperiods pp
ON pp.periodid = s.periodid
WHERE UPPER (SUBSTR (s.Day1, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day2, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day3, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day4, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day5, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day6, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day7, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day8, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day9, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day10, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day11, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day12, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day13, 0, 4)) = 'FRLO'
OR UPPER (SUBSTR (s.Day14, 0, 4)) = 'FRLO';
CURRENT OUTPUT
EMPID STARTDATE STARTTIME ENDTIME HOURS MINUTES
753738, 3/25/2013 , , ,8 ,0
753740, 3/25/2013 , , ,8 ,0
753748, 3/25/2013 , , ,8 ,0
DESIRED OUTPUT
EMPID STARTDATE STARTTIME ENDTIME HOURS MINUTES
753738, 3/25/2013 , , ,8 ,0
753740, 3/25/2013 , , ,8 ,0
753748, 3/25/2013 , , ,8 ,0
753738, 3/26/2013 , , ,8 ,0
753740, 3/26/2013 , , ,8 ,0
753740, 3/28/2013 , , ,8 ,0
753748, 1/1/2013 , , ,8 ,0
753738, 4/3/2013 , , ,8 ,0
753748, 4/3/2013 , , ,8 ,0
CREATE TABLE SCHEDULES
SCHEDULEID NUMBER(12) NOT NULL,
EMPID NUMBER(12) NOT NULL,
PERIODID VARCHAR2(6 BYTE) NOT NULL,
AREAID NUMBER(12) NOT NULL,
DAY1 VARCHAR2(50 BYTE),
DAY2 VARCHAR2(50 BYTE),
DAY3 VARCHAR2(50 BYTE),
DAY4 VARCHAR2(50 BYTE),
DAY5 VARCHAR2(50 BYTE),
DAY6 VARCHAR2(50 BYTE),
DAY7 VARCHAR2(50 BYTE),
DAY8 VARCHAR2(50 BYTE),
DAY9 VARCHAR2(50 BYTE),
DAY10 VARCHAR2(50 BYTE),
DAY11 VARCHAR2(50 BYTE),
DAY12 VARCHAR2(50 BYTE),
DAY13 VARCHAR2(50 BYTE),
DAY14 VARCHAR2(50 BYTE),
NOPTIND1 INTEGER DEFAULT 0,
NOPTIND2 INTEGER DEFAULT 0,
NOPTIND3 INTEGER DEFAULT 0,
NOPTIND4 INTEGER DEFAULT 0,
NOPTIND5 INTEGER DEFAULT 0,
NOPTIND6 INTEGER DEFAULT 0,
NOPTIND7 INTEGER DEFAULT 0,
NOPTIND8 INTEGER DEFAULT 0,
NOPTIND9 INTEGER DEFAULT 0,
NOPTIND10 INTEGER DEFAULT 0,
NOPTIND11 INTEGER DEFAULT 0,
NOPTIND12 INTEGER DEFAULT 0,
NOPTIND13 INTEGER DEFAULT 0,
NOPTIND14 INTEGER DEFAULT 0
CREATE TABLE PAYPERIODS
PERIODID VARCHAR2(6 BYTE) NOT NULL,
STARTPP DATE,
ENDPP DATE
Insert into SCHEDULES
(SCHEDULEID, EMPID, PERIODID, AREAID, DAY1,
DAY2, DAY3, DAY4, DAY5, DAY6,
DAY7, DAY8, DAY9, DAY10, DAY11,
DAY12, DAY13, DAY14, NOPTIND1, NOPTIND2,
NOPTIND3, NOPTIND4, NOPTIND5, NOPTIND6, NOPTIND7,
NOPTIND8, NOPTIND9, NOPTIND10, NOPTIND11, NOPTIND12,
NOPTIND13, NOPTIND14)
Values
(3693744, 753738, '082013', 2167, 'X',
'FRLO<1530>', 'FRLO<1530>', '1530', '1530', '1530',
'X', 'X', '1530', '1530', 'FRLO',
'1530', '1530', 'X', 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0);
Insert into SCHEDULES
(SCHEDULEID, EMPID, PERIODID, AREAID, DAY1,
DAY2, DAY3, DAY4, DAY5, DAY6,
DAY7, DAY8, DAY9, DAY10, DAY11,
DAY12, DAY13, DAY14, NOPTIND1, NOPTIND2,
NOPTIND3, NOPTIND4, NOPTIND5, NOPTIND6, NOPTIND7,
NOPTIND8, NOPTIND9, NOPTIND10, NOPTIND11, NOPTIND12,
NOPTIND13, NOPTIND14)
Values
(3693745, 753740, '082013', 2167, 'X',
'FRLO<1530>', 'FRLO<1530>', '1530', 'FRLO', '1530',
'X', 'X', '1530', '1530', '1530',
'1530', '1530', 'X', 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0);
Insert into SCHEDULES
(SCHEDULEID, EMPID, PERIODID, AREAID, DAY1,
DAY2, DAY3, DAY4, DAY5, DAY6,
DAY7, DAY8, DAY9, DAY10, DAY11,
DAY12, DAY13, DAY14, NOPTIND1, NOPTIND2,
NOPTIND3, NOPTIND4, NOPTIND5, NOPTIND6, NOPTIND7,
NOPTIND8, NOPTIND9, NOPTIND10, NOPTIND11, NOPTIND12,
NOPTIND13, NOPTIND14)
Values
(3693746, 753748, '082013', 2167, 'X',
'FRLO<1530>', '1530', '1530', '1530', '1530',
'X', 'X', 'FRLO<1530>', '1530', 'FRLO',
'1530', '1530', 'X', 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0);
COMMIT;
Insert into PAYPERIODS
(PERIODID, STARTPP)
Values
('082013', TO_DATE('03/24/2013 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
COMMIT;

Do you have the opportunity to change the data model to have one day per row ? It would make this easier to get this result without the need for a 14-way CASE or UNION.
If not...
The case statement will return as soon as it matches one of the conditions. Since you want a match when any column in the row starts with FRLO you can use a UNION ALL treating each column as a separate result. There may be more efficient ways to do this, but here is one way:
Select S.Empid,       Pp.Startpp Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day1, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+1 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day2, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+2 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day3, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+3 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day4, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+4 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day5, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+5 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day6, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+6 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day7, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+7 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day8, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+8 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day9, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+9 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day10, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+10 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day11, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+11 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day12, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+12 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day13, 0, 4)) = 'FRLO'
Union All
Select S.Empid,       Pp.Startpp+13 Startdate,       Null Starttime,       Null Endtime,       8 Hours,       0 Minutes
From Schedules S       Join Payperiods Pp On Pp.Periodid = S.Periodid
Where Upper (Substr (S.Day14, 0, 4)) = 'FRLO'
;

Computation only works for FIRST record in detail table

Hi,
I am having a weird problem. I have a master/detail form with page computations that work only for the very first record inserted into the detail table. If i try to enter a second or a third record the fields DO NOT get updated with the return values.
This is driving me nuts and i am on a deadline with this project. HELP!!!!!
Here is the code for all the computations below. Interestingly enough, only the name computation works for every new detail record. The others work only for the first.
-- Calulate Social Security PL/SQL Function
DECLARE
p_is16to62ssrate NUMBER(6,2);
p_u16o62ssrate NUMBER(6,2);
p_dob DATE;
p_base_date DATE := SYSDATE;
p_age NUMBER(3);
p_totalss NUMBER(9,2);
BEGIN
SELECT is16to62ssrate, u16o62ssrate
INTO p_is16to62ssrate, p_u16o62ssrate
FROM SSC3_RATES
WHERE ratescheduleid = 1;
SELECT dob
INTO p_dob
FROM SSC3_EMPLOYEES
WHERE ssno = :P25_SSNO;
p_age := TRUNC(MONTHS_BETWEEN(p_base_date,p_dob)/12);
IF (p_age >= 16) OR (p_age <=62) THEN
p_totalss := (:P25_TOTALWAGES * (p_is16to62ssrate/100));
ELSIF (p_age < 16) OR (p_age > 62) THEN
p_totalss := (:P25_TOTALWAGES * (p_u16o62ssrate/100));
ELSE
p_totalss := 0.00;
END IF;
RETURN p_totalss;
END;
-- Calculate Levy PL/SQL Function
DECLARE
-- declare local variables to hold rates from rates table
p_hsdlarate NUMBER(6,2);
p_hsdlbrate NUMBER(6,2);
p_hsdlcrate NUMBER(6,2);
p_hsdldrate NUMBER(6,2);
p_hsdlaminearnings NUMBER(8,2);
p_hsdlamaxearnings NUMBER(8,2);
p_hsdlbminearnings NUMBER(8,2);
p_hsdlbmaxearnings NUMBER(8,2);
p_hsdlcminearnings NUMBER(8,2);
p_hsdlcmaxearnings NUMBER(8,2);
p_hsdldminearnings NUMBER(8,2);
p_hsdldmaxearnings NUMBER(8,2);
p_totalwages NUMBER(8,2);
p_totallevy NUMBER(8,2);
BEGIN
-- Load rate info from table into variables
SELECT hsdlarate, hsdlbrate, hsdlcrate, hsdldrate, hsdlaminearnings,
hsdlamaxearnings, hsdlbminearnings, hsdlbmaxearnings,
hsdlcminearnings, hsdlcmaxearnings, hsdldminearnings,
hsdldmaxearnings
INTO p_hsdlarate, p_hsdlbrate, p_hsdlcrate, p_hsdldrate,
p_hsdlaminearnings, p_hsdlamaxearnings, p_hsdlbminearnings,
p_hsdlbmaxearnings, p_hsdlcminearnings, p_hsdlcmaxearnings,
p_hsdldminearnings, p_hsdldmaxearnings
FROM SSC3_RATES
WHERE ratescheduleid = 1;
-- Assign total wages to variable
p_totalwages := :P25_TOTALWAGES;
-- Determine applicable levy payment and rate
IF (p_totalwages < p_hsdlamaxearnings) THEN
p_totallevy := (p_totalwages * (p_hsdlarate/100));
ELSIF (p_totalwages >= p_hsdlbminearnings) AND (p_totalwages <= p_hsdlbmaxearnings) THEN
p_totallevy := (p_totalwages * (p_hsdlbrate/100));
ELSIF (p_totalwages >= p_hsdlcminearnings) AND (p_totalwages <= p_hsdlcmaxearnings) THEN
p_totallevy := (p_totalwages * (p_hsdlcrate/100));
ELSIF (p_totalwages >= p_hsdldminearnings) THEN
p_totallevy := (p_totalwages * (p_hsdldrate/100));
END IF;
RETURN p_totallevy;
END;
-- Calculate Total Wages PL/SQL Function
DECLARE
t_wages NUMBER(8,2);
BEGIN
t_wages := (:P25_WEEK1_WAGE + :P25_WEEK2_WAGE + :P25_WEEK3_WAGE + :P25_WEEK4_WAGE + :P25_WEEK5_WAGE + :P25_BONUS + :P25_OTHER);
RETURN t_wages;
END;
-- Calculate Employee Name PL/SQL Function
DECLARE
p_firstname VARCHAR2(20);
p_lastname VARCHAR2(20);
p_name VARCHAR2(40);
p_join VARCHAR2(2) := ', ';
BEGIN
SELECT firstname, lastname
INTO p_firstname, p_lastname
FROM SSC3_EMPLOYEES
WHERE ssno = :P25_SSNO;
p_name := Initcap(p_lastname||p_join||p_firstname);
RETURN p_name;
END;
Regards
Glenroy Skelton

Hi,
The first thing that strikes me is the following IF test:
IF (p_age >= 16) OR (p_age <=62) THEN
p_totalss := (:P25_TOTALWAGES * (p_is16to62ssrate/100));
ELSIF (p_age < 16) OR (p_age > 62) THEN
p_totalss := (:P25_TOTALWAGES * (p_u16o62ssrate/100));
ELSE
p_totalss := 0.00;
END IF;The first test will be true for every number as all numbers are greater than 16 or less than 62. I'd suggest changing the OR to an AND or use BETWEEN
Andy

DB Constraint for one record in a table

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