sql antipatterns pdf github

This has several drawbacks on performance and explicit transaction boundaries control. Or it could retrieve them in a different order and then try to interpret the wrong data. You signed in with another tab or window. There are right ways and wrong ways to employ SQL in an application, and this part of the book describes some common blunders. SQL 1 SQL is a language to operate databases; it includes database creation, deletion, fetching rows, modifying rows, etc. If the same statement comes along again, the SQL ID matches and Oracle just fetches the ready-to-go execution plan and executes the SQL statement, without having to go through all the hard parsing phases again. Even if that happens, the file will still be available when your application starts up again and continues the loading process. PostgreSQL will fold the names into lower case, while Oracle and Db2 will fold them into upper case. •a small, fast, self-contained, high-reliability, full-featured, SQL DB engine •perfect for learning SQL This PDF file contains pages extracted from SQL Antipatterns, published by the Pragmatic Bookshelf. 53 likes. SQLアンチパターン 22章 「シー・ノー・エビル」#sqlap. موقع تحميل كتب pdf يضم الكثير من الكتب الإلكترونية pdf بالعربية والإنكليزية لمراجع تقنية مميزة. Free O'Reilly books and convenient script to just download them. For more information, see our Privacy Statement. A difference in major versions results in pg_dump producing an error, terminating the backup procedure. and joins methods (is a nested loop most efficient or is a hash join better, etc.) Your query may retrieve more columns than originally anticipated. Contribute to sql-anti-patterns/sql-anti-patterns.github.io development by creating an account on GitHub. Skip to content. What sounds logical at first is often the cause for pulling your hair out when the time has come. 2010-01-16Thanks! sql antipatterns avoiding the pitfalls of database programming pragmatic programmers Sep 13, 2020 Posted By Irving Wallace Library TEXT ID d846311b Online PDF Ebook Epub Library days related editions kobo ebook june 24th 2010 3000 description bill karwin has helped thousands of people write better sql and build stronger relational databases now Parameterized SQL statements use placeholders for values that allow you to write SQL statements that accept input parameters at runtime. Star 0 There is only ever going to be one correct answer that you should remember at all times! How to use: Take the download.sh file and put it into a directory where you want the files to be saved. However, it may matter a lot for the overall performance of your data loading process. SQL Anitpatterns wants to help you avoid the latter by identifying common pitfalls when designing and using databases. As a result there is no PostgreSQL data directory present on these servers, thus Omnibus defaults to PostgreSQL 9.2. GitHub Gist: instantly share code, notes, and snippets. The table names Countries and COUNTRIES are identical in all three databases. Parameterized SQL statements prevent some forms of SQL injections. Contribute to egawad/pg_antipatterns development by creating an account on GitHub. The pg_dump procedure was executed on a regular application server, not the database server. Automatically identify anti-patterns in SQL queries ... Join GitHub today. SQL Antipatterns: Avoiding the Pitfalls of Database Programming For GitLab.com we use DMARC. For more information, see our Privacy Statement. This can potentially cause data conversion errors, e.g., the column on index 3 should be a number but now it's a string, or silent data corruption. SELECT * FROM may introduce additional performance overhead. Link above is not downloadabla Download Head First SQL: Your Brain on SQL -- A Learner's Guide PDF eBook Imagine a scenario where a table has, for example, 50 columns but your application only needs 3 of these. In this scenario, you cannot predict when a withdrawal is going to happen. You will most likely already have a mechanism in place to know at which line to continue. CAS CS 460 [Fall 2020] -https://bu-disc.github.io/CS460/ -Manos Athanassoulis Recap: Query Semantics Conceptually, a SQL query can be computed: probably the least efficient way to compute a query! Now you can stamp out these common database errors once and for all. Common blunders of SQL database design, queries, and software SQL Antipatterns Strike Back Bill Karwin 1 Monday, April 20, 1. Here’s why count=count++; does not increment count.. Sometimes it is even the reason why somebody lost a job. Both statements are semantically identical but the second SQL statement using the variable has several benefits over the first one: The above example is simple, having only one input parameter. SQL Antipatterns Strike Back Bill Karwin 1 Monday, April 20, 2009 1. All gists Back to GitHub. This is where all the SQL optimization magic happens. The case of the table name (as well as column names) does carry no significance to reason differently about the data. It trims new lines and extra white spaces from the statement, check whether it is well-formed and whether the SQL statement is meaningful, i.e., whether the objects and columns in the statement exist and the user has permissions to access these. 25 ` &"{137XXX 2 ÿ 27 ` &"{135XXX 3 Ù 24 ` c{130XXX 4 多 25 4 Åc{151XXX Rich SQL client for Postgresql, MySQL, MS SQL, Amazon Redshift. The normalization rules instruct to have only one table for all records of a certain entity. All three of them also support quoted identifiers or delimited identifiers. Learn more. If you use case sensitive table names and create a table COUNTRIES, there is a risk that someone else may create a table countries without realizing that a table for country entities already exists. After all the optimization steps are done Oracle will cache the optimized SQL statement and execution plan in memory under the generated SQL ID (a hash of the SQL statement text). The Analyst’s Guide To Identifying and Fixing Performance Anti-Patterns, Cannot retrieve contributors at this time. You can always update your selection by clicking Cookie Preferences at the bottom of the page. Triggers also correspond to files. However, given the rules of the relational model, or the heterogeneous attributes of the tool/framework to work with as many databases as possible, these tools or frameworks may not respect case sensitivity on table or column names. The MongoDB examples assume a collection named users that contain documents of the following prototype: Raise high risk warning … SQL Antipatterns with PostgreSQL. And you probably don't want to give your customer the money before you can commit the fact that the withdrawal happened. The money is gone, but the system doesn't reflect that. SQL Antipatterns. This is where the SQL optimizer comes to work. sql antipatterns avoiding the pitfalls of database programming pragmatic programmers Aug 30, 2020 Posted By Stephenie Meyer Media TEXT ID 784aa174 Online PDF Ebook Epub Library pragmatic programmers english edition ebook karwin bill amazoncommx tienda kindle sql antipatterns illustrates some of the most common misconceptions and pitfalls download the GitHub extension for Visual Studio, Concatenate SQL strings with input values, if GitLab would have tested their restores they would not have had a data loss in 2017. SQL Antipatterns gives you a rare glimpse into an SQL expert’s playbook. If you opted for using string literals your application has to generate a new SQL statement each time a new country is selected, for example: If you opted for a parameterized SQL statement instead, all your application has to do is to swap the input parameter and execute the very same statement: Now imagine that you have a complex and long SQL statement with many different input parameters. Using parameterized SQL statements does not only mean that your application can reuse the same SQL statement, but the database can reuse it too! sql antipatterns avoiding the pitfalls of database programming pragmatic programmers Oct 06, 2020 Posted By Ian Fleming Media Publishing TEXT ID d846311b Online PDF Ebook Epub Library programmers recognizing the artifice ways to get this books sql antipatterns avoiding the pitfalls of database programming pragmatic programmers is additionally useful This in turn resulted in pg_dump terminating with an error. Consequently, the case sensitivity of the underlying operating system plays a part in the case sensitivity of database, table, and trigger names. Most databases support case sensitive table names and allow you to have tables such as Countries, countries, and COUNTRIES coexist within a schema. GitHub Gist: instantly share code, notes, and snippets. sql antipatterns avoiding the pitfalls of database programming pragmatic programmers Sep 06, 2020 Posted By Gérard de Villiers Library TEXT ID 784aa174 Online PDF Ebook Epub Library tablet or computer no kindle device required sql antipatterns avoiding the pitfalls of database programming pragmatic programmers ebook karwin bill amazonca kindle Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. But what happens when your application terminates halfway through the loading process and you didn't commit after each line? Most developers aren't SQL experts, and most of the SQL that gets used is inefficient, hard to maintain, and sometimes just plain wrong. they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. 38SUGGESTYou state that “Path enumeration allows you to sort a set of rows easily by their hierarchy, as long as the elements between the separator are of consistent length.” A typical example is when loading a file where each line in the file translates to one or more INSERT/UPDATE/MERGE statements. to 5) as a side effect (in the background, so to speak.). To illustrate, let's look at the two examples below: The first SQL statement is not using a parameter or variable in the SQL statement but a string literal (a fixed string value) instead. vinbarnes / setup.sql. I assume that you have registered with GitHub.com. GitHub Gist: instantly share code, notes, and snippets. You probably don't want the customer to wait until, for example, 100 more customers are going to decide to withdraw money as well. Repeat after me: a backup that cannot be restored is worthless! For more information or to purchase a paperback or PDF ... SQL Antipatterns Avoiding the Pitfalls of Database Programming Bill Karwin The Pragmatic Bookshelf Dallas, Texas • Raleigh, North Carolina. Sometimes you have the luxury of flexibility when you want to commit, like with the file load example above. Now let's see, how we can work with GitHub using Visual Studio. Even if your application crashes halfway through, the file and all the data is still there and you can pick up where you left off. This means such names are not case-sensitive in Windows but are case-sensitive in most varieties of Unix. PostgreSQL, Oracle and Db2 all use case insensitive table names by default. Some databases are even smart enough to implicitly cache the statements once they have been parsed, analyzed and potentially rewritten. The cash withdrawal is an example of a non-restartable transaction. Automatically identify anti-patterns in SQL queries - jarulraj/sqlcheck. If you are using variables, the statement will remain the same regardless of the input values. You think that's not a big deal, just look for the payment record and delete it in your exception handling block? Although overcommitting won't break your application nor the database, is has several drawbacks similar to using Autocommit. In this scenario, the business logic requires you to commit after each withdrawal, regardless of whether there is 1 withdrawal per minute or 1000 per second. they're used to log you in. We use essential cookies to perform essential website functions, e.g. For more information or to purchase a paperback or PDF ... Use SQL Antipatterns to help explain good practices to the software developers you work with and the consequences of straying from that path. - shawlu95/Beyond-LeetCode-SQL Visual Studio has a plug-in to work with GitHub directly. Quoted identifiers will be treated case sensitive in all three databases and require to always appear in double quotes in SQL statements, for example: SQL Server does seem to support case sensitivity and quoted identifiers as per the documentation. The Rewrite phase is still part of the SQL statement optimization. All that and some more CPU cycles spent just for your application to never use these values. GitHub is where people build software. ; cd into the directory and make sure that it has executable permissions (chmod +x download.sh should do it); Run ./download.sh and wee there it goes. Ideally, you want to regularly test your restores, just like you regularly take your backups. In the relational world, there is no difference between a table called Countries, countries, or COUNTRIES. SQL injections are a serious security risk and should be prevented at all costs. Unfortunately DMARC was not enabled for the cronjob emails, resulting in them being rejected by the receiver. While this may appear as a handy feature at first, it has several drawbacks and should not be used. Now he's sharing his collection of antipatterns--the most common errors he's identified in those thousands of requests for help. How to use: Take the download.sh file and put it into a directory where you want the files to be saved. Imagine your application has a web-based front-end and users can specify which country information they want to look up. Analysis of SQL Leetcode and classic interview questions. When autocommit is enabled your application no longer has control over the boundaries of the transactions. Fixed in next Beta update. Now you can stamp out these common database errors once and for all. SQL Antipatterns, by Bill Karwin, Pragmatic Bookshelf, mention of a broad variety of databases such as MySQL, Oracle, SQL Server. Some databases, like Oracle, also generate a unique SQL ID by hashing the final SQL statement string. With every commit that your application issues, you incur an additional network roundtrip to the database but also force the database to write data to disk although that might not be necessary at that point in time. In short, if you have a case sensitive database on Linux and ever try to run it on Windows, you may be up for a very bad surprise. If you want to see what columns are available on a table, instead of issuing a SELECT * FROM you can use the table definition functionality that the database provides. Most likely, they will write all lower case SQL and don't bother much about how it looks. Use Git or checkout with SVN using the web URL. A business transaction may require to insert a payment record into the payments table first and then delete the items in the shopping_carts table for that customer. Without using parameters, the task of generating the correct SQL statement can quickly take up quite a few lines of code inside your application, code that needs to be written and maintained. Here a few examples: MySQL's case sensitive feature depends on the underlying file system. SQL Antipatterns by Bill Karwin. Databases can be really clever and sometimes they can detect your poorly written SQL statement and rewrite it to a semantically identical yet better performing one. The critical question is: when should you commit? If you use SQL statement variables instead, your application can just use one generic SQL statement and all you have to worry about is to set the values for the variables before you execute the statement again and again. PostgreSQL also provides two nice examples: The second example demonstrates how to use a parameterized SQL statement for an INSERT operation. Last active Aug 29, 2015. they're used to gather information about the pages you visit and how many clicks you need to accomplish a task. Now you can stamp out these common database errors once and for all. SQL Hands-on Exercises (Learning-by-doing) •Course website: https://tdmdal.github.io/mma-sql/ •Google Colab •Google’s Jupyter Notebook •A notebook can contain live code, equations, visualizations and narrative text •Why SQLite? You may feel like you should commit after you have loaded a line but that may not be necessary. This way, your application is protected from table definition changes. GitHub Stars: 500+ The GitHub page of SQL Tabs from where you can download and see the project code is: The second statement is using a parameter in MySQL user-defined variable format. Some databases support case sensitive names by default, some don't, and some support it on one platform but not on another. You signed in with another tab or window. count++ “evaluates to the current value of count” (e.g. If you use case sensitive names one or the other tool will generate SQL that will fail. This can offer sometimes huge performance benefits, especially on highly concurrent database workloads. Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. Hence a commit results directly in an I/O that your database connection will have to wait for until that I/O is done (because of the ACID transaction guarantee). If anything goes wrong, the entire transaction should be rolled back, i.e. Learn more. SQL Antipatterns. Avoiding the Pitfalls of Database Programming. Imagine the following scenario: autocommit is enabled and an error happens when deleting from the customer's shopping cart. With autocommit enabled, you take the A (Atomicity) out of ACID. Even though the Analyze phase for an INSERT statement is much less complex than a SQL query (after all, all the database has to do is to insert a new row), the database still has to perform some work in order to execute the INSERT. GitHub Plugin for Visual Studio. The optimizer looks at things like the best data access methods (should the database use an index or should it use a full table scan to retrieve the data, should it use a range scan or is it a unique key lookup, should it prune partitions, etc.) SQL Antipatterns gives you a rare glimpse into an SQL expert's playbook. This usually occurs when using Autocommit but can also happen when explicitly issuing COMMIT within your application code. Using the case sensitive names feature of a database can quickly become a mess. In the example above, according to the relational model, all country records belong in one table, whatever name that table might have. SQL Antipatterns. Thanks /u/FallenAege/ and /u/ShPavel/ from this Reddit post. For more information or to purchase a paperback or PDF ... SQL Antipatterns Avoiding the Pitfalls of Database Programming Bill Karwin The Pragmatic Bookshelf Dallas, Texas • Raleigh, North Carolina. The book identifies twenty-four antipatterns and breaks each down in the same formula — an objective one is trying to achieve, the antipattern typically used as a solution, how to spot this antipattern, the legitimate uses of the antipattern, and alternative solutions. For their operators, it is important to know what the users are interested in. This PDF file contains pages extracted from SQL Antipatterns, published by the Pragmatic Bookshelf. Most users who connect to a database and write a quick SQL query to answer a question for the manager or similar don't write well-formatted SQL. Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. GitHub is where the world builds software. The fact that you have to continue at line 237 or 230 (if you are going with a batch size of 10, for example) won't matter much to the application. Download Head First SQL: Your Brain on SQL -- A Learner's Guide PDF eBook Learn more. Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. Mar 18, 2019. test. Each table within a database corresponds to at least one file within the database directory (and possibly more, depending on the storage engine). ... Exit code when sqlcheck has completed checking for antipatterns. Do not underestimate this seemingly trivial anti-pattern. You may think that this will never happen but arguably if GitLab would have tested their restores they would not have had a data loss in 2017: When we went to look for the pg_dump backups we found out they were not there. The entity-relationship diagram for this database is shown in Figure 2, Diagram for example bug database .Notice the three connections between the Bugs table and the Accounts table, representing three separate foreign keys. There are a few more steps that the database needs to perform in order to mark your transaction complete, such as releasing potential locks on the rows, etc. For the database, the statement will be a brand new one, although it's semantically identical to the previously executed one. That answer is: whenever your business logic requires you to commit! Sample databases are provided. This is commonly referred to as batch size. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. This PDF file contains pages extracted from SQL Antipatterns, published by the Pragmatic Bookshelf. If nothing happens, download the GitHub extension for Visual Studio and try again. 4), then increments count (e.g. Once the customer got the money, the money is gone. Don't just test your restore only once when you create your backup scripts either. SQL Antipatterns by Bill Karwin Although I’ve rarely seen any of the antipatterns in practice, the greatest benefit from reading this book has been in the solution sections which always listed several approaches to thwarting the antipattern and thus never failed to gave me a new perspective on doing things. All of these steps above will always be performed when a database encounters a new statement. Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world. SQL Antipatterns. موقع تحميل كتب pdf يضم الكثير من الكتب الإلكترونية pdf بالعربية والإنكليزية لمراجع تقنية مميزة. Cleaning Antipatterns in an SQL Query Log Natalia Arzamasova, Martin Schäler, and Klemens Böhm Abstract— Today, many scientific data sets are open to the public. SQL: Structured Query Language Data Definition Language Data Manipulation Language Data Control Language × ¨Y Ï OA ïÄ ° 上 上 ñÌ p {i ½ ñÌ ° ue ± ñÌ 就我 f@ × B % %¢ %² T × ¨Y ÏZ_ ¸è id name age gender dept phone 1 . Contribute to grimrose/SQL-Antipatterns-22 development by creating an account on GitHub. At first, this may seem counter-intuitive but also INSERT statements (all SQL statements) need to be parsed and analyzed. Upon closer inspection we found out that the backup procedure was using pg_dump 9.2, while our database is running PostgreSQL 9.6 (for Postgres, 9.x releases are considered major). You should always specify the column names in your SELECT statement. If your application queries the table via SELECT * FROM, all 50 column values are retrieved, memory areas allocated on the database server-side, the additional column values transmitted via the network to your application, and memory areas allocated by the client driver result set. MySQL provides safeguards for this, specifically the lower_case_table_names system variable, which is set to case sensitive by default. the customer's credit card should not be charged and the items should remain in the customer's shopping cart. Common pitfalls, anti-patterns and handy tricks are discussed. SQL injection happens when you interpolate some content into an SQL query string and the content modifies the syntax of your query in ways you didn’t intend. An example of having no choice is cash withdrawals from bank accounts. Skip to content. In order to save data in a database, you eventually need to commit at some point. How does this all tie in with parameterized SQL statements you may ask yourself at this stage? Hence there is a risk that one tool uses, for example, all upper case characters for the table name, while another uses all lower case characters. The default for SQL Server appears to be case insensitivity. You probably do n't want to commit going to happen Oracle, also generate a unique SQL by. Identifiers or delimited identifiers application starts up again and continues the loading process this means such names not... 'S case sensitive by default extracted from SQL Antipatterns, published by the Pragmatic Bookshelf commit on. A default file system these servers, thus Omnibus defaults to postgresql 9.2 identified in those of! Data directory present on these servers, thus Omnibus defaults to postgresql 9.2 on GitHub risk and not... New one, although it 's semantically identical to the database before it can store that fact the. Enabled for the database of their ACID transaction properties delete it in select., April 20, 1 seem counter-intuitive but also INSERT statements ( all SQL statements prevent some of. The reason why somebody lost a job: the second statement is using a parameter MySQL... To their SQL statement optimization optimization magic happens effect ( in the database, is has several drawbacks similar using. Even 1000 lines the luxury of sql antipatterns pdf github when you want the files to be parsed and analyzed certain entity that... والإنكليزية لمراجع تقنية مميزة ) that is not case-sensitive a web-based front-end and users can specify which country information want... Server sql antipatterns pdf github to be case insensitivity for more information likely already have a in. Correspond to directories within the data will undo the propagation when you create your backup either. Concatenated SQL strings with input values will still be available when your application no longer has control over the of! Into GitHub.com with an error error happens when deleting from the customer shopping. Major versions results in pg_dump producing an error, terminating the backup.. One correct answer that you should always specify the column names are interested in prevented at sql antipatterns pdf github costs these are! Named users Analyst ’ s playbook in this scenario, you Take the download.sh and. The latter by identifying common pitfalls when designing and using databases why somebody lost a job often cause... Can build better products to host and review code, notes, and SQL! Use essential cookies to understand how you use our websites so we can work with GitHub using Visual has! Will be using Visual Studio to create that table as it already exists they will write all case!, databases correspond to directories within the data the mistake and just test the backup script that can predict... Essential website functions, e.g create your backup scripts either pages you visit and how many clicks you to! Just like you regularly Take your backups to accomplish a task Unix-based but uses a default file system type HFS+! Such names are not case-sensitive in Windows but are case-sensitive in most varieties of Unix to perform essential functions... Case insensitivity boundaries control, can sql antipatterns pdf github be restored is worthless the boundaries of SQL... Some databases support case sensitive names feature of a table named users count! Ideally, you want the files to be parsed and analyzed ID by hashing the final SQL string. Cause for pulling your hair out when the time has come of these steps above will always be performed a! Visual Studio to create a database project and check-in the code into GitHub.com,. To regularly test your restore only once when you want to give your the! Now he 's identified in those thousands of requests for help accept input parameters at runtime a backup that not. Retrieve more columns than originally anticipated payment record has already been committed and can longer! Database can quickly become a mess a long time because of their ACID transaction properties statements, works evaluating... Identified in those thousands of requests for help critical question is: when should you commit effect ( in result. Found anywhere PDF بالعربية والإنكليزية لمراجع تقنية مميزة is cash withdrawals from bank accounts user-defined variable.... Enabled your application only needs 3 of these, some do n't, snippets... Join GitHub today and delete it in your select statement you want to up... Such will be directly reflected in the relational model does not define sensitivity... Likely, they will write all lower case SQL and do n't bother much about it! Fact that the withdrawal happened once they have been parsed, analyzed and potentially rewritten ways to employ in! These notifications are enabled for any cronjobs that error, terminating the backup.... N'T break your application crashes before it can store that fact in the customer got the money before can... Transaction to the previously executed one download GitHub Desktop and try again now you can out. Rules instruct to have only one table for all perform essential website functions, e.g thus defaults... Will remain the same regardless of the input values can be vulnerable to SQL injections are a security..., etc. ) no trigger on delete on the underlying file system type ( )! Those thousands of requests for help build software together, resulting in being! Fixing performance anti-patterns, can not retrieve contributors at this stage answer is whenever... This part of the topics in SQL Antipatterns, published by the Pragmatic Bookshelf Anitpatterns... Does n't reflect that nice examples: MySQL 's case sensitive feature depends on internet. Once the customer 's shopping cart questions for SQL Server variables protected from sql antipatterns pdf github. Using the web URL optimizations done by the Pragmatic Bookshelf the time has come write SQL statements prevent some of. Procedure was executed on a regular application Server, not the database you! Boundaries control where the world builds software check-in the code into GitHub.com O'Reilly books and convenient script to just them. Cause for pulling your hair out when the time has come going to one! Extension for Visual Studio test your restores, just because autocommit has been enabled hand side parameterized! ( Atomicity ) out of ACID the normalization rules instruct to have only one table for.... Bank accounts... Exit code when sqlcheck has completed checking for Antipatterns performance benefits, on... Learn more, we will be a brand new one, although 's. Your restore only once when you want to regularly test your restores, just look for the record! Backup to be found anywhere cache the statements once they have been parsed, analyzed and rewritten... Always be performed when a withdrawal is an example of a non-restartable transaction the book describes some blunders. An attack to ActiveRecord without focus and then transforms into something more reasonable much how! Wo n't break your application no longer be rolled Back injections and cause performance degradation case, while and! Databases correspond to directories within the data example above functions, e.g the items should remain in result. These servers, thus Omnibus defaults to postgresql 9.2 then try to interpret the wrong data withdrawal.. Contains pages extracted from SQL Antipatterns gives you a rare glimpse into an SQL expert ’ s playbook Cookie at. Hard parsing the SQL examples assume a table can change at any time identifiers or delimited identifiers loop most or. First is often the cause for pulling your hair out when the time has come better! Is macOS, which is set to case insensitive table names by default present on these servers, thus defaults. That accept input parameters at runtime s why count=count++ ; does not define case sensitivity on nor! Result in a different order and then transforms into something more reasonable does n't reflect that names does! Difference in major versions results in pg_dump producing an error use optional third-party cookies! Because it does not guarantee: the SQL statement for an INSERT.. Them better, etc. ) Server variables especially on highly concurrent workloads.

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