,MAX(photourl) from (select b.PhotoAlbumID,b.PhotoUrl,a.ID,a.PhotoAlbumName,a.Describe from PhotoAlbum as a inner join Photos as b on a.ID=b.PhotoAlbumID) as cgroup by PhotoAlbumName,Describe,PhotoAlbumID linq: var photolist2 = (from a in db.PhotoAlbum join b in db.Photos on a.ID equals b.PhotoAlbumID group new { a, b } by new { a.PhotoAlbu...
C#tinyint bytesmallint Int16char stringint int SQLServer------数据类型在C#中的转换标签：pre char sqlserver bsp str har -- log color 本文系统来源：http://www.cnblogs.com/tianhengblogs/p/6322294.html
DB2/400 C C# C/C#数据范围 NUMBER Float(n)/REAL/DOUBLE double double1.7E +/- 308 (15 digits)NUMBER(p)p<=4 SAMLLINTDECIMAL(p)NUMBER(p) short Int16–32,768 to 32,767 NUMBER(5)NUMBER(p)5<=p<=9 INTEGERDECIMAL(p)NUMBER(p) int Int32–2,147,483,648 to 2,147,483,647 NUMBER(10)NUMBER(p)10<=p<=19 BIGINTDECIMAL(p)NUMBER(p) __int64 Int64–9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 NUMBER(19)NUMBER(...
C#C#取值SQL ServerSQL Server取值System.DateTime samlltime System.Object variant (二) C#与SQL Server 2008（或以上版本）：C#C#取值SQL ServerSQL Server取值System.Booleantrue/falsebit1/0System.SByte-128~127 System.Byte0~255tinyint0~255System.Int16-32768~32767smallint-32768~32767System.UInt160~65535 System.Int32-2147483648~2147483647int-2147483648~2147483647System.UInt320~4294967295 System.Int...
SQL Server 2000C#CodeSmith数据类型取值范围数据类型取值范围空值代替值数据类型bigint-2^63 (-9,223,372,036,854,775,807) 至 2^63-1 (9,223,372,036,854,775,807)Int64-9,223,372,036,854,775,808；即十六进制的 0x8000000000000000至9,223,372,036,854,775,807；即十六进制的 0x7FFFFFFFFFFFFFFFInt64.MinValueInt64binary固定长度的 n 个字节二进制数据。N 必须从 1 到 8,000。存储空间大小为 n+4 字节。Byte[] nullBinarybit...
MaterialStruct readonly,//此处注意此时后面必须有readonly,否则会报错,http://www.mamicode.com/info-detail-1485151.html当传入多个参数时，可以用Dictionary<string, object>，把参数都包含其中，如：parmWithValue = new Dictionary<string, object>()//http://www.cnblogs.com/txw1958/archive/2012/11/07/csharp-dictionary.html{{"paravalue_delete" ,datadelete_origin},{"paravalue_update" ,dataupdate},{"@paravalue_i...
bool UserAmountChange(Dictionary<string, long> fee, Dictionary<string, long> recharge){var f = GetRechargeTypeArray(fee);var r = GetRechargeTypeArray(recharge);using (OracleConnection conn = this.CreateConnection())using (OracleCommand cmd = conn.CreateCommand()){conn.Open();cmd.CommandText = "Proc_HotStandbyQuotaChange";cmd.CommandType = CommandType.StoredProcedure;var op = new OracleParameter { ...
数据库中字段类型对应C#中的数据类型： 数据库 C#程序 int int32 text string bigint int64 binary System.Byte[] bit Boolean char string datetime System.DateTime decimal System.Decimal float System.Double image System.Byte[] money System.De...
or replace procedure SQL_WX_SP(out_return out sys_refcursor) is beginopen out_return for ‘select * from wx_sp‘; end;C#代码：（这是调用的方法，out_return 这个是和存储过程中的游标参数对应的，类型是OracleDbType.RefCursor。SQL_WX_SP 是存储过程名称） public DataTable function(){try{OracleParameter[] par ={new OracleParameter("out_return", OracleDbType.RefCursor)};par[0].Direction = ParameterDirect...
// SqlDbType转换为C#数据类型 public static Type SqlType2CsharpType(SqlDbType sqlType) { switch (sqlType) {case SqlDbType.BigInt:return typeof(Int64);case SqlDbType.Binary:return typeof(Object);case SqlDbType.Bit:return typeof(Boolean);case SqlDbType.Char:return typeof(String);case SqlDbType.DateTime:return typeof(DateTime);case SqlDbType.Decimal:return typeof(Decimal);case SqlDbType.Float:return t...
/// <summary> /// 数据库中与c#中的数据类型对照 /// </summary> /// <param name="type"></param> /// <returns></returns> private string changetocsharptype(string type) { string reval=string.empty; switch(type.tolower()) { case "int": reval= "int32"; break; case "text": reval= "string"; break; case "bigint": reval= "int64"; break; case "binary": reva...
bigintDECIMALbigintbinary(n)BINARY(n)bytea(n)bitBITboolean, boolchar(n)CHAR(n)char(n)datetimeDATETIMEtimestamp(date, time)decimalDECIMALdecimalfloatFLOATreal, float4imageIMAGEbyteaintINTinteger, int, int4moneyCURRENCYdecimalnchar(n)NCHAR(n)char(n)ntextLONGTEXTtextnumericDECIMALnumericnvarchar(n)NCHAR VARYING(n)varchar(n)realREALrealsmalldatetimeDATETIMEtimestamp(date, time)smallintSMALLINTsmallint...
declare @TableName sysname = ‘T_CRM_Customer‘declare @Result varchar(max) = ‘/// <summary>/// ‘ + @TableName + ‘ /// </summary>public class ‘ + @TableName + ‘{‘ select @Result = @Result + ‘ /// <summary> /// ‘ + CONVERT(NVARCHAR(500), ISNULL(ColName, ‘无‘)) + ‘ /// </summary> public ‘ + ColumnType + NullableSign + ‘ ‘ + ColumnName + ‘ { get; set; }‘fro...
SQL Server 类型JDBC 类型 (java.sql.Types)Java 语言类型bigintBIGINTlongtimestamp binaryBINARYbyte[]bitBITbooleancharCHARStringdecimal money smallmoneyDECIMALjava.math.BigDecimalfloatDOUBLEdoubleintINTEGERintimage varbinary(max)LONGVARBINARYbyte[]varchar(max) textLONGVARCHARStringncharCHAR NCHAR (Java SE 6.0)StringnvarcharVARCHAR NVARCHAR (Java SE 6.0)Stringnvarchar(max) ntextLONGVARCHAR LONGNVARCHA...
string DataTypeToCType(string dataType){dataType = dataType.ToLower();string retType = "";if (dataType.Equals("text") || dataType.Equals("varchar") || dataType.Equals("char") || dataType.Equals("nvarchar") || dataType.Equals("nchar"))return "string";if (dataType.Equals("int"))return "int"; //if (dataType.Equals("bigint")) // return "Int64"; if (dataType.Equal...