Integer
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| TINYINT | tinyint | tinyint is unsigned |
| SMALLINT | smallint | - |
| MEDIUMINT | int | int stores data on 4 bytes |
| INT | ||
| BIGINT | bigint | - |
Decimal
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| DECIMAL(M,D) | decimal(p,s) | The maximum precision is 38, while the default is 18. The default scale is 0. |
浮点或双精度数据类型用于精度大于38的小数。
Floating Point
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| FLOAT(N) | float(n) | - |
| FLOAT(M,D) | float(24) | SQL Server does not allow the non-standard syntax |
| DOUBLE(M,D) | float(53) | SQL Server does not allow the non-standard syntax |
| REAL(M,D) |
Date and Time
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| DATETIME | datetime2 | Date values start at 0001-01-01 |
| DATE | date | Date values start at 0001-01-01 |
| TIME | time | timerange is 00:00:00.0000000 through 23:59:59.9999999 |
| TIMESTAMP | smalldatetime | smalldatetime value range is 1900-01-01 through 2079-06-06 |
| YEAR | smallint | - |
MS SQL Server不能将零存储为月份或日期。
String
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| CHAR | nchar(n) | nchar allows 4000 characters |
| VARCHAR | nvarchar(n|max) | nvarchar allows 4000 characters but max indicates maximum storage size of 2^31-1 bytes. |
| TINYTEXT | ||
| TEXT(M) | ||
| MEDIUMTEXT | ||
| LONGTEXT |
字符串常量中的\'转义序列应替换为双引号字符。
Binary
| MySQL | MS SQL Server | Conversion remarks |
|---|---|---|
| BINARY(M) | binary(n) | binary allows 8000 bytes |
| VARBINARY(M) | varbinary(n|max) | nvarbinary allows 8000 bytes but max indicates maximum storage size of 2^31-1 bytes. |
| TINYBLOB | ||
| BLOB | ||
| MEDIUMBLOB | ||
| LONGBLOB |
https://www.mssqltips.com/sqlservertutorial/2203/mysql-to-sql-server-data-type-comparisons/