Equivalent for EXISTS() in an IF statement? Make sure to check the table name from the resultset with an equals match. Check if record exists using the Count() function. Ask Question Asked 9 years ago. Active 4 years, 1 month ago. Help to check if Oracle table exists. 2 Solutions. Query Catalog Views. Subject: [teradata-l] Check whether table exist or not using bteq. If the count is greater than 0 means, the records exist else not exist. How to check if a value (null/non null) exists in database table using stored pro; Check to see weather the column already exists, if not add the column; to check if a table exists; Is there a way to check the order in which SET INTEGRITY needs to be applied? Below are the examples to check if a record exists using PL/SQL in Oracle. dyarosh asked on 2013-05-06. Trying to check is table exist before create in Oracle. Check for existence of a table; Q: Drop table and check if table exists Thanks in advance I realize I could use the following query to check if a table exists or not. In the dialect for procedural SQL in MSSQL and Sybase, there's a useful little idiom for checking whether rows exist on a table, and it looks like this... if exists (select 'x' from foo where bar) /* found, do something */ else /* not found, do something else */ Check if a table exists in an oracle sql database with c#. SELECT * FROM dba_tables where table_name = 'table_name'; The following Oracle PL/SQL block will use the count() function in implicit cursor to count the records for particular criteria. Can anyone tell me how to check if table exists or not.if table exist then insert records .if not exist create a table.is this possible using bteq? Search for most of the post from Stackoverflow and others too. How can I check if a table, sequence or trigger already exists so I don't try and create it? Suppose you are checking for the existence of a table named EMPLOYEE_SALARY. I am trying to write a script which allows a user to select the what manipulation he needs to do on a table. Viewed 6k times 1. I have a script where I am creating a lot of tables with sequences and triggers. select NVL ((select 'Y' from dual where exists (select 1 from sales where sales_type = 'Accessories')),'N') as rec_exists from dual 1.Dual table will return 'Y' if record exists in sales_type table 2.Dual table will return null if no record exists in sales_type table and NVL will convert that to 'N' Posted by preetipatil (Teradata) on Oct 26 at 2:44 AM . If it exists I will continue the other things or else I exit saying table doesn't exist. set serveroutput on declare c varchar2(10); begin select case when exists (select * from my_table) then 'has rows' else 'no rows' end into c from dual; dbms_output.put_line(c); end; / Note that both the EXISTS and rownum = 1 version will stop on the first row found, and that's the point, so we don't need to read the whole table/index. Does Oracle have a similar mechanism? Oracle does not provide IF EXISTS clause in the DROP TABLE statement, but you can use a PL/SQL block to implement this functionality and prevent from errors then the table does not exist. I want to check if the table exists or not. Find some query but it didn't work for me. Last Modified: 2013-05-08. IF((SELECT count(*) FROM dba_tables where table_name = 'EMPLOYEE') <= 0) THEN create table EMPLOYEE ( ID NUMBER(3), NAME VARCHAR2(30) NOT NULL ) END IF; 25,562 Views. Oracle Database; 21 Comments. DROP TABLE IF EXISTS `table_name`; This way, if the table doesn't exist, the DROP doesn't produce an error, and the script can continue. How might I achieve this. You can query catalogs views (ALL_TABLES or USER_TABLE i.e) to check if the required table exists: The reason is that the getTables() does pattern matching on the query for the table and the _ character is a wildcard in SQL. The former is much faster if you are only searching for a single table. How to check if a table exists in an Oracle SQL Script. Sql script a script where I am creating a lot of tables sequences. For most of the post from Stackoverflow and others too script which allows a user to select the what he. Want to check is table exist before create in Oracle use the following PL/SQL! Oct 26 at 2:44 am trying to check if a table the resultset with an equals match continue other... A table named EMPLOYEE_SALARY from the resultset with an equals match find some but! 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