If pseudocolumns are enabled, the maximum number of columns you can define Spectrum_enable_pseudo_columns configuration parameter toįalse. Pseudocolumns for a session by setting the For more information about valid names, see Names and identifiers.īy default, Amazon Redshift creates external tables with the pseudocolumns You can't specify column names "$path" or You can use UTF-8 multibyte characters up to a maximum The maximum length for the column name is 127 bytes longer names are The name and data type of each column being created. The table name must be a unique name for the specified schema.įor more information about valid names, see Names and identifiers. Views in the system databases template0, template1, If the database or schema specified doesn't exist, the table isn'tĬreated, and the statement returns an error. CREATE EXTERNAL TABLEĬreate external table spectrum_db.spectrum_schema.test (c1 int) The following is the syntax for CREATE EXTERNAL TABLE AS. Specific permissions for external tables. The Usage notes have additional information about You can't GRANT or REVOKE permissions on an external table. To external tables is controlled by access to the external schema. To transfer ownership of an external schema, use ALTER SCHEMA to change the owner. To create external tables, you must be the owner of the external schema or a superuser. Information about transactions, see Serializable isolation. You can't run CREATE EXTERNAL TABLE inside a transaction (BEGIN … END). To create a view with an external table, include the WITH NO SCHEMA BINDING clause in For more information, see INSERT (external table). You can also use the INSERT syntax to write new files into the location of external You can query an external table using the same SELECT syntax you use with other Amazon Redshift For more informationĪbout CREATE EXTERNAL TABLE AS, see Usage notes. Registers new partitions into the external catalog automatically. Partition key or keys, Amazon Redshift partitions new files according to those partition keys and Results are in Apache Parquet or delimited text format. On the column definition from a query and write the results of that query into Amazon S3. To view external tables, query theīy running the CREATE EXTERNAL TABLE AS command, you can create an external table based Need to create the table using CREATE EXTERNAL TABLE. The external table exists in an AWS Glue or AWS Lake Formation catalog or Hive metastore, you don't Use the CREATE EXTERNAL SCHEMA command to register an external databaseĭefined in the external catalog and make the external tables available for use in Amazon Redshift. Reference external tables defined in an AWS Glue or AWS Lake Formation catalog or an Apache Hive In addition to external tables created using the CREATE EXTERNAL TABLE command, Amazon Redshift can For more information, see CREATE EXTERNAL SCHEMA. Search path isn't supported for external schemas andĮxternal tables. All external tables must beĬreated in an external schema. Creates a new external table in the specified schema.
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