以下是从 Visual Basic 数据类型到 SQL Server 数据类型的转换。 Visual Basic 数据类型SQL Server 数据类型 Long、Integer、Byte、Boolean、Objectint Double、Singlefloat 货币money 日期datetime 小于或等于 4,000 个字符的 Stringvarchar/nvarchar 大于4,000 个字符的 Stringtext/ntext ...
REPLICATE(string_expression, interger) SPACE# 说明:返回指定个数的空格 SPACE(integer) 参数: 返回值: 注意: REPLACE# 说明:用一个字符串替换指定字符串 REPLACE(expression, search_pattern, replacement_string) REVERSE# 说明:反转字符串 REVERSE(expression) SUBSTRING# 说明:截取指定长度的字符串 SUBSTRING(expres...
For more information, see String Functions (Transact-SQL) in the SQL Server documentation. PostgreSQL Usage Most of SQL Server string functions are supported in PostgreSQL, there are few which aren’t: UNICODE returns the integer value of the first character...
语法REPLACE('string_expression1','string_expression2','string_expression3') (12)REVERSE 函数功能返回字符表达式的反转 语法REVERSE(character_expression) (13)RIGHT 函数功能返回字符串中从右边开始指定个数的integer_expression字符 语法RIGHT(character_expression,integer_expression) (14)RTRIM 函数功能截断所有尾随...
◆ T-SQL中的关键字在前面的章节中,介绍了很多使用T-SQL操作数据库、数据表及数据记录的方法,使用这些方法可以方便灵活地访问SQL Server数据库。然而,只使用单个T-SQL语言来操作数据的话,是远远不够的。T-SQL还可以像其他编程语言一样,使用流程来进行程序控制,完成更强大的功能。
SQL SELECT38/5AS[Integer],38%5AS[Remainder]; B. 使用表中的列的示例 以下示例返回产品 ID 号、产品单价、除以每种产品的单价后得到的模(余数)、转换为整数值,以及订购的产品数。 SQL SELECTTOP (100) ProductID, UnitPrice, OrderQty,CAST((UnitPrice)ASINT) % OrderQtyASModuloFROMSales.SalesOrderDetail...
String函数 TSQL支持以下字符串函数: 函数 返回类型 CONCAT VARCHAR INITCAP VARCHAR LENGTH INTEGER LOWER VARCHAR LPAD VARCHAR LTRIM VARCHAR REGEXP_REPLACE VARCHAR RPAD VARCHAR RTRIM VARCHAR STRPOS INTEGER SUBSTR VARCHAR TRIM VARCHAR UPPER VARCHAR 示例 ...
"String or binary data would be truncated.\r\nThe statement has been terminated." "String or binary data would be truncated" and field specifications “Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered in...
IntegerLiteral: whole numbers NumericLiteral: decimal numbers such as 0.03 RealLiteral: numbers written with scientific notation such as 1E-02 MoneyLiteral: values prefixed with currency symbol such as $12 BinaryLiteral: such as 0xABCD1234 StringLiteral: such as ‘Hello World’ NullLiteral: the ...
Use this option to run a command string within a T-SQL block, procedure, or function. You can also use the EXECUTE command with linked servers. You can define metadata for the result set using the WITH RESULT SETS options. For parameters, use either the value or ...