Top 10 steps to optimize data access in SQL Server: Part II (Re-factor TSQL and apply best practices) - CodeProject
After writing the SQL in SQL Server Management Studio, click on the estimated execution plan icon (see below) to see the execution plan before actually executing the query. Try not to use COUNT(*) to obtain the record count in a table To get the total row count in a table, we usually use the following Select statement: SELECT COUNT(*) FROM dbo.orders This query will perform a full table scan to get the row count
If you create a form for entering the parameters and then use those values in the query it solves all of these problems because the form can provide a mechanism for entering the date and for passing it to the query that eliminates all the ambiguities. Depending on the circumstances and the users, I might prefer to create a form into which the user could select month and date from List or Combo Boxes, and write VBA code to construct the SQL
How to find duplicate values in a table. - CodeProject
License This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Share email twitter facebook linkedin reddit google+ About the Author Vivek Johari Technical Lead India I am currently working as a Analyst and have around 7.5 years of experience in database. Related article you may be interested in: How to remove duplicate rows from a table in SQL Server (MS KB article) Also, you can simplify your having clause
Introducing query execution plans from the Course Querying Microsoft SQL Server 2012
Continue to classic layout Stay on new layout Mark video as unwatched Mark all as unwatched Exercise files Access exercise files from a button right under the course name. Topics include: Writing SELECT queries Querying multiple tables Filtering text and duplicates Sorting and grouping query results Using SQL Server's built-in functions Writing subqueries Using common table expressions Programming with T-SQL Interpreting query performance data Subjects: Developer IT Software: SQL Server Author: Gerry O'Brien Introducing query execution plans In one of our previous lessons, on understanding processing stages, we discussed how the database engine processes the queries that we write
Do you know how is it called in the current release? charlesgc - Saturday, August 4, 2007 7:08:05 AM Scott, What are your thoughts on the whole issue of using SQL Server stored procedures or not? I assume that LINQ appeals to developers who send SQL statements to SQL Server rather than calling stored procedures. which databases linq support? is MS Access supported for example? bye Lenny76 Lenny76 - Wednesday, August 1, 2007 6:53:17 AM Hi Scott, Do you have a plan for beta 3?If you have,when is it release?Or what is the next edition of vs2008? Kangnoz - Wednesday, August 1, 2007 7:29:34 AM I am wondering performance issue while using LINQ
Newest Questions - Database Administrators Stack Exchange
mysql sql asked 2 hours ago Sarah 536 1 vote 0answers 20 views SQL 2008 R2 Mirroring I have this very frustrating problem that I've been trying to figure out for almost a week now. sql-server-2012 asked 3 hours ago user3113903 61 0 votes 0answers 14 views Versioning database tables I need to store all the changes made for almost every table in a meta-data database
Since I am able to bring in one record at a time, is it possible to create a sql user function to pull in multiple records for say, an SSRS report? Reply 4-18-14 Sri says: Enjoy.. We manage our SSRS folder permissions using AD and it would be a huge benefit to be able to query AD to get a list of who has permissions to folders and reports on our SSRS
Type into the console: select count() from TheTable and select distinct from TheTable The 1st command tells you how many total records you have in the table, and the 2nd command tells you how many duplicates you have. The total count of the original table should be the difference between the number counted before the delete query and the number deleted from the table
sql statement to remove duplicates - Access World Forums
the easiest way would be to create a new blank table structured as you want it, but then add a unique key to intercept the duplicates now append the existing table into the new table - the duplicates will be rejected
This is because the ShipperID field is defined as an Autonumber field, thus, whenever a new record is added to the Shippers table, the ShipperID field will automatically populate with the next available number. This would leave out records where the ReportsTo field is NULL, perhaps indicating that the employee is a supervisor and doesn't report to another employee in the Employees table (as is the case for Andrew Fuller)
Access 2010 SQL Query find partial match in string of full word only - Stack Overflow
edit Apologies, you can use * and ? in access as you expect, however are you sending the query as a string to some VBA code? Or trying to run it directly? As directly in a query it'll not be able to parse the tblNames.Name string into the query and you'll need to pass that in from a form or other peice of code. Edit based on comment To select a specific word it's just a bit of a work around required: SELECT * FROM table WHERE field LIKE '* myWord *' OR field LIKE '* myWord.*' You can optionally caputure start of sentances `LIKE 'MyWord *' and word with commas, fullstops, exclamtion marks etc..
You will find articles and topics relating to SQL query designs, from planning what tables and fields will be used to selecting criteria to be used in the SQL Statements. Hopefully you will find something of interest, whether you need to create simple SQL Select Queries, to inserting and updating information using the SQL language in Microsoft Access
How to Change Query Timeout Value for MS Access SQL Queries
You can use the ODBCTimeout property to specify the number of seconds Microsoft Access waits before a time-out error occurs when a query is run on an Open Database Connectivity (ODBC) database. Note that, if the QueryTimeout change in Registry is made while Microsoft Access is running, you must close and then re-open your Microsoft Access database before the change takes effect
SQLServerCentral.com
951 5,296 Sunday, July 19, 2015 12:38 AM In: RE: Virtual server By Blackdog Employers and Employees Opinions and questions about interactions with employees and employers. 58 731 Wednesday, April 8, 2015 4:39 AM In: RE: Movie Rental Database By Grant Fritchey Hardware Discussions about SQL Server hardware and sizing your servers
how to find second largest number through a query in sql - SQL forum - developer Fusion
while saving the records i am getting one error called "no transaction active" or " can't create new transaction because capacity was exceeded" help me to solve this problem yar. SQL forum discussion PROBLEM by royal ludhiana (2 replies) Sql Update Trigger by ElviOliv (2 replies) SQL server by raf9 (0 replies) lower and upper limit problem by ansari.wajid (2 replies) Pls help me, thank you! by joe90 (1 replies) SQL tutorials The Need for Partnership as a Small Business Dynamic Search Conditions in T-SQL SQL Injection Attacks by Example Uploading Images to a Database A complete banner advertising system Quick links Most recent Most popular Unanswered My threads Recent activity arif ahmad replied to How to receive data in web ..
Microsoft Access and Cloud Computing with SQL Azure Databases (Linking to SQL Server Tables in the Cloud)
Conclusion With an Azure account, you'll be able to use SQL Azure to create SQL Server databases cheaply and make them available across the internet in minutes. The instructions from their web site says: The release of SQL Server 2008 R2 adds client tools support for SQL Azure, including added support through SQL Server Management Studio (SSMS)
Back to top SQL Server 2014 in the news Gartner Read Gartner's Magic Quadrant for Advanced Analytics Platforms Read the story Gartner Read Gartner's Magic Quadrant for Business Intelligence and Analytics Platforms Read the story Gartner Read Gartner's Magic Quadrant for Data Warehouse and Data Management Solutions for Analytics 2015 Read the story TechRadar.pro Microsoft SQL Server 2014 review: The database heads into memory for Microsoft's latest release Read the review Back to top SQL Server blog SQL Server 2016 Upgrade Advisor Preview and CTP 2.2 now available 22 Jul 2015 10:00 AM by SQL Server Team Announcing Spark for Azure HDInsight public preview 10 Jul 2015 04:10 PM by T.K. Faster insights on any data Get to insights faster with a complete BI platform that speeds up how you access, analyze, clean and shape both internal and external data
script the source table and then run the script on destination, where you want to create the table, this will create a table with the same name with all the features of the source table. Tha query will give you properties for that table (columns, keys, values, etc.) I want to pull the same properties from a result set that is not already a table
Microsoft Access Query Tips and Techniques with SQL and VBA Code
For instance, if you are generating a series of reports while other people are changing the data, a Make Table query can create a snapshot of your data and allow your reports to work off that table. For multi-table queries, if it is set to Yes, (similar to using a DISTINCTROW in a SQL statement) only unique records in the underlying tables are retrieved
Create a Query in Microsoft Access to Find Duplicate Entries in a Table
There are many causes for duplicate data: for instance if you have multiple users entering data simultaneously via linked tables, or you might inherit a table with duplicate data already entered. Depending upon the selected tables and fields your results will look something similar to the shots below which show I have nothing duplicated in the first shot and the results of duplicates in the other
No comments:
Post a Comment