初始化提交
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UTS_Core/Database/Mysql/DataParam.vb
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222
UTS_Core/Database/Mysql/DataParam.vb
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Imports System.Text
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Namespace Database.Mysql
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Public Class DataParam
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Enum DataTypeEnum
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'###############################数值类型#############################
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''' <summary>
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''' 1 byte,小整数值
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''' </summary>
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Tinyint
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''' <summary>
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''' 2 bytes,大整数值
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''' </summary>
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Smallint
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''' <summary>
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''' 3 bytes,大整数值
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''' </summary>
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Mediumint
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''' <summary>
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''' 4 bytes,大整数值
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''' </summary>
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Int
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''' <summary>
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''' 4 bytes,大整数值
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''' </summary>
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[Integer]
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''' <summary>
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''' 8 bytes,极大整数值
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''' </summary>
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Bigint
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''' <summary>
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''' 4 bytes,单精度浮点数值
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''' </summary>
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Float
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''' <summary>
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''' 8 bytes,双精度浮点数值
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''' </summary>
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[Double]
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'####################日期类型###############################
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''' <summary>
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''' 对DECIMAL(M,D) ,如果M>D,为M+2否则为D+2.小数值
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''' </summary>
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[Decimal]
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''' <summary>
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''' 3 bytes,日期值,YYYY-MM-DD
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''' </summary>
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[Date]
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''' <summary>
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''' 3 bytes,时间值或持续时间,HH:MM:SS
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''' </summary>
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Time
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''' <summary>
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''' 1 bytes,年份值,YYYY
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''' </summary>
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Year
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''' <summary>
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''' 8 bytes,混合日期和时间值,YYYY-MM-DD HH:MM:SS
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''' </summary>
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Datetime
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''' <summary>
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''' 4 bytes,混合日期和时间值,时间戳,YYYYMMDD HHMMSS
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''' </summary>
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Timestamp
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'####################字符类型###############################
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''' <summary>
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''' 0-255 bytes,定长字符串
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''' </summary>
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[Char]
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''' <summary>
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''' 0-65535 bytes,变长字符串
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''' </summary>
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Varchar
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''' <summary>
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''' 0-255 bytes,不超过 255 个字符的二进制字符串
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''' </summary>
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Tinyblob
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''' <summary>
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''' 0-255 bytes,短文本字符串
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''' </summary>
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Tinytext
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''' <summary>
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''' 0-65 535 bytes,二进制形式的长文本数据
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''' </summary>
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Blob
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''' <summary>
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''' 0-65 535 bytes,长文本数据
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''' </summary>
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Text
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''' <summary>
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''' 0-16 777 215 bytes,二进制形式的中等长度文本数据
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''' </summary>
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Mediumblob
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''' <summary>
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''' 0-16 777 215 bytes,中等长度文本数据
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''' </summary>
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Mediumtext
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''' <summary>
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''' 0-4 294 967 295 bytes,二进制形式的极大文本数据
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''' </summary>
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Longblob
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''' <summary>
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''' 0-4 294 967 295 bytes,极大文本数据
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''' </summary>
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Longtext
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End Enum
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''' <summary>
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''' 列名
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''' </summary>
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''' <returns></returns>
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Public Property ColumnName() As String
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''' <summary>
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''' 当前值
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''' </summary>
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''' <returns></returns>
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Public Property Value() As String
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''' <summary>
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''' 默认值
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''' </summary>
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''' <returns></returns>
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Public Property DefaultValue() As String
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''' <summary>
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''' 数据类型
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''' </summary>
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''' <returns></returns>
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Public Property DataType() As DataTypeEnum
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''' <summary>
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''' 数据类型长度
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''' </summary>
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''' <returns></returns>
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Public Property DataTypeLength() As Integer
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''' <summary>
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''' 数据类型是否带符号
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''' </summary>
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''' <returns></returns>
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Public Property IsUnsigned() As Boolean
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''' <summary>
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''' 是否允许为空
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''' </summary>
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''' <returns></returns>
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Public Property IsNull() As Boolean = True
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''' <summary>
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''' 是否自动增长
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''' </summary>
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''' <returns></returns>
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Public Property IsAutoIncrement() As Boolean
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''' <summary>
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''' 是否为主键
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''' </summary>
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''' <returns></returns>
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Public Property IsPrimaryKey() As Boolean
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Public Function ToAddColString() As String
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Dim sb As New StringBuilder
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sb.Append($"`{ColumnName}`")
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Select Case DataType
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Case DataTypeEnum.Varchar,DataTypeEnum.[Char]
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sb.Append($" {DataType}({DataTypeLength}) ")
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Case DataTypeEnum.Int
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sb.Append($" {DataType}")
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if IsUnsigned Then sb.Append($" Unsigned")
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If IsAutoIncrement Then sb.Append($" AUTO_INCREMENT")
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Case Else
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sb.Append($" {DataType}")
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End Select
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sb.Append(IIf(IsNull, " Default Null", " Not Null"))
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If IsPrimaryKey Then
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sb.Append($" PRIMARY KEY")
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End If
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Return sb.ToString()
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End Function
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End Class
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End Namespace
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13
UTS_Core/Database/Mysql/MysqlCmdHelper.vb
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13
UTS_Core/Database/Mysql/MysqlCmdHelper.vb
Normal file
@@ -0,0 +1,13 @@
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Imports System.Text
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Namespace Database.Mysql
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Public Class MysqlCmdHelper
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Inherits DbCmdHelper
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Sub New
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FiledSuffix = "`"c
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FiledPrefix = "`"c
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End Sub
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End Class
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End Namespace
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