Snowpark Migration Accelerator: Verwendung¶
Beschreibung¶
Der USING-Befehl in Spark gibt an, welches Dateiformat bei der Erstellung einer Tabelle verwendet werden soll. Gängige Formate sind CSV, JSON und AVRO. Ausführlichere Informationen über den USING-Befehl zur Erstellung einer Tabelle finden Sie in der Databricks-Dokumentation.
Syntax¶
CREATE TABLE [IF NOT EXISTS] [db_name.]table_name
[(col_name1 col_type1 [COMMENT col_comment1], ...)]
USING data_source
[OPTIONS (key1 [ = ] val1, key2 [ = ] val2, ...)]
[PARTITIONED BY (col_name1, col_name2, ...)]
[CLUSTERED BY (col_name3, col_name4, ...) INTO num_buckets BUCKETS]
[LOCATION path]
[COMMENT table_comment]
[TBLPROPERTIES (key1 [ = ] val1, key2 [ = ] val2, ...)]
[AS select_statement]
Beispielhafte Quellcode-Muster¶
The USING
data source statement is not supported in Snowflake. During migration, this statement will be commented out and marked with an Error, Warning, and Issue (EWI) message indicating that it is unsupported.
Beispieldaten¶
CREATE TABLE table1
(
id INTEGER
) USING DELTA;
CREATE TABLE table1
(
id INTEGER
) /*** MSC-WARNING - MSCEWI# - SNOWFLAKE DOES NOT SUPPORT USING STATEMENT ***/
-- USING DELTA;
Bekannte Probleme¶
Snowflake unterstützt in SQL-Anweisungen nicht die USING-Quelldatenklausel.