![]() See Use OSS foreign tables to access OSS data. The options that are used to create a temporary OSS foreign table. Other options that are used to create an OSS foreign table, including format, filetype, Note Only the manifest file can be overwritten. Specifies whether to overwrite the existing manifest file. Temporary OSS server for the UNLOAD statement. The oss_fdw plug-in is required when you create a The following table describes the available options. If the size of the exported data does notĮxceed 8 GB, the exported data is saved in a single file. If you set this parameter to OFF/FALSE, the data is not exported in parallel. A separate exportedįile is generated for each compute node. PARALLEL: specifies whether to export data from multiple compute nodes in parallel.īy default, data is exported from multiple compute nodes in parallel.Note If the file that is specified by already exists, you must set the allowoverwrite option to true in ] to overwrite the manifest file. If you do not specify, the path of the manifest file is the same as that of the data files. The path must end with the manifest suffix. , the full path of the manifest file is different from that of the data files thatĪre located in a different bucket. MANIFEST: specifies to generate a manifest file when data is imported.For example, FORMATĪS CSV or FORMAT CSV is equivalent to CSV. In the parameter name, FORMAT and AS can be omitted. The file format in which the exported data destination_url: the URL of the OSS bucket in which the query result data is stored.select-statement: the SELECT query statement.The following section describes the parameters: ![]() Execute the following statement to query the error line details: select * from gp_read_error_log('').NOTICE: found 3 data formatting errors (3 or more input rows), rejected related input data If the number of error lines exceeds 10, the system returns an error and exits. Segment_reject_limit '10' - Up to 10 error lines are allowed. Log_errors 'true' - The information of the error lines is recorded in log files. Use the COPY statement to import data from an OSS object that has three error lines.create table sales(id integer, value float8, x text) distributed by (id) If the number of error linesĮxceeds 10, the system returns an error and exits. segment_reject_limit: Up to 10 error lines are allowed.log_errors: specifies whether to record information of the error lines in log files.In this case, you can set the following options to implement fault tolerance: When you use the COPY statement to import data from OSS, error lines may be returned. MANIFEST - Specifies that the data source is a manifest file. Import an OSS object from the manifest file.įROM 'oss://adbpg-regress-2/unload_manifest/t_manifest' Use the COPY statement to import the data from the manifest file to the local table.The OSS objects must be accessible by using the same ACCESS_KEY_ID The OSS objects can be in differentīuckets or paths. entries: an array of the OSS objects in the manifest file.Must be in the JSON format and consist of the following elements: : specifies that the data source is a manifest file.For example, FORMAT AS CSV or FORMAT CSV is equivalent to CSV. In the parameter name, FORMAT and AS can be The file format in which the imported data : the AccessKey secret of the OSS account.data_source: the URL of the OSS bucket from which data is obtained.If youĭo not specify this parameter, data is written to all columns. The list of columns to which you want to write data. Local table must exist in the AnalyticDB for PostgreSQL instance. table_name: the name of the local table in which the imported data is stored.Options in a particular way: delimiter, quote, null, header, escape, and encoding. If you do not follow this requirement, some options may be the ![]() When you use the COPY or UNLOAD statement to export data and store the data in a CSVįile, you must enclose some options in quotation marks (") and write the options in
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