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Should I use != or lt; gt; for not equal in T-SQL? - Stack Overflow Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e g in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As an example of when to choose the standard form, T-SQL supports two “not equal to” operators: <> and != The former is standard and the latter is not
sql是什么，通俗的说，太专业听不懂？ - 知乎 SQL是一种用于处理数据的语言，就像我们说的汉语、英语一样，有特定的语法结构，让我们灵活地处理数据。 SQL并不难学，首先得理解 S Q L 三个字母分别代表什么。 Structured Query Language，简写为SQL，意思是结构化查询语言。也就是说SQL是用来查询数据用的，通过代码指令来实现个性化的数据抽取
SQL: IF clause within WHERE clause - Stack Overflow Is it possible to use an IF clause within a WHERE clause in MS SQL? Example: WHERE IF IsNumeric(@OrderNumber) = 1 OrderNumber = @OrderNumber ELSE OrderNumber LIKE '%' + @
sql server - SQL MAX of multiple columns? - Stack Overflow How do you return 1 value per row of the max of several columns: TableName [Number, Date1, Date2, Date3, Cost] I need to return something like this: [Number, Most_Recent_Date, Cost] Query?
What is the use of the square brackets [] in sql statements? The Microsoft book for SQL course says "You should use two-part names to refer to tables in SQL Server databases, such as Sales Customer" so they don't ask to surround namespace with square bracket but if I remember correctly, surrounding them puts it in the right namepsace