risingwave_frontend/utils/
data_type.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use risingwave_common::types::DataType;
16use risingwave_sqlparser::ast::{DataType as AstDataType, StructField};
17
18#[easy_ext::ext(DataTypeToAst)]
19impl DataType {
20    /// Convert the data type to its AST representation.
21    pub fn to_ast(&self) -> AstDataType {
22        match self {
23            DataType::Boolean => AstDataType::Boolean,
24            DataType::Int16 => AstDataType::SmallInt,
25            DataType::Int32 => AstDataType::Int,
26            DataType::Int64 => AstDataType::BigInt,
27            DataType::Float32 => AstDataType::Real,
28            DataType::Float64 => AstDataType::Double,
29            // Note: we don't currently support precision and scale for decimal
30            DataType::Decimal => AstDataType::Decimal(None, None),
31            DataType::Date => AstDataType::Date,
32            DataType::Varchar => AstDataType::Varchar,
33            DataType::Time => AstDataType::Time(false),
34            DataType::Timestamp => AstDataType::Timestamp(false),
35            DataType::Timestamptz => AstDataType::Timestamp(true),
36            DataType::Interval => AstDataType::Interval,
37            DataType::Jsonb => AstDataType::Jsonb,
38            DataType::Bytea => AstDataType::Bytea,
39            DataType::List(item_ty) => AstDataType::Array(Box::new(item_ty.to_ast())),
40            DataType::Struct(fields) => {
41                let fields = fields
42                    .iter()
43                    .map(|(name, ty)| StructField {
44                        name: name.into(),
45                        data_type: ty.to_ast(),
46                    })
47                    .collect();
48                AstDataType::Struct(fields)
49            }
50            DataType::Int256 => AstDataType::Custom(vec!["rw_int256".into()].into()),
51            DataType::Map(map) => {
52                AstDataType::Map(Box::new((map.key().to_ast(), map.value().to_ast())))
53            }
54            DataType::Serial => unreachable!("serial type should not be user-defined"),
55        }
56    }
57}
risingwave_frontend/utils/data_type.rs

risingwave_frontend/utils/
data_type.rs
