create temp table... but you have to be sure to drop the temp table before existing out of the function. The choice between index scan and bitmap index scan is basically decided by how many rows per data page Postgres expects to retrieve - which depends on statistics about data distribution in the table and selectivity of your query predicates. Introduction to PostgreSQL Temporary Table. Temporary table already exists. As of PostgreSQL 8.0, the CREATE TABLE AS … The appropriate syntax for creating a temp table is. In PostgreSQL 8.1, this is not the case — to include OIDs in the new table, the default_with_oids configuration variable must be enabled. Hi there, in my database I'm using several stored_functions that take advantage of temporary table. Notes. The temporary table is select the records with actual tables and nothing PostgreSQL automatically drops the temporary tables at the end of a session or a transaction.. Syntax: CREATE TEMPORARY TABLE temp_table( ... ); or, CREATE TEMP TABLE temp_table… Are you doing all this in the same session? To create a new table with the structure and data derived from a result set, you specify the new table name after the INTO keyword.. However, there is more to temporary tables than meets the eye. PostgreSQL allows you to configure the lifespan of a temporary table in a nice way and helps to avoid some common pitfalls. Here we just join the temporary table (dataimport) with branch and iteminfo table for getting the required records according to our need. I copied the > original on instead of the second instance, but the results were the > same. Note that the CREATE TABLE AS statement is similar to the SELECT INTO statement, but the CREATE TABLE AS statement is preferred because it is not confused with other uses of the SELECT INTO syntax in PL/pgSQL.In addition, the CREATE TABLE AS statement provides a superset of functionality offered by the SELECT INTO statement.. On Friday, February 24, 2012 5:46:06 am [hidden email] wrote: > Andrew, > > That is acutally what the second run was supposed to be. CREATE TEMPORARY TABLE statement creates a temporary table that is automatically dropped at the end of a session, or the current transaction (ON COMMIT DROP option). CREATE TEMPORARY TABLE … By default, a temporary table will live as long as your database connection. It will be dropped as soon as you disconnect. This command is functionally similar to SELECT INTO, but it is preferred since it is less likely to be confused with other uses of the SELECT INTO syntax. Furthermore, CREATE TABLE AS offers a superset of the functionality offered by SELECT INTO. I wrote a library to emulate Oracle-style global temporary tables for PostgreSQL. In order to create a temporary table, you can use alternately TEMPORARY and TEMP. Your summary looks very accurate and helpful, so I added a link to your summary in my article. Suppose we have a "branch" table which is not a temp table it has some records and one "iteminfo" table which also have some records. The PostgreSQL has a very useful database feature that has an ability to create temporary tables for a current transaction or for the database session. Prior to PostgreSQL 8.0, CREATE TABLE AS always included OIDs in the table it created. Prior to PostgreSQL 8.1, the table created by SELECT INTO included OIDs by default. The UNLOGGED keyword if available will make the new table as an unlogged table.. The TEMP or TEMPORARY keyword is optional; it allows you to create a temporary table instead.. 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