feat(type): add support for double precision (#153)

* feat(type): add support for double precision

* code format

* remove DoublePrecision LogicalType

Author: crwen

src/types/mod.rs

@@ -305,7 +305,9 @@ impl TryFrom<sqlparser::ast::DataType> for LogicalType {
                 Ok(LogicalType::Varchar(len.map(|len| len.length as u32)))
             }
             sqlparser::ast::DataType::Float(_) => Ok(LogicalType::Float),
-            sqlparser::ast::DataType::Double => Ok(LogicalType::Double),
+            sqlparser::ast::DataType::Double | sqlparser::ast::DataType::DoublePrecision => {
+                Ok(LogicalType::Double)
+            }
             sqlparser::ast::DataType::TinyInt(_) => Ok(LogicalType::Tinyint),
             sqlparser::ast::DataType::UnsignedTinyInt(_) => Ok(LogicalType::UTinyint),
             sqlparser::ast::DataType::SmallInt(_) => Ok(LogicalType::Smallint),

tests/slt/sql_2016/E011_02.slt

@@ -1,8 +1,7 @@
-# E011-02: REAL, DOUBLE PRECISON, and FLOAT data types
+# E011-02: REAL, DOUBLE PRECISION, and FLOAT data types
 
-# TODO: DOUBLE PRECISION
-# statement ok
-# CREATE TABLE TABLE_E011_02_01_01 ( ID INT PRIMARY KEY, A DOUBLE PRECISION )
+statement ok
+CREATE TABLE TABLE_E011_02_01_01 ( ID INT PRIMARY KEY, A DOUBLE PRECISION )
 
 statement ok
 CREATE TABLE TABLE_E011_02_01_02 ( ID INT PRIMARY KEY, A FLOAT ( 2 ) )