Amazon Redshift Spectrum external tables are read-only. You can't COPY to an external table. The COPY command appends the input data as additional rows to the table. The maximum size of a single input row from any source is 4 MB. COPY table-name [ column-list ] FROM data_source authorization [ [ FORMAT ] [ AS ] data_format ] [ parameter [ argument ] [, ... ] ] You can perform a COPY operation with
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