syntaxsql复制 -- Create a new external tableCREATEEXTERNALTABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} (<column_definition>[ ,...n ] )WITH(LOCATION='folder_or_filepath',DATA_SOURC
Syntax -- Partitions computed from expressions CREATE [ OR REPLACE ] EXTERNAL TABLE [IF NOT EXISTS] <table_name> ( [ <col_name> <col_type> AS <expr> | <part_col_name> <col_type> AS <part_expr> ] [ inlineConstraint ] [ , <col_name> <col_type> AS <expr> | <part_col_name...
SyntaxTable_External_Specification := 'FROM' Datasource_Identifier 'LOCATION' Static_String_Expression. Datasource_Identifier := DB_Object_Identifier. The data source identifier is the name of the data source that has been created with the CREATE DATA SOURCE statement. The static string expression ...
CREATE EXTERNAL TABLE table-name (,column-definition)LIKEtable-name1view-namenickname USING ( optionoption-value) Use the following syntax to use an existing table as a template for a new external table and to populate it with the contents of the source table. If this statement specifies a...
syntaxsql複製 -- Create a new external tableCREATEEXTERNALTABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} (<column_definition>[ ,...n ] )WITH(LOCATION='folder_or_filepath',DATA_SOURCE=external_data_source_name, [FILE_FORMAT=external_file_format_name] [ ,<rej...
syntaxsql 复制 CREATE EXTERNAL TABLE { [ [ database_name . [ schema_name ] . ] | schema_name . ] table_name } [ (column_name [ , ...n ] ) ] WITH ( LOCATION = 'hdfs_folder' | '<prefix>://<path>[:<port>]' , DATA_SOURCE = external_data_source_name , FILE_FORMAT ...
= 2) ereport(ERROR, (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION), errmsg("invalid input syntax for complex: \"%s\"", str))); result = (Complex *) palloc(sizeof(Complex)); result->x = x; result->y = y; PG_RETURN_POINTER(result); } --定义output函数: PG_FUNCTION_INFO_V1(...
Delta table syntaxsql -- Create an external file format for DELIMITED (CSV/TSV) files.CREATEEXTERNALFILEFORMATfile_format_nameWITH(FORMAT_TYPE=DELIMITEDTEXT[ ,FORMAT_OPTIONS(<format_options>[ ,...n ] ) ] [ ,DATA_COMPRESSION= {'org.apache.hadoop.io.compress.GzipCodec'} ]);<format_options>...
Syntax DDL Syntax Overview ALTER DATABASE ALTER FOREIGN TABLE (GDS Import and Export) ALTER FOREIGN TABLE (for HDFS or OBS) ALTER FOREIGN TABLE (SQL on other GaussDB(DWS)) ALTER FUNCTION ALTER GROUP ALTER INDEX ALTER LARGE OBJECT ALTER REDACTION POLICY ALTER RESOURCE POOL ALTER ROLE ALTER ROW...
Delta table syntaxsql -- Create an external file format for DELIMITED (CSV/TSV) files.CREATEEXTERNALFILEFORMATfile_format_nameWITH(FORMAT_TYPE=DELIMITEDTEXT[ ,FORMAT_OPTIONS(<format_options>[ ,...n ] ) ] [ ,DATA_COMPRESSION= {'org.apache.hadoop.io.compress.GzipCodec'} ]);<format_options>...