76 lines
2.5 KiB
SQL
76 lines
2.5 KiB
SQL
-- Syntax
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-- CREATE TABLE [ IF NOT EXISTS ] table_identifier
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-- [ ( col_name1 col_type1 [ COMMENT col_comment1 ], ... ) ]
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-- USING data_source
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-- [ OPTIONS ( key1=val1, key2=val2, ... ) ]
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-- [ PARTITIONED BY ( col_name1, col_name2, ... ) ]
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-- [ CLUSTERED BY ( col_name3, col_name4, ... )
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-- [ SORTED BY ( col_name [ ASC | DESC ], ... ) ]
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-- INTO num_buckets BUCKETS ]
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-- [ LOCATION path ]
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-- [ COMMENT table_comment ]
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-- [ TBLPROPERTIES ( key1=val1, key2=val2, ... ) ]
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-- [ AS select_statement ]
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--Use data source
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CREATE TABLE student (id INT, name STRING, age INT) USING CSV;
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CREATE TABLE IF NOT EXISTS student (id INT, name STRING, age INT) USING CSV;
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--Use data from another table
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CREATE TABLE student_copy USING CSV AS SELECT * FROM student;
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--Omit the USING clause, which uses the default data source (parquet by default)
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CREATE TABLE student (id INT, name STRING, age INT);
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--Use parquet data source with parquet storage options
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--The columns 'id' and 'name' enable the bloom filter during writing parquet file,
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--column 'age' does not enable
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CREATE TABLE student_parquet(id INT, name STRING, age INT) USING PARQUET
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OPTIONS (
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'parquet.bloom.filter.enabled'='true',
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'parquet.bloom.filter.enabled#age'='false'
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);
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--Specify table comment and properties
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CREATE TABLE student (id INT, name STRING, age INT) USING CSV
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LOCATION 'file:/temp/spark-warehouse/new_inventory.db'
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COMMENT 'this is a comment'
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TBLPROPERTIES ('foo'='bar');
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--Specify table comment and properties with different clauses order
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CREATE TABLE student (id INT, name STRING, age INT) USING CSV
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TBLPROPERTIES ('foo'='bar')
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COMMENT 'this is a comment';
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--Create partitioned and bucketed table
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CREATE TABLE student (id INT, name STRING, age INT)
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USING CSV
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PARTITIONED BY (age)
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CLUSTERED BY (Id)
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SORTED BY (Id ASC) INTO 4 buckets;
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--Create partitioned and bucketed table through CTAS
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CREATE TABLE student_partition_bucket
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USING parquet
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PARTITIONED BY (age)
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CLUSTERED BY (id) INTO 4 buckets
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AS SELECT * FROM student;
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--Create bucketed table through CTAS and CTE
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CREATE TABLE student_bucket
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USING parquet
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CLUSTERED BY (id) INTO 4 buckets (
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WITH tmpTable AS (
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SELECT * FROM student WHERE id > 100
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)
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SELECT * FROM tmpTable
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);
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-- dtstack SparkSQL/HiveSQL lifecycle
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CREATE TABLE IF NOT EXISTS t1 (
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id INT COMMENT '索引',
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name STRING COMMENT '姓名',
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age SMALLINT COMMENT '年龄'
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) COMMENT "t1表" lifecycle 29;
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