Every table creation in the MySQL makes physical files in the data directory of mysql server under the. SQL CONVERT() (MySQL et SQL Server) SQL CONVERT() (PostgreSQL et Oracle). Initially assigns the ALL distribution style to a small table. Command: CREATE TABLE TABLENEW LIKE TABLEOLD. SQL LIKE SQL Wildcards SQL IS NULL / IS NOT NULL SQL GROUP BY SQL WITH. For example, if AUTO distribution style is specified, Amazon Redshift Possible distribution styles are as follows:ĪUTO: Amazon Redshift assigns an optimal distribution style based on the tableĭata. For more information, see Working with data distribution styles. The distribution style that you select for tables affects the overall To determine which tables are missing primary keys, copy and paste the following command into the MySQL shell and run it: SELECT tab.tableschema AS databasename, tab.tablename AS tablename, tab.tablerows AS tablerows FROM informationschema. ![]() ![]() Keyword that defines the data distribution style for the whole table.Īmazon Redshift distributes the rows of a table to the compute nodes according to theĭistribution style specified for the table.
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