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Is temporary table supported by MySQL?
After a session has created a temporary table, the server performs no further privilege checks on the table. Support for TABLESPACE = innodb_file_per_table and TABLESPACE = innodb_temporary clauses with CREATE TEMPORARY TABLE is deprecated as of MySQL 8.0. 13; expect it be removed in a future version of MySQL.
What is temporary table in SQL?
A temporary table in SQL Server, as the name suggests, is a database table that exists temporarily on the database server. A temporary table stores a subset of data from a normal table for a certain period of time. Temporary tables are stored inside “tempdb” which is a system database.
When to drop temporary table in MySQL stored procedure?
By default MySQL config variable sql_notes is set to 1. That means that DROP TEMPORARY TABLE IF EXISTS performance; increments warning_count by one and you get a warning when a stored procedure finishes. You can set sql_notes variable to 0 in my.cnf or rewrite stored procedure like that:
How to check if a temporary table exists in MySQL?
If the temporary table exists, the @table_exists variable is set to 1, otherwise, it sets to 0. This statement calls the check_table_exists to check if the temporary table credits exists:
Can a temporary table be created in the same session?
A temporary table is only available and accessible to the client that creates it. Different clients can create temporary tables with the same name without causing errors because only the client that creates the temporary table can see it. However, in the same session, two temporary tables cannot share the same name.
How long does a stored procedure take in MySQL?
The intent is to grab a chunk of batch items via a stored procedure identified by a batch job id and restricted to a number of items (size). The query seems to take 1 second initially and then takes consecutively longer with each call to the stored proc.