Release Notes

Product Introduction

Product Overview

Benefits

Use Cases

Architecture

Regions

Purchase Guide

Product Pricing

Payment Overdue

Getting Started

Basic Concepts

Creating Cluster

Creating Table Group

Creating Table

Get Connection Information

Accessing TcaplusDB

Operation Guide

Managing Cluster and Table Group

Managing Table

Monitoring and Alarming

Access Management

Tag

Task List

TcaplusDB Client

Accessing by Client Tool

Client Tool Commands

TcaplusDB SDK

Release History

SDK Download

C++ SDK API

TcaplusDB Error Codes

SDK Installation

Directions for Protobuf Table SDK for C++

Directions for TDR Table SDK for C++

TcaplusDB RESTful APIs

Description

Java

PHP

Python

Downloading RESTful API Samples in Multiple Languages

Practical Tutorial

Best Practice for Table Structure Design

Best Practice for Database Interaction

FAQs

Database Features

Database Use

Database Principles

API Documentation

History

Introduction

API Category

Making API Requests

Table Group APIs

Other APIs

Table APIs

Cluster APIs

Data Types

Error Codes

Service Agreement

Service Level Agreement

Glossary

Data Types

PDF

フォーカスモード

フォントサイズ

最終更新日: 2024-12-04 10:12:05

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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フィードバック

.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.

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TencentDB for TcaplusDB

Data Types

Mapping between proto3 and Data Types in Programing Languages

Mapping between proto2 and Data Types in Programing Languages

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