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44 lines
4.5 KiB
C++
44 lines
4.5 KiB
C++
#pragma once
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#include <Core/Field.h>
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namespace DB
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{
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/**
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Binary encoding for Fields:
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|--------------------------|--------------------------------------------------------------------------------------------------------------------------------|
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| Field type | Binary encoding |
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|--------------------------|--------------------------------------------------------------------------------------------------------------------------------|
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| `Null` | `0x00` |
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| `UInt64` | `0x01<var_uint_value>` |
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| `Int64` | `0x02<var_int_value>` |
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| `UInt128` | `0x03<uint128_little_endian_value>` |
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| `Int128` | `0x04<int128_little_endian_value>` |
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| `UInt128` | `0x05<uint128_little_endian_value>` |
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| `Int128` | `0x06<int128_little_endian_value>` |
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| `Float64` | `0x07<float64_little_endian_value>` |
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| `Decimal32` | `0x08<var_uint_scale><int32_little_endian_value>` |
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| `Decimal64` | `0x09<var_uint_scale><int64_little_endian_value>` |
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| `Decimal128` | `0x0A<var_uint_scale><int128_little_endian_value>` |
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| `Decimal256` | `0x0B<var_uint_scale><int256_little_endian_value>` |
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| `String` | `0x0C<var_uint_size><data>` |
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| `Array` | `0x0D<var_uint_size><value_encoding_1>...<value_encoding_N>` |
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| `Tuple` | `0x0E<var_uint_size><value_encoding_1>...<value_encoding_N>` |
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| `Map` | `0x0F<var_uint_size><key_encoding_1><value_encoding_1>...<key_endoding_N><value_encoding_N>` |
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| `IPv4` | `0x10<uint32_little_endian_value>` |
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| `IPv6` | `0x11<uint128_little_endian_value>` |
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| `UUID` | `0x12<uuid_value>` |
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| `Bool` | `0x13<bool_value>` |
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| `Object` | `0x14<var_uint_size><var_uint_key_size_1><key_data_1><value_encoding_1>...<var_uint_key_size_N><key_data_N><value_encoding_N>` |
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| `AggregateFunctionState` | `0x15<var_uint_name_size><name_data><var_uint_data_size><data>` |
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| `Negative infinity` | `0xFE` |
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| `Positive infinity` | `0xFF` |
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|--------------------------|--------------------------------------------------------------------------------------------------------------------------------|
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*/
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void encodeField(const Field &, WriteBuffer & buf);
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Field decodeField(ReadBuffer & buf);
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}
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