I tested the following queries on Teradata 12 and the first CREATE query didn't execute while the later worked having the only difference of "," and "_' between the two. does teradata allow to drop table and allow re create table by using if exist? Create the table orders_by_date if it does not already exist: CREATE TABLE IF NOT EXISTS orders_by_date AS SELECT orderdate , sum ( totalprice ) AS price FROM orders GROUP BY orderdate Create a new empty_nation table with the same schema as nation and no data: 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? Table exists and shows in dbc.tablesize but not showing in dbc.tables ... We can create tables with comma in the name, but is not recommended. There are other various methods by which you can get your desire table quickly. Posted by preetipatil (Teradata) on Oct 26 at 2:44 AM . If the table does not exist, then the first query does not return any data and hence activitycount = 0 wherein the control is transferred to the part with label no_tab which has already skipped the section with the DROP and hence DROP statement will not execute. REPLACE VIEW redefines an existing view or, if the specified view does not exist, creates a new view with the specified name. Hello, I'm working on a code that will help determine if a table exists in a database or not. Privileges that were granted directly on the original view are … Teradata create table as select: Below example shows to create a employee table base on there marital status. By now you have learnt how to create table in teradata. Purpose Creates or replaces a view on a set of tables or views or both. The LIKE clause can be used to include all the column definitions from an existing table in the new table. Subject: [teradata-l] Check whether table exist or not using bteq. DROP TABLE SomeVolatileTable; CREATE VOLATILE TABLE SomeVolatileTable AS ( SELECT TOP 10 * FROM SomeSourceTable ) WITH DATA ON COMMIT PRESERVE ROWS; In sql server you can check if a temporary table exists: IF OBJECT_ID('tempdb..#SomeTempTable') IS NOT NULL DROP TABLE #SomeTempTable Does something similar exist in Teradata? Using a NoPI table for staging purposes improves performance when loading data from FastLoad and TPump jobs because the table is not hashed by a PI and the rows do not have to be sorted in any particular order or … To create a staging table, use a NoPI table which is a table without a PI. Suppose you want only those employee whose marital status is SINGLE. Multiple LIKE clauses may be specified, which allows copying the columns from multiple tables.. EXISTS checks the existence of records in the target table. bteq << eof select 1 from DBC.TablesV where databasename = 'YOUR_DB'; --and TableName = 'YOUR_TABLE'; --Could add and table here. If INCLUDING PROPERTIES is specified, all of the table properties are copied to the new table. .if activitycount = 0 then .quit 1 .quit 0 eof Possible duplicate of If table exists drop table then create it, if it does not exist just create it – Mathieu VIALES Oct 25 '17 at 11:43 3 @Wndrr: This is a MySQL extension which is not supported in Teradata. This could help you to check if DB exist and/or table and if bteq exit with 1 not to proceed with loading. If the records are present, then EXISTS will be evaluated true otherwise we can say that the EXISTS condition is considered "to be met" if the sub query returns at least one row. 0. preeti patil Posted October 26, 2009 0 Comments Thanks in advance.
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