Data Types | Ignite Documentation

Ignite Summit 2025 — Watch on demand 

Apache Ignite logo
Edit

Data Types

The page contains a list of SQL data types available in Ignite such as string, numeric, and date/time types.

Every SQL type is mapped to a programming language or driver specific type that is supported by Ignite natively.

BOOLEAN

Possible values: TRUE and FALSE.

Mapped to:

  • Java/JDBC: java.lang.Boolean

  • .NET/C#: bool

  • C/C++: bool

  • ODBC: SQL_BIT

BIGINT

Possible values: [-9223372036854775808, 9223372036854775807].

Mapped to:

  • Java/JDBC: java.lang.Long

  • .NET/C#: long

  • C/C++: int64_t

  • ODBC: SQL_BIGINT

DECIMAL

Possible values: Data type with fixed precision and scale.

Mapped to:

  • Java/JDBC: java.math.BigDecimal

  • .NET/C#: decimal

  • C/C++: ignite::Decimal

  • ODBC: SQL_DECIMAL

DOUBLE

Possible values: A floating point number.

Mapped to:

  • Java/JDBC: java.lang.Double

  • .NET/C#: double

  • C/C++: double

  • ODBC: SQL_DOUBLE

INT

Possible values: [-2147483648, 2147483647].

Mapped to:

  • Java/JDBC: java.lang.Integer

  • .NET/C#: int

  • C/C++: int32_t

  • ODBC: SQL_INTEGER

REAL

Possible values: A single precision floating point number.

Mapped to:

  • Java/JDBC: java.lang.Float

  • .NET/C#: float

  • C/C++: float

  • ODBC: SQL_FLOAT

SMALLINT

Possible values: [-32768, 32767].

Mapped to:

  • Java/JDBC: java.lang.Short

  • .NET/C#: short

  • C/C++: int16_t

  • ODBC: SQL_SMALLINT

TINYINT

Possible values: [-128, 127].

Mapped to:

  • Java/JDBC: java.lang.Byte

  • .NET/C#: sbyte

  • C/C++: int8_t

  • ODBC: SQL_TINYINT

CHAR

Possible values: A unicode String. This type is supported for compatibility with other databases and older applications.

Mapped to:

  • Java/JDBC: java.lang.String

  • .NET/C#: string

  • C/C++: std::string

  • ODBC: SQL_CHAR

VARCHAR

Possible values: A Unicode String.

Mapped to:

  • Java/JDBC: java.lang.String

  • .NET/C#: string

  • C/C++: std::string

  • ODBC: SQL_VARCHAR

DATE

Possible values: The date data type. The format is yyyy-MM-dd.

Mapped to:

Java/JDBC: java.sql.Date - .NET/C#: N/A - C/C++: ignite::Date - ODBC: SQL_TYPE_DATE

Note
 Use the TIMESTAMP type instead of DATE whenever possible. The DATE type is serialized/deserialized very inefficiently resulting in performance degradation.

TIME

Possible values: The time data type. The format is hh:mm:ss.

Mapped to:

  • Java/JDBC: java.sql.Time

  • .NET/C#: N/A

  • C/C++: ignite::Time

  • ODBC: SQL_TYPE_TIME

TIMESTAMP

Possible values: The timestamp data type. The format is yyyy-MM-dd hh:mm:ss[.nnnnnnnnn].

Mapped to:

  • Java/JDBC: java.sql.Timestamp

  • .NET/C#: System.DateTime

  • C/C++: ignite::Timestamp

  • ODBC: SQL_TYPE_TIMESTAMP

BINARY

Possible values: Represents a byte array.

Mapped to:

  • Java/JDBC: byte[]

  • .NET/C#: byte[]

  • C/C++: int8_t[]

  • ODBC: SQL_BINARY

GEOMETRY

Possible values: A spatial geometry type, based on the com.vividsolutions.jts library. Normally represented in a textual format using the WKT (well-known text) format.

Mapped to:

  • Java/JDBC: Types from the com.vividsolutions.jts package.

  • .NET/C#: N/A

  • C/C++: N/A

  • ODBC: N/A

UUID

Possible values: Universally unique identifier. This is a 128 bit value.

Mapped to:

  • Java/JDBC: java.util.UUID

  • .NET/C#: System.Guid

  • C/C++: ignite::Guid

  • ODBC: SQL_GUID

© 2022 The Apache Software Foundation.
Apache, Apache Ignite, the Apache feather and the Apache Ignite logo are either registered trademarks or trademarks of The Apache Software Foundation.