MySQL :: MySQL 5.5 Reference Manual :: 12.14 Information Functions
For REPLACE statements, the affected-rows value is 2 if the new row replaced an old row, because in this case, one row was inserted after the duplicate was deleted. Within a stored routine, the default database is the database that the routine is associated with, which is not necessarily the same as the database that is the default in the calling context
Overall sequences remain a bit of a niche feature for me in SQL Server, I just can not see any normal everyday activity needing to use them, although it would make porting of applications between Oracle and SQL Server a bit easier since they will both be able to use them. The reason I was mixing join types at the time was due to an ORA-600 bug involving nested table types; the cross join to the nested table field was not working properly
You'd either have to use human judgement to decide which relationships were important and discard the rest or end up creating thousands of tables to describe the relationships between different bits of data. Without your XML structure, I can't give you the code for this, but it's almost certainly fewer than 5 lines of code.posted by Caviar at 9:33 PM on February 15, 2006 There's probably enough info here to get the job done, but I thought I'd mention that many ETL (extract transform load) tools can move from xml to a relational database
What this actually means is that we can create a set of processing rules inside one or more object types and "plug them into" the Oracle server to use in various scenarios. We store the cursor information in a package variable for sharing across methods; fetch: using the cursor description and ANYTYPE metadata, we fetch data off the dynamic SQL cursor into a relevant type variable
SQL in the Wild
To aggregate one set of values based on another set of values, SQL has to get all the like values of the grouping columns together so that it can do the aggregation. The optimism must then compile the query, generating an execution plan, must add that plan to the plan cache (in most cases) and then must pass that plan onto the query execution engine so that the query can be executed
SQL query performance tuning
Once you open the link you will see a download option at the right side of the page, go to the download page from the menu : You can download 32 bit or 63 bit image and I am using 32 bit as my system is with 32 bit OS . I have an sql, this taking 1hr time same query if i executed for secord time immediatly on same session it is running for a long time and i am killing that session after some time
pureXML in DB2 9: Which way to query your XML data?
Specifically, XQuery is designed to navigate through XML document trees and extract XML fragments, but also includes expressions to create, manipulate and iterate over sequences of XML items and construct new XML data. DB2 stores and processes XML in its inherent hierarchical format, avoiding the performance and flexibility limitations that occur when XML is stored as text in CLOBs or mapped to relational tables
Triggers and constraints both are used to maintain the integrity of database but constraints have more benefits over triggers as it uses very less resources. - The application must first convert the binary value into a character string (which doubles its size, thus increasing network traffic and taking more time) before it can be sent to the server
sql server - sql query to return differences between two tables - Stack Overflow
This specific case here is easy and for this case such tools are not needed but this can get complex easily if you introduce more columns, databases on two servers, more complex comparison criteria and such
SQL UNIQUE and DISTINCT
Once you open the link you will see a download option at the right side of the page, go to the download page from the menu : You can download 32 bit or 63 bit image and I am using 32 bit as my system is with 32 bit OS . - 2014 EE Annual Survey EXPERT WHO ANSWERED markgeer Mark Geerlings has answered 2,186 questions on Experts Exchange and is an expert in Oracle Database, Databases and Query Syntax
PostgreSQL: Documentation: 9.4: Value Expressions
When an aggregate expression appears in a subquery (see Section 4.2.11 and Section 9.22), the aggregate is normally evaluated over the rows of the subquery. This means that they can contain variables only if those variables are grouped by GROUP BY; this restriction is the same as if the direct arguments were not inside an aggregate expression at all
SQL WHERE Clause
Below is a selection from the "Customers" table: CustomerID CustomerName ContactName Address City PostalCode Country 1 Alfreds Futterkiste Maria Anders Obere Str
Example queries: SELECT * FROM sp ORDER BY 3 DESC sno pno qty S1 P1 NULL S3 P1 1000 S3 P2 200 S2 P1 200 SELECT name, city FROM s ORDER BY name name city John London Mario Rome Pierre Paris SELECT * FROM sp ORDER BY qty DESC, sno sno pno qty S1 P1 NULL S3 P1 1000 S2 P1 200 S3 P2 200 Expressions In the previous subsection on basic Select statements, column values are used in the select list and where predicate. SQL Special Constructs SQL supports a set of special expression constructs: CAST(exp-1 AS data-type) Converts the value - exp-1, into the specified date-type
Is there any easiest way to find that? There are lots of scripts and stored procedures available on the internet but I am looking for some simplest way. I have some queries, but they return values for only user created tables and not system tables or tables created by an asp.net web application for instance
Newest Questions - Database Administrators Stack Exchange
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SQL Tutorial - Learn SQL
SQL GROUP BY The SQL GROUP BY statement is used along with the SQL aggregate functions like SUM to provide means of grouping the result dataset by certain database table column(s). SQL DISTINCT Learn how to use the SQL DISTINCT clause together with the SQL SELECT keyword, to return a dataset with unique entries for certain database table column(s)
SQLServerCentral.com
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in this query u used a SELECT TOP 1 Sal FROM ( SELECT DISTINCT TOP 2 Sal FROM Emp ORDER BY Sal DESC) a ORDER BY Sal why did u use that a variable can u explain me.. The problem with SELECT TOP 1 TotalUnitCount FROM ( SELECT DISTINCT TOP 4 TotalUnitCount FROM TotalUnitsInLot ORDER BY TotalUnitCount DESC) a ORDER BY TotalUnitCount approach is, if there are only 3 audits for a business, this query still gets the data from 3rd audit and gives me those results
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