varchar to float

The solution for converting float to varchar into a scientific counting method in MSSQLWhen the system was initialized, because of a colleague, there was no single quotation mark in front of the numeric data, resulting in a float type after entering

SELECT CONVERT (varchar), CAST (@testFloat as Decimal (38,2))SELECT STR (@testFloat, 38, 2) Importing from Excel to sql2000, there is a list of "contacts" that have become float types, and I want to convert to nvarchar type, using the following

SELECT CONVERT (varchar), CAST (@testFloat as Decimal (38,2)))SELECT STR (@testFloat, 38, 2)Import from Excel to sql2000, there is a column "contact" has become a float type, I want to convert to nvarchar type, with the following statementSelect

MySQL Char,varchar,text,blob is a few links but there are a lot of different types of fields, which is the basis of MySQL, but the foundation did not learn, bad to fill.Let's summarize briefly:Char: fixed length , maximum 255 charactersVARCHAR:

FromHttp://www.cnblogs.com/billyxp/p/3548540.htmlThe design of varchar (10000) has been discussed recently in the design of table structure, and we will analyze and analyze them.First, we first popularize common sense:1, char (n) and varchar (n) in

In the project, the float type is used to define some columns, such as price, but many problems are found.1. When the number of bits on the value is greater than 6, the float type is converted to the varchar type, which is displayed in the

Today encountered a mistake like this, the specific error situation is as followsThe solution is as follows.Database MSSQL When comparing the size, error prompt: "The varchar value ' 24.5 ' is converted to a column of the data type int" syntax error

I'm here to introduce you to some of the most commonly used fields, such as int, float, double, decimal, varchar, char, date, DateTime, and eight commonly used types. In the database design process we should be in line with the principle of

In MySQL5.6, the online DDL was introduced, the Add field and the secondary index do not lock the table, but the Modify field property is the lock table. See: http://hcymysql.blog.51cto.com/5223301/1370546Now in MySQL5.7, the modified varchar field

float 或 real 转换为字符数据，使用 STR 字符串函数通常比使用 CAST( ) 更有用。" data-guid="dab94cf3-4a7d-77cc-0078-255cfb46e652">When you want to convert from float or Real to character data, using the STR string function was usually more u Seful than CAST (). This was