Make sure that the Web SQL checkbox is enabled. Using the Visible Columns text box to only show the room_name and last_updated columns. Provide the column names as a CSV list.įigure 4. Use the Visible columns text box to specify what columns you want to show. Using the Web SQL Console to delete a row from the rooms table.ĭevTools does not update tables in real-time. Type a Web SQL statement, then press Enter to run it.įigure 3. # Run Web SQL queriesĬlick a database to open a console for that database. But you can run statements from the Web SQL Console that edit or delete tables. You can't edit Web SQL data when viewing a Web SQL table, such as in Figure 2 above. Viewing the data of the rooms Web SQL table. In Figure 1 below html5meetup is a database and rooms is a table.įigure 2. Expand the Web SQL section to view databases and tables. # View Web SQL DataĬlick the Sources tab to open the Application panel. This guide shows you how to use Chrome DevTools to inspect Web SQL data. She primarily focuses on the database domain, helping clients build short and long term multi-channel campaigns to drive leads for their sales pipeline.The Web SQL specification is not being maintained and does not have cross-browser support. Nupur Dave is a social media enthusiast and an independent consultant. If you need help with any SQL Server Performance Tuning Issues, please feel free to reach out at is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2). Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,500 database tech articles on his blog at. Pinal has authored 13 SQL Server database books and 45 Pluralsight courses. He holds a Masters of Science degree and numerous database certifications. Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 17 years of hands-on experience. Excel – Sum vs SubTotal – SQL in Sixty Seconds #167.9 SQL SERVER Performance Tuning Tips – SQL in Sixty Seconds #168.Copy Database – SQL in Sixty Seconds #169.Here are my few recent videos and I would like to know what is your feedback about them. EXEC ('select name,databaseid,dbname () as CurrentDB from sys.databases where databaseid <4') at TEST01V If we do not specify the database name, EXEC SQL statement will execute the query on the. Replace the linked server name with your linked server name. If you liked this video, please do not forget to subscribe to my YouTube Channel – SQL in Sixty Seconds. Please refer to the following example of executing a query on a remote server. If you have situations like queries running fast sometimes and suddenly getting slow and they are ad-hoc queries, there are quite possibilities that you are facing issues of your cache plan bloating. Note:It is recommended that you use the same way to write a single query or a stored procedure, otherwise, there will be plenty of entry of your execution plan in the cache and it is indeed a nightmare for SQL Server Performance tuning experts like me to identify the real troublemaker. If you are using an entity framework or generating the dynamic query every single time, it is quite possible you have lots of cache entries for a single query. ![]() This is because when we change anything in the query even a white space that is not used, the query will generate a new plan. Well, there we go, even though the query is not the same, still the cache entry is different. Now let us keep both the queries absolutely the same but just change the upper case to lower case for a few of the operators of the query. Now, this can be easily believable as both the queries are technically different queries. However, when I run the query to check the entries in the cache, there are two different entries for both the queries. Here is the blog post where you can download the query to inspect your cache memory: SQL SERVER – List Query Plan, Cache Size, Text and Execution Count. Now let us check the execution plan, both the execution plan are identical and the results were the same as well. ![]() ![]() However, if there was an OrderQty difference, it will have different results. USE AdventureWorksĪdditionally, note the query two has a different where condition but there is no OrderQty value as 0 so it will not return any additional results. Here are two queries, which will generate exactly the same result and execution plan. The question I was asked was about a query that had the same result same query plan but the different entry in the cache, is that possible. This question was recently discussed with my client during the Comprehensive Database Performance Health Check.
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