A compiled XPath expression can be consumed by the Select, Evaluate, and Matches methods. The term "compile" here does not mean that the XPath expression becomes an executable. More simply, the action of compiling must be seen as the process that produces an object by collecting various pieces...
Applies to: SQL Server Analysis Services Azure Analysis Services Fabric/Power BI PremiumThis article summarizes new features, improvements, deprecated and discontinued features, and behavior and breaking changes in the most recent versions of SQL Server Analysis Services (SSAS)....
The SQL DISTINCT keyword is used in conjunction with theSELECT statement to eliminate all the duplicate records and fetching only unique records. There may be a situation when you have multiple duplicate records in a table. What is difference between unique and distinct in SQL? The main differenc...
it attempts again to create the table. The attempt again fails with the same error message. Just because Carol has a schema at her disposal doesn't mean that SQL Server will use it by default. She is finally able to successfully create the CarolSchema.table1 when she explicitly uses that...
string sqlAllCustomers = "SELECT * FROM Customers"; string cnStr = @"Data Source=.;Initial Catalog=northwind;Integrated Security=True"; using (SqlConnection cn = new SqlConnection(cnStr)) { cn.Open(); SqlCommand cmd = new SqlCommand(sqlAllCustomers, cn); SqlDataAdapter adpt...
There are lots of ways to find the gaps (islands) in sequential continuous numbers–all you need is a loop operator–but that doesn't mean they're all equally efficient. Let's start by taking a look at a row-based solution, implemented in T-SQL. But first, let's create a sample ta...
For developers, one difficult problem in SQL Server is tracking what data has changed in a database. An even greater challenge is architecting a simple solution that doesn’t heavily impact workload performance and isn't difficult to create, implement, and manage. So why go to all the troubl...
Valid. Represent in C asSQLUDF_BLOB,SQLUDF_CLOB, or a structure: struct sqludf_lob { sqluint32 length; /* length in bytes */ char data[1]; /* first byte of lob */ }; The [1] merely indicates an array to the compiler. It does not mean that only one character is passed; bec...
The second use case for usingWHERE 1=1is when you want to general SQL in a programmatic fashion. For example, you might have a selection box for users to select what category of product they want to view. In SQL, this will be implemented as part of the WHERE clause. If the code alr...
I am new to SQL. But i have logic with me. How to assign select query to variable? I am trying below code and its giving error. What i want to achieve is i want to calculate SUM(SALARY) and COUNT(SALARY) and then divide the both. something like that in lehman language. :var1 ...