In the realm of relational database management systems (RDBMS), SQL (Structured Query Language) and T-SQL (Transact-SQL) are often used interchangeably. In this article, we'll delve into the key differences between SQL and T-SQL, shedding light on their
以整数返回两个字符表达式的 SOUNDEX 值之差。返回的整数是 SOUNDEX 值中相同字符的个数。返回的值从 0 到 4 不等，4 表示 SOUNDEX 值相同。
Microsoft has developed or licensed a number of SQL variants. Yes, they’re all procedural languages used to manage relational databases, but they’re used differently. They were also created by different organizations. Here’s the differences between SQ
---SOUNDEX函数可用来查找声音相似的字符串但SOUNDEX函数对数字和汉字均只返回0 值 DIFFERENCE() ---函数返回由SOUNDEX 函数返回的两个字符表达式的值的差异 ---0 两个SOUNDEX 函数返回值的第一个字符不同 ---1 两个SOUNDEX 函数返回值的第一个字符相同 ---2 两个SOUNDEX 函数返回值的第一二个字符相同 ---...
select difference('hello', 'hel'); select difference('hello', 'hello'); select replace('abcedef', 'e', 'E');--替换字符串 select stuff('hello world', 3, 4, 'ABC');--指定位置替换字符串 select replicate('abc#', 3);--重复字符串 select subString('abc', 1, 1), subString('abc...
Difference between T-SQL and SQL There are three distinct differences between the two. While T-SQL is an extension to SQL, SQL is a programming language. T-SQL contains procedural programming and local variable, while SQL does not. T-SQL is proprietary, while SQL is an open format. ...
DIFFERENCE( ) 返回两个字符串的匹配程度 SOUNDEX( ) 返回两个字符串发音的匹配程度 LOWER( ) 把大写字母转换成小写字母 UPPER( ) 将小写字母转换成大写字母 LTRIM( ) 删除字符串的前导空格 RTRIM( ) 删除字符串的尾部空格 REPLICATE( ) 重复一个字符表达式若干次 ...
T-SQL delivers two functions that let you convert one data type to another. Called CAST and CONVERT, they work to deliver a similar result, yet have a crucial difference. Let's have a brief overview of each. CAST is a universal conversion function that works the same way for different SQ...
If you have a large difference between your startdate and enddate values, you can use the DATEDIFF_BIG function instead of the T-SQL datediff function. Convert Function The T-SQL convert function can convert values from one datatype into another. For example, you might use the T-SQL conver...
DIFFERENCE(character_expression,character_expression) 参数 character_expression 字符数据的字母数字表达式。 character_expression 可以是常量、变量或列。 返回类型 int 备注 DIFFERENCE比较两个不同的SOUNDEX值,并返回一个整数值。 此值度量SOUNDEX值匹配的程度,以0刻度4。0值表示SOUNDEX值之间的弱或无相似性;4指示强...