PARSE()函数返回 SQL Server 中转换为所请求的数据类型的表达式的结果。基本语法是:PARSE ( string_value AS data_type [ USING culture ] ) string_value为nvarchar(4000) 值,表示要解析为指定数据类型的格式化值。string_value 必须为所请求的数据类型的表示形式,否则 PARSE 将引发错误。 data_type表示结果的所...
PARSE()函数返回 SQL Server 中转换为所请求的数据类型的表达式的结果。基本语法是:PARSE ( string_value AS data_type [ USING culture ] ) string_value为nvarchar(4000) 值,表示要解析为指定数据类型的格式化值。string_value 必须为所请求的数据类型的表示形式,否则 PARSE 将引发错误。data_type表示结果的所请...
Let’s illustrate with an example. Suppose we have the character string ‘123’ stored as text, but we want to convert it to an integer. Using the two functions, we get the following Transact-SQL statements: SELECTCAST('123'ASINT);SELECTCONVERT(INT,'123'); Copy Both return the exact sa...
Line 1 is converting a date data type to a string data type and line 2 converts a string data type to a date data type. SELECT CAST(GETDATE() AS CHAR(12)) AS DateStmp1; SELECT CAST('08/24/2020' AS DATE) AS DateStmp2; Results: The following conversion is not allowed: SELECT C...
MSSQL Cast Function: The CAST FUNCTION is used to convert an expression from one data type to another datatype
When the CAST or CONVERT functions output a character string, and they receive a character string input, the output has the same collation and collation label as the input. If the input isn't a character string, the output has the default collation of the database, and a collation label ...
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SELECTCAST('31 Dec 12'ASDATE)AS[First Date],CAST('Dec 12 1776 12:38AM'ASDATE)AS[Second Date],CAST('Dec 12 1776 12:38AM'ASDATETIME)AS[Third Date],CAST('1010'ASINT)AS[Number3];GO I ran this three times, taking about seven seconds each time. I waited till SQL cleared all the ...
using(SqlConnection con =newSqlConnection("MyConnectionString")) { con.Open(); varcolumns = con.GetSchema("Columns", columnRestrictions).AsEnumerable() .Select ( t =>new { Name = t[3].ToString(), Datatype = t.Field<string>("DATA_TYPE"), ...