Avoiding duplicate records while inserting into the table

Hi
I tried the following insert statement , where i want to avoid the duplicate records while inserting itself
but giving me the errror like invalid identifier, though the column exists in the table
Please let me know Where i'm doing the mistake.
INSERT INTO t_map tm(sn_id,o_id,txt,typ,sn_time)
   SELECT 100,
          sk.obj_id,
          sk.key_txt,
          sk.obj_typ,
          sysdate,
          FROM S_KEY sk
    WHERE     sk.obj_typ = 'AY'
          AND SYSDATE BETWEEN sk.start_date AND sk.end_date
          AND sk.obj_id IN (100170,1001054)
           and   not exists (select 1
                                                               FROM t_map tm1 where tm1.O_ID=tm.o_id
                                                                    and tm1.sn_id=tm.sn_id
                                                                    and tm1.txt=tm.txt
                                                                    and tm1.typ=tm.typ
                                                                    and tm1.sn_time=tm.sn_time )

Then
you have to join the table with alias tml where is that ?do you want like this?
INSERT INTO t_map tm(sn_id,o_id,txt,typ,sn_time)
   SELECT 100,
          sk.obj_id,
          sk.key_txt,
          sk.obj_typ,
          sysdate,
          FROM S_KEY sk
    WHERE     sk.obj_typ = 'AY'
          AND SYSDATE BETWEEN sk.start_date AND sk.end_date
          AND sk.obj_id IN (100170,1001054)
           and   not exists (select 1
                                                               FROM t_map tm where sk.obj_ID=tm.o_id
                                                                    and 100=tm.sn_id
                                                                    and sk.key_txt=tm.txt
                                                                    and sk.obj_typ=tm.typ
                                                                    and sysdate=tm.sn_time )

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Hi Everyone,
A Very Very Happy, Fun-filled, Awesome New Year to You All.
Now coming to the discussion of my problem in Oracle Forms 6i:
I have created a form in which the data is entered & saved in the database.
CREATE TABLE MATURED_FD_DTL
ACCT_FD_NO    VARCHAR2(17 BYTE)               NOT NULL,
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FD_AMT        NUMBER(15),
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FD_SR_NO                NUMBER(8)             NOT NULL,
FD_DTL_SL_NO            NUMBER(5),
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FD_AMT                  NUMBER(15,2),
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ECS_ADD_INT_AMT         NUMBER(16),
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Its not working properly.
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MESSAGE(' ',no_acknowledge);
It worked properly when i executed first time, but second time , in database duplicate values were stored.
Example: First I entered the following in the form & saved it.
ACCT_FD_NO
CUST_CODE
FD_AMT
FD_INT_BAL
PREV_YR_TDS
TDS
ADD_FD_AMT
P_SAP_CODE
P_TYPE
CHQ_NO
DESCRIPTION
250398
52
50000
6000
0
600
0
45415
P
5678
int1
320107
56
100000
22478
3456
2247
0
45215
R
456
320108
87
50000
6500
0
650
0
21545
W
0
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ACCT_FD_NO
P_TYPE
250398
P
But second time, when i entered the following in the form & saved.
ACCT_FD_NO
CUST_CODE
FD_AMT
FD_INT_BAL
PREV_YR_TDS
TDS
ADD_FD_AMT
P_SAP_CODE
P_TYPE
CHQ_NO
DESCRIPTION
260189
82
50000
6000
0
600
0
45415
P
5678
interest567
120011
46
200000
44478
0
4447
0
45215
R
456
30191
86
50000
6500
0
650
0
21545
W
56
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ACCT_FD_NO
P_TYPE
250398
P
250398
P
260189
P
320107
R
320108
W
There was duplicate of 250398 which i dint enter in the form second time,
All the other P_TYPE was also inserted , but i want only the P_TYPE='P' to be inserted into the database.
I want only those records to be inserted into the form where P_TYPE='P' and duplicate rows must not be entered.
How do i do this???

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Does a temp table is reuired to insert into a table

Hi ,
I am using a stored procedure to check the availability of a record in a table and deleting the record if exists ,
actually if the user have multiple record i need to delete and store it in removed table , so i used insert with select command to insert into the table , do i need to use a temp table to insert multiple record in removed table .
Thank You
Jeevan Vinay

No, it doesn't need to be that complex.
The records need to go to your deleted/history table, and they also need to be deleted from the main table. I would just insert the records into the history table and delete the records from your main table by joining back to it on the delete with the PK.
You could try something like this:
CREATE TABLE ##main_table (employee_id INT IDENTITY(1,1), employee_name VARCHAR(50))
CREATE TABLE ##history_table (employee_id INT, employee_name VARCHAR(50))
INSERT INTO ##main_table (employee_name)
SELECT 'Alice'
UNION ALL
SELECT 'Bob'
UNION ALL
SELECT 'Charlie'
--Bob is the user that will get deleted (employee_id = 2)
--Insert record into history table
INSERT INTO ##history_table
SELECT *
FROM ##main_table
WHERE employee_id = 2
--Delete record from main table
DELETE m
FROM ##main_table m
JOIN ##history_table h
ON m.employee_id = h.employee_id
SELECT *
FROM ##history_table
SELECT *
FROM ##main_table

Avoiding duplicate records while inserting into the table

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