redgate sql test

Requirements: You need to find that a customer has continuously handled the business for those days of a year. The SQL implementation is as follows::Create a table:Copy codeThe Code is as follows: create table test_num(Tyear number,Tdate ); Test Data:Insert into test_numSelect 2014, trunc (sysdate)-1 from dual union allSelect 2014, trunc (sysdate)-002 from dual union allSelect 2014, trunc (sysdate)-003 fro

a dynamic webpage, and sometimes there may be N parameters, sometimes Integer Parameters, and sometimes string parameters, which cannot be generalized. In short, as long as a dynamic webpage with parameters and the webpage accesses the database, there may be SQL injection.Example: search a pageLogon pageSubmit a comment page. Judgment process: URL with parameters passed:Http://aipai.163.com/s/trade/orderDetail? OrderId = 183004The

values (test_sid.nextval, ' Si ', ' woman ', +, default);Create a new curriculum (course) that requires:1. The fields are as follows: Course number (CID), course name (subject).2. Add a constraint to the field, respectively: the course number is the primary key, and the course name is non-empty.Sql> CREATE TABLE Course (CID int constraint COURSE_CID_PK primary key,Subject varchar2 () constraint course_subject_nn not NULL);3. Create sequence Insert Course Number column (CID), the recommended ini

A few days ago, we sawArticleThe dynamic condition query method of LINQ to SQL. The article finally selects ricom's Performance Analysis on LINQ to SQL, which says that the performance of LINQ to SQL is good, sometimes better than that of ADO. net is even better. At that time, it was hard to believe the analysis results. We should use ADO at the underlying layer

: here, both have been positioned to occupy One of the CPUs high in SQL , which can combine the efficiency of business scenarios and SQL , and whether communication with developers such as/DBA is optimized or how to optimize (By the way, it is suggested that the amount of data in the database will have a large impact on the performance gap, this test, 10W of

ShopBuilder online store get-type SQL Injection packaging (1 ~ 5) The demo test on the official website is successful. First, the get type is filtered. If (inject_check ($ _ SERVER ["REQUEST_URI"]) {die ('invalid URL! ');} Function inject_check ($ SQL) {return preg_match ("/(select | insert | delete | \. \. \/| \. \/| union | into | load_file | outfile | \ '| %

-reading indicators are reading text, ntext, image, or 2D (varchar (max), nvarchar (max) and varbinary (max.Logical reading, physical reading, and pre-reading are the reads of common data pages. Use SQL Server Management studio standard reports In SQL Server Management studio, when selecting a database server, a specific database, or security-logins, or management, the notification services or

When software development uses Microsoft sql2005 to store data, there are multiple methods to retrieve information. There are dynamically generated SQL statements and stored procedures. But is their performance the same? Download the test program and source code Test Description: The purpose of this test is to compare

Recently, many documents have been written, leading to the growth in Word and Excel usage. Considering the low efficiency of the methods used to read and write databases in the project, which affects the user experience, we decided to test whether Microsoft's newly implemented LINQ and EF can improve the efficiency. The test environment is of course my notebook. The limited speed and Hard Drive Speed mu

A virtual index is a "false" index, which is defined in a data dictionary, but does not have the corresponding index segment, that is, it does not allocate any storage space. Using Virtual indexes, developersYou do not need to wait for the index to be created, or you do not need additional index storage space, you can use it as an index that already exists and test the execution plan of the SQL statement. I

scenario, if there is a slow SQL, DBA Plus index optimization is required, how do you know if the index is valid? This needs to be tested and adjusted over and over again, you can not directly take the online database test, the general method is to build a test table in the test environment, and then copy some data fro

Text/FIG==========================================Some campus websites belong to schools, some belong to a certain school, some belong to a certain community organization, some website servers are maintained by technicians, and some websites are not maintained by special personnel, no one manages the server system after it is built, or the management is messy. Vulnerabilities that are popular on the Internet and even obsolete can be found here. Therefore, campus websites are often the targets of

Original: Test for SQL Server's execute as combined with connection poolingBrief introductionIn SQL Server, the EXECUTE AS keyword allows the current account to execute an SQL statement as another user or login in a specific context, such as a user Zhang San access to the order table, and the user John Doe does not hav

The original idea is to try to record in the SQL Server2008 operation, but even if they do not record the query SQL statement, the online search data is all about SQL 2000 (this part of the experience of welcome advice).Therefore, the performance test of SQL statements can o

Original article: http://longniezhang.blog.163.com/blog/static/146061662009719102423760/ Performance Test Analysis of ado.net, LINQ to SQL and Entity Framework Recently, many documents have been written, leading to the growth in Word and Excel usage. Considering the low efficiency of the methods used to read and write databases in the project, which affects the user experience, we decided to

Writer: demonalex [at] dark2s [dot] org Recently, some customers have asked me about how to defend against SQL injection.Case A: Do you want to modify the code? It's too 'hard' and requires some technical skills...Case B: Buy an additional 'application layer firewall 'product? Relatively 'soft', but how can we solve the cost problem ???Currently, anti-injection scripts are circulating on the Internet to solve this problem. Indeed, the technical conten

Label:Playing with Oracle is a bit more focused on the shared pool, especially the library cache, which can really get a lot of performance gains after using bound variables (precompiled SQL). Now after the turn to MySQL, especially innodb a lot of things can also be with Oracle to the number, just like innodb_buffer_pool_size similar to Oracle's database buffer Cache,innodb_log_ Buffer_size is similar to redo log buffer, but innodb_additional_mem_poo

To learn how hackers intrude into the system, we recommend that you test the results first when writing php code. The focus of SQL injection is to construct SQL statements. Only SQL statements can be used flexibly. Statement can be used to construct the cou injection string. After completing the course, I wrote some no

= 16 milliseconds, elapsed time = 547 milliseconds.CPU time = 47 milliseconds, elapsed time = 491 milliseconds.CPU time = 32 milliseconds, elapsed time = 436 milliseconds.CPU time = 47 milliseconds, elapsed time = 416 milliseconds. PS: In doing a topic today, the manager gives a difficult problem, although made, but performance is not optimized. Three layers of nesting are used. Now in particular to summarize: large table with the small table when the association query, involves nested query, f

Since the previous time to test the performance of MySQL running on all-flash arrays, a period of time was studied, and two tools were tested: One is MySQL's own sql-bench, and the other is sysbench. The environment used in this procedure is Redhat Enterprise Linux 7.1, MySQL 5.6.25, and the test tool is the Sql-bench