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TencentDB for TcaplusDB
    Documentation
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    Data Types

    Last updated: 2023-12-20 16:40:36
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      TencentDB for TcaplusDB supports Protocol Buffers data types.

      Mapping between proto3 and Data Types in Programing Languages

      .proto
      C++
      Java
      Python
      Go
      Ruby
      C#
      PHP
      Dart
      Notes
      double
      double
      double
      float
      float64
      float
      double
      float
      double
      -
      float
      float
      float
      float
      float32
      float
      float
      float
      double
      -
      int32
      int32
      int
      int
      int32
      fixnum/
      bignum
      (as required)
      int
      integer
      int
      Uses variable-length encoding.
      Inefficient for encoding negative numbers. If your field is likely to have negative values, use sint32 instead.
      int64
      int64
      long
      int/
      long
      int64
      bignum
      long
      integer/string
      Int64
      Uses variable-length encoding.
      Inefficient for encoding negative numbers. If your field is likely to have negative values, use sint64 instead.
      uint32
      uint32
      int
      int/
      long
      uint32
      fixnum/
      bignum
      (as required)
      uint
      integer
      int
      Uses variable-length encoding.
      uint64
      uint64
      long
      int/
      long
      uint64
      bignum
      ulong
      integer/string
      Int64
      Uses variable-length encoding.
      sint32
      int32
      int
      int
      int32
      fixnum/
      bignum
      (as required)
      int
      integer
      int
      Uses variable-length encoding.
      sint64
      int64
      long
      int/
      long
      int64
      bignum
      long
      integer/string
      Int64
      Uses variable-length encoding.
      Signed int value. These more efficiently encode negative numbers than regular int32s.
      fixed32
      uint32
      int
      int/
      long
      uint32
      fixnum/
      bignum
      (as required)
      uint
      integer
      int
      Always four bytes.
      More efficient than uint32 if values are generally greater than 2^28.
      fixed64
      uint64
      long
      int/
      long
      uint64
      bignum
      ulong
      integer/string
      Int64
      Always eight bytes.
      More efficient than uint64 if values are generally greater than 2^56.
      sfixed32
      int32
      int
      int
      int32
      fixnum/
      bignum
      (as required)
      int
      integer
      int
      Always four bytes.
      sfixed64
      int64
      long
      int/
      long
      int64
      bignum
      long
      integer/string
      Int64
      Always eight bytes.
      bool
      bool
      boolean
      bool
      bool
      trueClass/
      falseClass
      bool
      boolean
      bool
      -
      string
      string
      String
      str/
      unicode
      string
      string
      (UTF -8)
      string
      string
      string
      A string must always contain UTF-8 encoded or 7-bit ASCII text, and cannot be longer than 2^32.
      bytes
      string
      ByteString
      str
      byte
      string
      (ASCII-8BIT)
      bytestring
      string
      -
      May contain any arbitrary sequence of bytes no longer than 2^32.

      Mapping between proto2 and Data Types in Programing Languages

      .proto
      C++
      Java
      Python
      Go
      Notes
      double
      double
      double
      float
      *float64
      -
      float
      float
      float
      float
      *float32
      -
      int32
      int32
      int
      int
      *int32
      Uses variable-length encoding. Inefficient for encoding negative numbers. If your field is likely to have negative values, use sint32 instead.
      int64
      int64
      long
      int/long
      *int64
      Uses variable-length encoding. Inefficient for encoding negative numbers. If your field is likely to have negative values, use sint64 instead.
      uint32
      uint32
      int
      int/long
      *uint32
      Uses variable-length encoding.
      uint64
      uint64
      long
      int/long
      *uint64
      Uses variable-length encoding.
      sint32
      int32
      int
      int
      *int32
      Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.
      sint64
      int64
      long
      int/long
      *int64
      Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.
      fixed32
      uint32
      int
      int/long
      *uint32
      Always four bytes. More efficient than uint32 if values are generally greater than 2^28.
      fixed64
      uint64
      long
      int/long
      *uint64
      Always eight bytes. More efficient than uint64 if values are generally greater than 2^56.
      sfixed32
      int32
      int
      int
      *int32
      Always four bytes.
      sfixed64
      int64
      long
      int/long
      *int64
      Always eight bytes.
      bool
      bool
      boolean
      bool
      *bool
      -
      string
      string
      String
      unicode(Python 2)
      or
      str(Python 3)
      *string
      A string must always contain UTF-8 encoded or 7-bit ASCII text.
      bytes
      string
      ByteString
      bytes
      byte
      May contain any arbitrary sequence of bytes.
      
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