They are corresponding to arrow::Type::type values.
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A degenerate NULL type represented as 0 bytes/bits. |
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A boolean value represented as 1-bit. |
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Little-endian 8-bit unsigned integer. |
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Little-endian 8-bit signed integer. |
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Little-endian 16-bit unsigned integer. |
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Little-endian 16-bit signed integer. |
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Little-endian 32-bit unsigned integer. |
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Little-endian 32-bit signed integer. |
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Little-endian 64-bit unsigned integer. |
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Little-endian 64-bit signed integer. |
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2-byte floating point value. |
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4-byte floating point value. |
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8-byte floating point value. |
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UTF-8 variable-length string. |
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Variable-length bytes (no guarantee of UTF-8-ness). |
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Fixed-size binary. Each value occupies the same number of bytes. |
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int32 days since the UNIX epoch. |
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int64 milliseconds since the UNIX epoch. |
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Exact timestamp encoded with int64 since UNIX epoch. Default unit millisecond. |
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Exact time encoded with int32, supporting seconds or milliseconds |
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Exact time encoded with int64, supporting micro- or nanoseconds |
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YEAR_MONTH interval in SQL style. |
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DAY_TIME interval in SQL style. |
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Precision- and scale-based decimal type with 128-bit. Storage type depends on the parameters. |
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Precision- and scale-based decimal type with 256-bit. Storage type depends on the parameters. |
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A list of some logical data type. |
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Struct of logical types. |
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Sparse unions of logical types. |
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Dense unions of logical types. |
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Dictionary aka Category type. |
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A repeated struct logical type. |
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Custom data type, implemented by user. |
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Fixed size list of some logical type. |
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Measure of elapsed time in either seconds, milliseconds, microseconds or nanoseconds. |
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64bit offsets UTF-8 variable-length string. |
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64bit offsets Variable-length bytes (no guarantee of UTF-8-ness). |
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A list of some logical data type with 64-bit offsets. |
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MONTH_DAY_NANO interval in SQL style. |
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Run-end encoded data. |