Only one VLF is created if the growth is less than or equal to 64 MB and more than 1/8 of the current log size. For more information on VLF growth, see Virtual Log Files (VLFs). Thread management - ParallelRedoThreadPool: Instance level thread pool shared with all databases having ...
WHERE is applied as a limitation on the set returned by SQL; it uses SQL's built-in set oeprations and indexes and therefore is the fastest way to filter result sets. Always use WHERE whenever possible. HAVING is necessary for some aggregate filters. It filters the query AFTER sql has re...
SQL is standardized in such a way by asking a specific questions of a database object, in the form of a structured query that a database knows how to respond to. SQL uses a command interpreter to parse the SQL. Because it’s such a powerful way of thinking about the data, SQL has ...
In this kind of a JOIN, we get all records that match the condition in both tables, and records in both tables that do not match are not reported. In other words, INNER JOIN is based on the single fact that: ONLY the matching entries in BOTH the tables SHOULD be listed. Note that ...
I discovered this when troubleshooting some replication issues (Publisher: SQL 2000 Ent., Dist/Sub: 2008 R2 Ent.) that arose with some of the system-generated Insert, Update, and Delete replication stored procedures. What is the purpose/thought behind having this "grouping" ability?sql...
When this new flag is specified, version 1 of the database is deleted atomically within the same transaction with no downtime. However, it comes at the cost of having both databases loaded into memory simultaneously. Many-to-many relationships in tabular models This improvement allows many-to-...
Clauses:Clauses forms the components of SQL statements and queries such as WHERE, GROUP BY, HAVING, ORDER BY. Expression:Expressions in SQL produce either scalar values, or columns and rows of data. Boolean Conditions:Conditions are the expressions that result in the boolean value TRUE or FALSE...
would use Setup.exe by supplying all appropriate setup command line parameters. This is in contrast to having to install RTM media, find and download the desired Service Pack (for the correct language and CPU), apply the Service Pack, then load Setup.exe to perform the desired setup action....
Technique #1: How to find duplicate values in SQL table Identifyingduplicate valuesin a database is essential for maintaining data integrity and accuracy. To find duplicate values in an SQL table, you can utilize the “GROUP BY” and “HAVING” clauses along with aggregate functions. ...
grouped information. It is similar to the WHERE clause in that the HAVING keyword is followed by an expression that evaluates to true, false, or unknown. You can test the expression by using standard comparison operators, Boolean operators, or special operators. HAVING is also an optional ...