使用样式 3 浮动到 varchar 在 sql 服务器 2016 中失败
Float to varchar with style 3 is failing in sql server 2016
我在 sql 服务器 2016 上执行以下查询时出现算术溢出错误。
"select convert(varchar(20), cast('0' as float), 3)"
相同的查询在 sql 服务器 2014 上运行良好。
CONVERT ( data_type [ ( length ) ] , 表达式 [ , 样式 ] )
The same query works fine
on sql server 2014.
sql 2014
风格
Other values are processed as 0.
A maximum of 6 digits. Use in scientific notation, when appropriate.
sql2016
风格
3 Always 17 digits. Use for lossless conversion. With this style, every distinct float or real value is guaranteed to convert to a
distinct character string.Applies to: Azure SQL Database, and starting in SQL Server 2016.
https://docs.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql
您收到此错误原因 casting '0' to float of style 3 returning 23 charter value which is unable to convert to varchar of length 20 only。
尝试类似的东西，
select convert(varchar(23), cast('0' as float), 3)
或者
select convert(varchar(max), cast('0' as float), 3)
我在 sql 服务器 2016 上执行以下查询时出现算术溢出错误。
"select convert(varchar(20), cast('0' as float), 3)"
相同的查询在 sql 服务器 2014 上运行良好。
CONVERT ( data_type [ ( length ) ] , 表达式 [ , 样式 ] )
The same query works fine on sql server 2014.
sql 2014
风格Other values are processed as 0. A maximum of 6 digits. Use in scientific notation, when appropriate.
sql2016
风格3 Always 17 digits. Use for lossless conversion. With this style, every distinct float or real value is guaranteed to convert to a distinct character string.Applies to: Azure SQL Database, and starting in SQL Server 2016.
https://docs.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql
您收到此错误原因 casting '0' to float of style 3 returning 23 charter value which is unable to convert to varchar of length 20 only。
尝试类似的东西，
select convert(varchar(23), cast('0' as float), 3)
或者
select convert(varchar(max), cast('0' as float), 3)