Check the Existance of Table

Hi,
How to check the Existance of table, My require ment i have two tables lets say A And B, If table B does not exist then delete records in table A.
Can any one tel me how to write a query.
Thanks in Advance

hi,
whether your requirement is to check the existence of table B in the entire database or only in your schema.
because:
the user_tables contains the tables owned by the owner of the schema,
and all_tables caontains the tables that can be access by you,
and dba_tables contains all teh tables in your database.
so based on your req query any one of the table and check as suggested earlier by others.
and the 'tab' table also shows if there is any synonym with the table name as 'B'.
so if you are going for 'tab' table then also specify the column "TABTYPE = 'TABLE' ".

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here output is not showing the amount field value.
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Hi Sekhar,
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This script is not checking the existing of the new created item

Dear Friends
I have This script is not checking the existing of the new created item I am using this script in side WHEN-BUTTON-PRESSED trigger
I am using oracle Forms [32 Bit] Version 6.0.8.11.3 (Production)
My script as the following :
BEGIN
BEGIN
SELECT ITEM_CODE INTO :GLOBAL.DUMMY
FROM IM_INVENTORY
WHERE ITEM_CLASS = TO_NUMBER(RTRIM(LTRIM(:IM_NEW_ITEMS.ITEM_CLASS)))
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AND ITEM_LENGTH = :IM_NEW_ITEMS.ITEM_LENGTH
AND ITEM_WIDTH = :IM_NEW_ITEMS.ITEM_WIDTH
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EXCEPTION
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(ITEM_CODE,ITEM_NAME_A,ITEM_NAME_E,STOCK_ITEM,ITEM_CLASS,ITEM_TYPE,SUPP_CODE,ITEM_LENGTH,ITEM_WIDTH,
ITEM_HIGHT1,ITEM_HIGHT2,COLOR_CODE,SHAPE_CODE,ITEM_SIZE_TYPE,VOLUME,CON_FACTOR,ITEM_PRICE1,
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OPENING_COST,LAST_PUR_COST,QTY_FOR_PRICE2,QTY_FOR_PRICE3,ITEM_PRICE_METHOD,USER_ID,USER_DATE)
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RAISE FORM_TRIGGER_FAILURE ;
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END;
Waiting for your valuable answer .
Best regards
Jamil Alshaibani

Hi,
I have written the script also with constants values but still it is not going to
SHOW_MESSAGE('This Item Already Exist !!!');
and the script is written as the following :
BEGIN
SELECT 1 INTO :GLOBAL.DUMMY
FROM IM_INVENTORY
WHERE ITEM_CLASS ='110'
AND ITEM_TYPE ='110105'
AND ITEM_LENGTH = 1
AND ITEM_WIDTH = 1
AND ITEM_HIGHT1 = 1
AND ITEM_HIGHT2 = 0
AND COLOR_CODE = '3001'
AND SHAPE_CODE = '201' ;
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RAISE FORM_TRIGGER_FAILURE;
EXCEPTION
WHEN NO_DATA_FOUND THEN
show_message('here');
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(ITEM_CODE,ITEM_NAME_A,ITEM_NAME_E,STOCK_ITEM,ITEM_CLASS,ITEM_TYPE,SUPP_CODE,ITEM_LENGTH,ITEM_WIDTH,
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standard.commit; -- NEW COMMITED
clear_message; -- NEW COMMITED
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     SHOW_MESSAGE('Error : '||SQLERRM);
RAISE FORM_TRIGGER_FAILURE ;
WHEN OTHERS THEN
SHOW_MESSAGE('Error : '||SQLERRM);
RAISE FORM_TRIGGER_FAILURE ;
END;
Best regards
Jamil

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