SQL Join Without Duplicates

sql joinwithout duplicates represents a topic that has garnered significant attention and interest. SQL asterisk(*) all possible uses - Stack Overflow. It is used in sql-server for xml. In the code below, aliasing the subquery as ' [*]' means that COLUMN_NAME and DATA_TYPE xml nodes output on the same level as TABLE_SCHEMA and TABLE_NAME.

Should I use != or <> for not equal in T-SQL? 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. What does the "@" symbol do in SQL? The @CustID means it's a parameter that you will supply a value for later in your code. This is the best way of protecting against SQL injection.

Create your query using parameters, rather than concatenating strings and variables. The database engine puts the parameter value into where the placeholder is, and there is zero chance for SQL injection. From another angle, sQL WITH clause example - Stack Overflow. 353 The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also called sub-query refactoring), which can be referenced in several places within the main SQL query.

Similarly, the name assigned to the sub-query is treated as though it was an inline view or ... 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 '%' + @

How do I perform an IF...THEN in an SQL SELECT?. 2059 The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. Additionally, remove all spaces from a string in SQL Server - Stack Overflow. What is the best way to remove all spaces from a string in SQL Server 2008?

LTRIM(RTRIM(' a b ')) would remove all spaces at the right and left of the string, but I also need to remove the space ... Furthermore, sQL to find the number of distinct values in a column. sql - Incorrect syntax near '' - Stack Overflow. SELECT TOP 1000 * FROM master.sys.procedures as procs left join master.sys.parameters as params on procs.object_id = params.object_id This seems totally correct, but I keep getting the following error: Msg 102, Level 15, State 1, Line 6 Incorrect syntax near ''.

It works if I take out the join and only do a simple select: How to set variable from a SQL query? I'm trying to set a variable from a SQL query: declare @ModelID uniqueidentifer Select @ModelID = select modelid from models where areaid = 'South Coast' Obviously I'm not doing this right as it ...