Unique constraints are very similar to primary key constraints. Often, you will have more that one column or set of columns that uniquely determine rows in a table. For example, if you have a surrogate key defined as the primary key, you will most likely also have a natural key whose uni...
Combine CHARINDEX with substring 1> 2> DECLARE @FullName VarChar(25) 3> SET @FullName ='www.java2s.com'4> 5> SELECT SUBSTRING(@FullName, 1,CHARINDEX('java2s', @FullName) - 1) 6> GO --- www. (1 rows affected) 1> Related examples in the same category...
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To work around this limitation, when you back up a database from either SQL Server in an on-premises environment or in a virtual machine, you can: Back up to DISK instead of backing up to URL. Upload the backup files to Blob storage. Restore into SQL Managed Instance. The Restore com...
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How to parse a string using a Tally table. How to use the FOR XML PATH method to concatenate rows into a single character string. How to create a high-performance, schema-bound, in-line Table Valued FUNCTION in SQL. Where to find the fastest SQL-based delimited string splitter on the ...
Opening SQL Server 2016 Management Studio we shall once again have a look at the piece of DAX code that we utilized (see below). The code seen above will be the code that we are going to incorporate into a standard T-SQL query and execute via a Linked Server! However...
SQL Server on Azure Virtual Machines Explore T-SQL queries accessing data from multiple tables with various kinds of JOIN operations. Learning objectives After completing this module, you will be able to: Describe join concepts and syntax
WHEN SQLSTATE '22015' THEN… For all error codes, see PostgreSQL Error Codes in the PostgreSQL documentation. Throw errors You can use the PostgreSQL RAISE statement to throw errors. You can combine RAISE with several levels of severity including: SeverityUsa...
"SELECT INTO" with indexes? "Simple" SQL to check for alpha or numeric charcters isn't working right "String or binary data would be truncated.\r\nThe statement has been terminated." "String or binary data would be truncated" and field specifications “Unable to enlist in the transaction”...