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data_type.rs
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data_type.rs
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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#[cfg(not(feature = "std"))]
use alloc::{boxed::Box, string::String, vec::Vec};
use core::fmt;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
use crate::ast::ObjectName;
use super::value::escape_single_quote_string;
/// SQL data types
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum DataType {
/// Fixed-length character type e.g. CHAR(10)
Char(Option<u64>),
/// Variable-length character type e.g. VARCHAR(10)
Varchar(Option<u64>),
/// Variable-length character type e.g. NVARCHAR(10)
Nvarchar(Option<u64>),
/// Uuid type
Uuid,
/// Large character object e.g. CLOB(1000)
Clob(u64),
/// Fixed-length binary type e.g. BINARY(10)
Binary(u64),
/// Variable-length binary type e.g. VARBINARY(10)
Varbinary(u64),
/// Large binary object e.g. BLOB(1000)
Blob(u64),
/// Decimal type with optional precision and scale e.g. DECIMAL(10,2)
Decimal(Option<u64>, Option<u64>),
/// Floating point with optional precision e.g. FLOAT(8)
Float(Option<u64>),
/// Tiny integer with optional display width e.g. TINYINT or TINYINT(3)
TinyInt(Option<u64>),
/// Unsigned tiny integer with optional display width e.g. TINYINT UNSIGNED or TINYINT(3) UNSIGNED
UnsignedTinyInt(Option<u64>),
/// Small integer with optional display width e.g. SMALLINT or SMALLINT(5)
SmallInt(Option<u64>),
/// Unsigned small integer with optional display width e.g. SMALLINT UNSIGNED or SMALLINT(5) UNSIGNED
UnsignedSmallInt(Option<u64>),
/// Integer with optional display width e.g. INT or INT(11)
Int(Option<u64>),
/// Unsigned integer with optional display width e.g. INT UNSIGNED or INT(11) UNSIGNED
UnsignedInt(Option<u64>),
/// Big integer with optional display width e.g. BIGINT or BIGINT(20)
BigInt(Option<u64>),
/// Unsigned big integer with optional display width e.g. BIGINT UNSIGNED or BIGINT(20) UNSIGNED
UnsignedBigInt(Option<u64>),
/// Floating point e.g. REAL
Real,
/// Double e.g. DOUBLE PRECISION
Double,
/// Boolean
Boolean,
/// Date
Date,
/// Time
Time,
/// Datetime
Datetime,
/// Timestamp
Timestamp,
/// Interval
Interval,
/// Regclass used in postgresql serial
Regclass,
/// Text
Text,
/// String
String,
/// Bytea
Bytea,
/// Custom type such as enums
Custom(ObjectName),
/// Arrays
Array(Box<DataType>),
/// Enums
Enum(Vec<String>),
/// Set
Set(Vec<String>),
}
impl fmt::Display for DataType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
DataType::Char(size) => format_type_with_optional_length(f, "CHAR", size, false),
DataType::Varchar(size) => {
format_type_with_optional_length(f, "CHARACTER VARYING", size, false)
}
DataType::Nvarchar(size) => {
format_type_with_optional_length(f, "NVARCHAR", size, false)
}
DataType::Uuid => write!(f, "UUID"),
DataType::Clob(size) => write!(f, "CLOB({})", size),
DataType::Binary(size) => write!(f, "BINARY({})", size),
DataType::Varbinary(size) => write!(f, "VARBINARY({})", size),
DataType::Blob(size) => write!(f, "BLOB({})", size),
DataType::Decimal(precision, scale) => {
if let Some(scale) = scale {
write!(f, "NUMERIC({},{})", precision.unwrap(), scale)
} else {
format_type_with_optional_length(f, "NUMERIC", precision, false)
}
}
DataType::Float(size) => format_type_with_optional_length(f, "FLOAT", size, false),
DataType::TinyInt(zerofill) => {
format_type_with_optional_length(f, "TINYINT", zerofill, false)
}
DataType::UnsignedTinyInt(zerofill) => {
format_type_with_optional_length(f, "TINYINT", zerofill, true)
}
DataType::SmallInt(zerofill) => {
format_type_with_optional_length(f, "SMALLINT", zerofill, false)
}
DataType::UnsignedSmallInt(zerofill) => {
format_type_with_optional_length(f, "SMALLINT", zerofill, true)
}
DataType::Int(zerofill) => format_type_with_optional_length(f, "INT", zerofill, false),
DataType::UnsignedInt(zerofill) => {
format_type_with_optional_length(f, "INT", zerofill, true)
}
DataType::BigInt(zerofill) => {
format_type_with_optional_length(f, "BIGINT", zerofill, false)
}
DataType::UnsignedBigInt(zerofill) => {
format_type_with_optional_length(f, "BIGINT", zerofill, true)
}
DataType::Real => write!(f, "REAL"),
DataType::Double => write!(f, "DOUBLE"),
DataType::Boolean => write!(f, "BOOLEAN"),
DataType::Date => write!(f, "DATE"),
DataType::Time => write!(f, "TIME"),
DataType::Datetime => write!(f, "DATETIME"),
DataType::Timestamp => write!(f, "TIMESTAMP"),
DataType::Interval => write!(f, "INTERVAL"),
DataType::Regclass => write!(f, "REGCLASS"),
DataType::Text => write!(f, "TEXT"),
DataType::String => write!(f, "STRING"),
DataType::Bytea => write!(f, "BYTEA"),
DataType::Array(ty) => write!(f, "{}[]", ty),
DataType::Custom(ty) => write!(f, "{}", ty),
DataType::Enum(vals) => {
write!(f, "ENUM(")?;
for (i, v) in vals.iter().enumerate() {
if i != 0 {
write!(f, ", ")?;
}
write!(f, "'{}'", escape_single_quote_string(v))?;
}
write!(f, ")")
}
DataType::Set(vals) => {
write!(f, "SET(")?;
for (i, v) in vals.iter().enumerate() {
if i != 0 {
write!(f, ", ")?;
}
write!(f, "'{}'", escape_single_quote_string(v))?;
}
write!(f, ")")
}
}
}
}
fn format_type_with_optional_length(
f: &mut fmt::Formatter,
sql_type: &'static str,
len: &Option<u64>,
unsigned: bool,
) -> fmt::Result {
write!(f, "{}", sql_type)?;
if let Some(len) = len {
write!(f, "({})", len)?;
}
if unsigned {
write!(f, " UNSIGNED")?;
}
Ok(())
}