2009年4月6日 · 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 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. –

In order to filter the student records that have a 10 grade in Math, we can use the EXISTS SQL operator, like this: SELECT id, first_name, last_name FROM student WHERE EXISTS ( SELECT 1 FROM student_grade WHERE student_grade.student_id = student.id AND student_grade.grade = 10 AND student_grade.class_name = 'Math' ) ORDER BY id

2014年5月7日 · Again, the parser does not expect to encounter WHERE at this point and so will raise a similar syntax error—but you hadn't intended for that where to be an SQL keyword: you had intended for it to identify a column for updating!

2012年9月23日 · The SQL WITH clause is basically a drop-in replacement to the normal sub-query. Syntax For The SQL WITH Clause. The following is the syntax of the SQL WITH clause when using a single sub-query alias. WITH <alias_name> AS (sql_subquery_statement) SELECT column_list FROM <alias_name>[,table_name] [WHERE <join_condition>]

2014年10月9日 · <> is Standard SQL-92; != is its equivalent. Both evaluate for values, which NULL is not -- NULL is a placeholder to say there is the absence of a value. Which is why you can only use IS NULL/IS NOT NULL as predicates for such situations. This behavior is not specific to SQL Server. All standards-compliant SQL dialects work the same way.

2015年5月23日 · When SQL Server comes across your $ sign, it automatically converts it into a money data type. Because you don't have an explicit value after the dollar sign, SQL Server is assuming 0.00. From MSDN: When converting to money or smallmoney, integers are assumed to be monetary units. For example, the integer value of 4 is converted to the money ...

2022年6月23日 · Double-colons are required in SQL Server 2005 when granting permissions on schemas, certificates, endpoints, and a few other securables. As well as... When using User-Defined Types, static methods of the type must be called using the double-colon syntax. Sources: BOL and Kalen Delaney's Blog

2010年11月3日 · On the positive side T-SQL syntax will work. SELECT * FROM [SERVER_NAME].[DATABASE_NAME].[SCHEMA_NAME].[TABLE_NAME] OPENQUERY. This is basically a pass-through. The query is fully processed on the remote server thus will make use of index or any optimization on the remote server.

2009年10月1日 · I use this below syntax for selecting records from A date. If you want a date range then previous answers are the way to go. SELECT * FROM TABLE_NAME WHERE DATEDIFF(DAY, DATEADD(DAY, X , CURRENT_TIMESTAMP), <column_name>) = 0