when I execute SQL script from SQL Server 2019 version in SQL Server 2012. Considering the first group, the manager names can be got from an inner join: SELECT DISTINCT m. Today, I worked on a service request that our customer faced a performance issue in their business critical service tier database. If you previously restored the DataConceptsOMS database and currently have that database in your localhost you do not need to restore it again here. If it is intended as a parameter to a table-valued function or to the CHANGETABLE function, ensure that your database compatibility mode is set to 90. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"Business. stats view if you use SQL Server 2022 or Azure SQL. Not a perfect solution but its working for us. Right Click on table > Script Tables as > Create To > New Query Window. x) and later. It is tractable, but please read the following very carefully, and all the way through (including links). 마지막 페이지 삽입 경합에 최적화할지 여부를 지정합니다. Right Click on table > Script Tables as > Create To > New Query Window 2. However, when you hit the convoy, the feature. 然后，当我将脚本复制到visual studio中的项目时，显示了以下消息：. The next setting is the Authentication Type. OPTIMIZE_FOR_SEQUENTIAL_KEY. Regardless of politically biased. SQL Server 2019 CTP 3. Hello, I am receiving the following error 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. Tests","path":"Business. SQL Server 2019 and above has a specific index optimisation for this, OPTIMIZE_FOR_SEQUENTIAL_KEY. But here is one example: with Java's HashMap<Integer, Integer> it took 20 ms to read 1 mln sequential values. An email sequence is a series of marketing messages targeting your audience on a set schedule. Using sequential writing, we can write data starting at the beginning of a memory: Sequential write is used in disk-based drives. OPTIMIZE_FOR_SEQUENTIAL_KEY = { ON | OFF} Applies to: SQL Server 2019 (15. 「optimize_for_sequential_key = off」ステートメントをすべて削除して、もう一度試してみたくなります。 それをしても安全でしょうか？ sql-server ssms plesk sql-server-express sql-scriptsFirst specify the azure storage account name and access key as shown below. Bạn có thể sử dụng nó để di chuyển dữ liệu từ bảng sang máy. OPTIMIZE_FOR_SEQUENTIAL_KEY = { ON | OFF} Applies to: SQL Server 2019 (15. Best regards Lars The system view sys. AFAIK, OPTIMIZE_FOR_SEQUENTIAL_KEY, optional parameter of create index, is a new feature in SQL Server 2019 and therefore shouldn't be displayed when looking at 2017 documentation. " except for one, which is:Incorrect syntax near the keyword 'with'. Este es un proyecto de prueba técnica. Most reserved tokens are not allowed as column or table names, but may be allowed as an “AS” column label name. I need to have the same column in my view so the following works: SELECT table_name. As the system POSTs, press F6 to trigger the Boot Manager. 2), I get the following error: SQL71627: The element Primary. A clustered index always performs best when the database can merely append to it - otherwise, the DB has to do page splits. It’s not an either-or question – always. 45K subscribers in the SQLServer community. 1 Answer. The number parameter is the value used to increment datepart. SQL80001: ner 'OPTIMIZE_FOR_SEQUENTIAL_KEY‘的语法不正确. 2xlarge doesn’t increase the. Combine two or more result sets into one set, including all duplicates. Otherwise, the comparison algorithm will try to inherit these values from existing objects. 4. Thank you for reaching out on the Redgate forums regarding your SQL Compare inquiry. Trong khi “optimize_for_sequential_key” giúp giảm ảnh hưởng của các sự cố, tăng hiệu suất lên tới 40%, TempDB giúp loại bỏ các vấn đề bị tắc nghẽn ở lớp dữ liệu. It improves throughput for high-concurrency inserts into an ascending clustered index. Step 1: Develop the state diagram –. The issue arises from a discrepancy between the version of SQL server utilized in DevOps and the SQL script generated locally. This hint directs the query optimizer to use the standard algorithms it has always used if no parameters values had been passed to the query at all. How can I write a query where I can INSERT into table 2, including the auto-generated value from table 1. Default value for column is not set at moment of insert using openjson. Important: Your trigger should execute the following steps in the transaction:Azure SQL Database Bacpac export has missing indexes. [. That means that only one row can exist in each cluster with an index on the table. Specifies whether or not to optimize for last-page insert contention. Set this option to change the BUCKET_COUNT property of objects. Test1 where db. I have a SQL Server 2019 instance on my hands but all database in it are set to Compatibility Level 110 (SQL Server 2012). El objetivo es que al final. Set calls, but there might be some who are depended upon this behaviour (it would need a default value in SQL for the target column). One of the replications fails with error: OPTIMIZE_FOR_SEQUENTIAL_KEY’ is not a recognized CREATE TABLE option. [vGetAllCategories] then it shows three column. Not sure what's the purpose of this setup however I'm unable to find how such table should be mapped in order to tell EF to perform inserts properly. SSMS scripting always recites all the options, even when set to the default value to ensure full fidelity scripting, which sometimes a pain. g. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. – %. that is equivalent to a Left Outer Join as10. Recently, I finally encountered and successfully resolved the “last-page insert contention” or “latch convoy problem” in a production SQL Server environment. It identifies performance issues and deadlocks, analyzes stored procedures, SQL Server query issues, query execution plans, and helps you understand query performance characteristics. I would like to rebuild a few indexes with the options: ALTER INDEX ALL ON [MyIndexName] REBUILD WITH (FILLFACTOR = 80, ONLINE = ON, SORT_IN_TEMPDB = ON RESUMABLE = ON,. Anleitung Windows Update Microsoft. In the year 2006, Tesseract was considered one of the most accurate open-source OCR engines. I have a table 1 with an auto-generated primary key in SQL Server. Votes_Insert SET(OPTIMIZE_FOR_SEQUENTIAL_KEY = ON); Get Back To Work. If you like what you see here, you'll love my advanced performance tuning training:take another look at OPTIMIZE_FOR_SEQUENTI. This option automatically drops an existing index after recreating it, without the index being explicitly dropped. Note. shc: DB 1 (running OK) ALTER TABLE [dbo]. Click the Custom Filters button. Resources for IT Professionals. 解决方案 您的目标 SQL Server 只是一个旧版本. DatabaseLog, the execution plan will show a Table Scan iterator. val FROM a JOIN b ON (a. OPTIMIZE FOR hint now instructs the query optimizer to use 288 for @SalesPersonID when the query is compiled and optimized. This week is about learning Flyway. 構文エラー:OPTIMIZE_FOR_SEQUENTIAL_KEY. 1 Prerequisites Before the Class; 0. Tuesday, October 29, 2019 11:34 PM Answers When you create the index: CREATE INDEX so_optimized. OPTIMIZE_FOR_SEQUENTIAL_KEY index option – Improves throughput for high-concurrency inserts into indexes. ON dbo. The following command shows how to check the statistics: select * from sys. At that time we were between the devil and the deep sea: if. wsl --shutdown diskpart # open window Diskpart select vdisk file="C:WSL-Distros…ext4. Microsoft SQL Server Management Studioでテーブルを作成しましたが、テーブルは正常に機能し、ビルド中にエラーは発生しませんでした。. Consulte En segundo plano en. The one that. The Power Automate for desktop. You can simply remove that option and the script. この競合を解消することができるオプションとして optimize_for_sequential_key オプションが追加されたようです。 SQL Server on Linux の tempdb の自動的な分割 2017 の SQL Server on Linux では、tempdb の自動的な分割は行われなかったのですが、2019 CTP 3. Share Improve this answer Follow OPTIMIZE_FOR_SEQUENTIAL_KEY is not a recognized CREATE TABLE option and <pre>Cannot find the object " dbo. . Week 5 goal: set up Ola index maintenance for all Azure SQL Databases. ON dbo. 0. . This option automatically drops an existing index after recreating it, without the index being explicitly dropped. Let us take a moment understand the behavior of this choice. , . This option is intended for indexes that are prone to last-page insert contention, typically seen with indexes that have a sequential key such as an identity column, sequence, or date/time. Alternatively, you can use existing chatbot transcripts or employ crowd-sourcing platforms for labeling tasks. The state diagram of a Mealy machine for a 101 sequence detector is: Step 2: Code Assignment –. Google Assistant: Google. This is found in the Boot Options menu. OPTIMIZE_FOR_SEQUENTIAL_KEY aims to do two things – control the rate at which new threads are allowed to request the latch, and favor threads that are likely to keep the throughput high. Change the name of the. You signed out in another tab or window. See Implementation and contraindications for OPTIMIZE_FOR_SEQUENTIAL_KEY for more details. Here ResultSet (rs) only returns column information for ProductCategoryID and not for the other two columns. So as solution, remove that keyword from the sql script and save it. For example, to specify d, use d. Here is the script which you can execute if you want to change your compatibility of the database to the latest version of SQL Server 2019. Tesseract is an open-source text recognition engine that is available under the Apache 2. If you use the optional keyword, client devices other than WPA and CCKM clients can use this SSID. 1. Query hints are specified as part of the OPTION clause. With FnvHashMap<i32, i32> it took 75 ms. SQL. We use cookies for various purposes including analytics. With Rust's BTreeMap<i32, i32> it took 170 ms. On this window, we need to select the Target Framework for the application. In a not-so-heavy workloads, it brings a small overhead. 4236. 1 Time. You can see that inserts with 100 parallel sessions are 16% slower for a table with the optimized sequential key. In a not-so-heavy workloads, it brings a small overhead. If you insert rows into a table without using a clustered index, the rows will appear out of order. Votes_Insert SET(OPTIMIZE_FOR_SEQUENTIAL_KEY = ON); Page locks are not used. NET 7 is already out, you can select it as well). The results show that the feature should be used for tables, where latch convoys already happen or are about to happen. Describe the solution you'd like It would be good to know if indexes have this enabled. Now, if that primary key is dropped and added as a CLUSTERED index, the scan will. . There are six models provided: resnet18_2d_rgb_hmdb5_32. )This model can only be used with Train Adapt Optimize (TAO) Toolkit, DeepStream SDK or TensorRT. "OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF"문을 모두 제거하고 다시 시도하고 싶습니다. Select your USB thumb drive from among the list. all of the complaints are "'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. NOTE: There are no issues using SQL Server 2019. You can see that inserts with 100 parallel sessions are 16% slower for a table with the optimized sequential key. Herman<T>. My inclination is to. 2. See here. You can change the encoding in VSCode. The default is OFF. 1 のデータベースエンジンの新機能として「optimize_for_sequential_key」というインデックスのオプションが追加されました。 このオプションは、インデックスへの挿入を行う際に発生する Last page insert によるページラッチの競合を改善する効果の. Erik Darling shows us how to enable the Optimize for Sequential Key setting on an index:. m5. Platforms enabled with Intel® Time Coordinated Computing (Intel® TCC) deliver optimized compute and time performance for real-time applications, which include support for IEEE* 802. And no errors, had a try catch block around logger code previously. Without. The major difference between sequential and random writes is the order in which data is written to the storage device. Reload to refresh your session. Note: There are multiple files available for this download. Please note that this is not a desurveyed dataset and typically a mining package would be needed to view drill hole traces with assays. 2. An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming. DATEADD ( datepart, number, date) The datepart parameter specifies on which part of the date to return a new value. You’ll find this. For a little more detail, all of the complaints are "'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE. The last page insert issue affects SQL Server performance negatively on the intensive insert operation. The console app has this in program. 0-beta. Seeking to the end of the file, or at random locations, is similarly slow. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. 2095. Archived Forums 101-120 >. Msg 155, Level 15, State 1, Line 17 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. I am guessing you want to convert a DATETIME into a DATE value so you need the CONVERT function. There is no need to block the foreign key lookup because the ParentID attribute is not affected by the concurrent update. I need to set OPTIMIZE_FOR_SEQUENTIAL_KEY = ON for several of my PKs on tables in Azure SQL Databases. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement. [Area] ADD CONSTRAINT [Area_PK] PRIMARY KEY CLUSTERED ( [ID_Area] ASC SQL Server 2019 provides another option to deal with the last-page insert contention – OPTIMIZE_FOR_SEQUENTIAL_KEY. This may happen even if it runs successfully in SSMS or Azure Data Studio. indexes has a bit column named optimize_for_sequential_key. It will change scheduling so that a thread which is more likely to finish within a quanta (4 ms) will get priority in the queue, hence reducing expensive context switching. There is rarely a single consideration that dominates all others. ALTER INDEX ALL ON Production. Evaluate data. sql的故障，或者涉及到更多的问题（SQL Server Express DB -> SQL Server. OPTIMIZE_FOR_SEQUENTIAL_KEY = { ON | OFF } Applies to: SQL Server (Starting with SQL Server 2019 (15. そのネットワーク内にJMeterサーバ・JMeterクライアント・SQL Serverをつくる. key1) JOIN c ON (c. You signed in with another tab or window. First, clustered indexes store data in order. , . Deltek Vantagepoint 5. 2. Unfortunately functionality around the. Course Description. It will likely not reduce the accumulated wait, but it will likely. I have escalated this gap in the software to our development team who have advised. Giving the foreign key check its own optimized access method avoids logically unnecessary lock contention. If you like what you see here, you'll love my advanced performance tuning training:take a look at the new OPTIMIZE_FOR_SEQUEN. We then update all of the data back to the main table and have added deadlock retry code on that update. 2. [Claims] CROSS APPLY OPENJSO. I wanted to use MOD function in SQL Server 2008R2 and followed this link but still got the message: 'MOD' is not a recognized built-in function name. Receive error This new feature is called OPTIMIZE_FOR_SEQUENTIAL_KEY and it is intended to reduce the latch contention. The issue arises from a discrepancy between the version of SQL server utilized in DevOps and the SQL script generated locally. It is not on by default because it is intended for use only. Within each partition, you should write the rows sequentially by primary key. Solution. That’s awesome, because a whole lot of changes to indexes require you to rebuild them. Note that. 5. USE [master] GO ALTER DATABASE [SQLAuthority] SET COMPATIBILITY_LEVEL = 150 GO. CREATE VIEW view_name AS SELECT * FROM table_name. This is not possible in the Syntax for disk-based tables. DECLARE @m INT SET @m = MOD(321,11) SELEC. To maximize performance, you must define the keys in the table that support the code that you run. shc: DB 1 (running OK) ALTER TABLE [dbo]. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized ALTER TABLE option. gitattributes","path":". Please note that the following script will only work on the SQL Server 2019. Column sys. The target is: add in table missing items, and do nothing if exist, all based on this unique column. Running the code in SSMS against Azure SQL works perfectly, as expected. *ls is not a recognized table hints option. When Both Sides is selected, a dialog box appears after the first sides are scanned. Reserved key words, such as “grant”, are never allowed as identifiers. Click on it then it will open a prompt at the top to save with encoding. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized ALTER TABLE option. 1 answers. 0 when database on SQL Server 2017 or below. Right Click on. And here is the idea behind the creation of the OPTIMIZE_FOR_SEQUENTIAL_KEY clause: Check the rate at which new threads are allowed to request latch ; Favor threads that can keep througput high. optimize_for_sequential_key is present in documentation at least for servers 2016 and 2017. 0 when database on SQL Server 2017 or below. I find you have Create New link in Enrollments index page, so I make some change in line 10. . You’re the kind of admin who’s constantly facing new performance challenges on different servers. Convenções de sintaxe de Transact-SQL. mysql库中删除了大量的数据后，您可能会发现数据文件尺寸并没有减小。这是因为删除操作后在数据文件中留下碎片所致。optimize table 是指对表进行优化。如果已经删除了表的一大部分数据，或者如果已经对含有可变长度行的表(含有 varchar 、 blob 或 text 列的表)进行了很多更改，就应该使用 optimize. Though the application of certain sulfur silane-modified HTT lignin, in particular bis(3-triethoxysilylpropyl)tetrasulfide, improves the in-rubber properties relative. add the table as described before. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. Votes_Insert SET(OPTIMIZE_FOR_SEQUENTIAL_KEY = ON); Get Back To Work. MAXDOP = max_degree_of_parallelismDATE is a DATATYPE not a function. shc: DB 1 (running OK) ALTER TABLE [dbo]. Click Execute(F5) 4. took 45 mins to create the new index with the new definition which caused CPU to spike to 100% while active queries were trying to come through. when I take the following steps: 1. However, that was for SQL 2016 &. The login for the current connection must be associated with an existing user ID in the database specified by database_name, and. Column name or number of supplied values does not match table definition. The following command shows how to check the statistics: select * from sys. After opening CreaCodeX App enter your user and password and click Login. Right Click on table > Script Tables as >. If you like what you see here, you'll love my advanced performance tuning training:take a look at the new OPTIMIZE_FOR_SEQUEN. . track table. If you like what you see here, you'll love my advanced performance tuning training:take another look at OPTIMIZE_FOR_SEQUENTI. NOTE: There are no issues using SQL Server 2019. Cloning only a subset of the repo (with sparse checkout) You can follow the steps below to clone individual files from the sql-server-samples git repo. This answer looks like the primary key is already built. Specifies whether or not to optimize for last-page insert. The default is OFF. 2095. sql 失败还是更复杂(SQL Server Express DB -> SQL Server)?, OFF的个人空间. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. One of the replications fails with error: OPTIMIZE_FOR_SEQUENTIAL_KEY’ is not a recognized CREATE TABLE option. With optimized locking, page and row locks continue to be acquired for updates, but each page and row lock is released as soon as each row is updated. You can use it directly or can use the API to extract the printed text from images. In SQL Server 2019, a new index option was added called OPTIMIZE_FOR_SEQUENTIAL_KEY that is intended to address an issue known as last page insert contention. One imagines this could be an adaptation of Bw-Tree or Bz-Tree. Click Execute (F5) 4. If you are using EF Core to create the database, then can you post the migration generated? If the database is not created by EF Core, then the SQL for the default constraint will need to be added. Row_ID = table_name. The default is OFF. Moin Zusammen, so gut wie jeder der einen WSUS betreibt, kennt das Problem. Right Click on table > Script Tables as > Create To > New Query Window. Symptoms Consider the following. Second, clustered indexes are unique. (This is not a live class - if you want to attend live, check out my Live Class Season Pass . Ideally, however, I recommend changing that compatibility setting; 2008 has been unsupported for over 2 years, and future versions of SQL Server won't have the. MAXDOP = max_degree_of_parallelism This takes the form of an index option called OPTIMIZE_FOR_SEQUENTIAL_KEY. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. CONSTRAINT [PK_TranHeader] PRIMARY KEY CLUSTERED ( [Id] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ) GO DROP TABLE IF EXiSTS TranLine GO CREATE TABLE TranLine ( Id int not null identity(1,1), TranHeaderId int not null, Line. Insert images from above into the database table. The local script is generated based on the latest SQL server 2019, which results in errors when the versions don't match. it make this error. What if I really need an integer sequence as a key? Though it’s not recommended, in some circumstances an integer sequence key is necessary, either for legacy or for external reasons, e. You must then specify these keys correctly in your code. From the list with all your projects double click on the project you just created to open it. Unlike the solutions dealing with hash keys, partitioning or reverse indexing, this one does not change the nature of the clustered key. 文章浏览阅读6. Consulte Também. nn. Version Information Server Version: CLI Version (for CLI related issue): v2. create procedure sum_salaries ( @sum int output ) as begin declare @p_sum int, @p_sal int declare c cursor for select salary from employee. Azure Managed Instance 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. A similar issue can be seen in Microsoft Azure Query editor (preview) Expected behavior All columns metadata should. found = False. Next generation guids. gitattributes","contentType":"file"},{"name":". Amazon Echo/Alexa: Bing. I’m offering a 75% discount to my blog readers if you click from here. test_type as table ( id int not null, primary key clustered (id asc) with (ignore_dup_key = off, memory_optimized = on)) fails with output: Msg 155,. Ledger Entry table. + CategoryInfo : InvalidOperation: (:) [Invoke-Sqlcmd], SqlPowerShellSqlExecutionException. The DB script you submit must run. SSMS has started including the flag OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF when generating table creation scripts. Hope it helps solving your problems. Thanks! Document Details ⚠ Do not edit this section. These workloads commonly face an issue known as last page insert contention. You switched accounts on another tab or window. Coalesce Hints for SQL Queries. Advancing personalized medicine in brain cancer relies on innovative strategies, with mRNA vaccines emerging as a promising avenue. Book a Call. UNION ALL. The name of the database in which the table is created. Máy chủ SQL mục tiêu của bạn chỉ là một phiên bản cũ hơn. Applies to: SQL Server (Starting with SQL Server. Change the settings of any and all properties to customize the index. 'OPTIMIZE_FOR_SEQUENTIAL_KEY' is not a recognized CREATE TABLE option. memory_optimized is a property of the type not the primary key. NET Web API and Angular Web App. This option is intended for indexes that are prone to last-page insert contention, which is typically seen with indexes that have a sequential key, such as an. If it is not work, please let us know the progress. United States (English)We can also see the statistics using T-SQL. Dennes Torres explains the 2019 option OPTIMIZE_FOR_SEQUENTIAL_KEY which. In the snapshot folder, I found the file Area_2. 7. But it is absent in 2017 database and article below states this column appeared in ver. 6 s to 1. If we export our DB there into a Bacpac file that is stored in a blob container, not all indexes get exported. 1 answers. Power Automate can be used on a large variety of devices and browsers. Row_ID assigns a unique value to each row. . And it isn't correct, if calculated columns are shown as real columns. x)) and Azure SQL Database. When to use a Sequential model. No matter if we choose a non-unique index key, SQL Server will always make it unique by appending four bytes to the end of it. Yes, you'll need to partition the clustered index similarly for partition-level truncate. indexes. Generated files (e. Can't get much simpler than this. More precisely, this setting allows the engine to prioritize threads that are requesting exclusive latches on pages. I have a second table 2 where the auto-generated value from table 1 is a foreign key in table 2. OPTIMIZE_FOR_SEQUENTIAL_KEY aims to do two things – control the rate at which new threads are allowed to request the latch, and favor threads that are. Contribute to eldelahoz/FerreteriaXYZ development by creating an account on GitHub. Hi. 1 Answer Sorted by: 9 The system view sys. CREATE INDEX so_optimized ON dbo. , which one is better) because these are complementary channels. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. If the tenant is valid, then the HTTP request. You can then. AFAIK, OPTIMIZE_FOR_SEQUENTIAL_KEY, optional parameter of create index, is a new feature in SQL Server 2019 and therefore shouldn't be displayed when looking at 2017 documentation. One is TestDB and another is Microsoft's sample db 'WideWorldImporters-Standard'. OPTIMIZE_FOR_SEQUENTIAL_KEY = { ON | OFF } applies to SQL Server (Starting with SQL Server 2019 (15. Let’s quickly dive into the hacks you can use to optimize your ad campaigns. Specifies whether or not to optimize for last-page insert contention. , no matching to each other)Form operations. If you already use email sequence software, you know there are several types of automation that can be used to reach your audience. We have created the DBLayer folder and created 2 classes one consists of ado. For list-name, specify the authentication method list. Suggested answer. You do not need to escape backslashes if you are delimiting the string with pairs of dollar signs ($$) (rather than. Here are a few more distribution metrics and performance-related KPIs worth tracking to optimize warehouse performance. *ls' in the OPTIMIZE FOR clause must be a literal. 5 Ad Campaign Optimization HacksVSIStatL() will return the uncompressed file size, but this is potentially a slow operation on large files, since it requires uncompressing the whole file.