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  Same as SQL window function

  The purpose of the window function is to declaratively convert business reporting requirements to SQL thereby significantly improving query performance and developer / business analyst efficiency. I see real-world reports and dashboards ranging from hours to minutes, minutes to seconds after using the window function. Query large

  2022-06-01 06:17:40 Views: 263
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  [giant sequoia database Sequoiadb] after creating the cataloging group, get the error report of the cataloging group

  [problem description] after creating the catalog group, get the catalog group error report > db.createCataRG ("sdbserver1", 11800, "/ opt/sequoiadb/database/cata/11800") > va

  2022-06-01 06:17:40 Views: 267
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  How to circumvent RDS performance issues in terms of design and specification?

  [this article is from neo.Wang, author of the Cloud Community.] in start-up Internet companies, the only thing developers think about all day is to "do it." And when the company's business volume gradually increased, or even increased several times, the initial procedural problems were exposed one by one.

  2022-06-01 06:17:40 Views: 209
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  Summary of 12C new feature _ In-Memory column storage

  Official document https://docs.oracle.com/en/database/oracle/oracle-database/12.2/inmem/concepts-for-the-im-column

  2022-06-01 06:17:40 Views: 223
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  [learning] basic SQL-017-synonyms

  1. Prerequisite permissions: whether grant create synonym to scott;grant create public synonym to scott; creates public synonyms and assigns select and other permissions

  2022-06-01 06:17:39 Views: 293
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  Oracle recovery of high water mark

  Select round ((1-a.used/b.num_total) * 100jin0) percent from (SELECT COUNT (DISTINCT SUBSTR (rowid,1,15)) U

  2022-06-01 06:17:39 Views: 239
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  1-minute video tutorial solves the problem that the mac software is damaged and cannot be opened from an unidentified developer.

  When installing the Mac application, there are various situations, some prompt: "the software has been damaged and cannot be opened." You should move it to the wastebasket, with a hint: "you can't open the software because it comes from an unidentified developer." is there any solution? Don't worry, in fact, the solution is not

  2022-06-01 06:17:34 Views: 297
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  Introduction to the new features of the MySQL5.6 version

  MySQL has significantly improved its performance and availability, integration, query performance in version 5.6, and can support the next generation of Web, embedded and cloud computing applications. It has the following features: new! Online DDL / change data architecture supports dynamic applications and open

  2022-06-01 06:17:34 Views: 250
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  [Mysql] flashback-mysqlbinlog flashback version 5.6

  Brief introduction to DBA or developers, sometimes mistakenly delete or update data. The traditional method of database recovery is to use the previous backup plus the binlog before misoperation to recover the data. This method takes a long time to restore the backup, and even needs downtime maintenance, which seriously reduces the availability of the system.

  2022-06-01 06:17:34 Views: 221
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  The new 27-inch iMac is on sale! CPU, memory, price upgrade, new T2 chip

  It was reported last week that Apple will launch a new iMac product as soon as this week. Sure enough, on Tuesday night, Apple quietly launched the latest iMac. However, this major upgrade is only available in the 27-inch version, and the 21.5 inch only turns the solid-state drive into a standard (other iMac)

  2022-06-01 06:17:26 Views: 220
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  Collection of official manuals of oracle exadata database all-in-one product family

  All the winners, those who seek the overall situation first, and those who do not have a holistic view, then none of them will succeed. Recently combing the technical architecture and product system of oracle exadata database all-in-one machine, but also in order to horizontally compare and analyze other similar database all-in-one products in IT industry, from hardware configuration and software features.

  2022-06-01 06:17:23 Views: 286
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  The latest question bank and answer arrangement of OCP certification 052 exam-20

  20 、 Your database is using Automatic Memory Management.Which two SGA components must be managed manua

  2022-06-01 06:17:22 Views: 236
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  Talking about the concept of various table spaces (tablespaces) in mysql

  In mysql, various concepts of tablespaces are involved. Although these concepts are similar to Oracle in many aspects, there are also many differences. Beginners are easily confused by these concepts, thus confusing the differences and understanding of these concepts.

  2022-06-01 06:17:22 Views: 235
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  MySQL GTID replication interrupt repair process

  Error in slave: 2020-04-09T07:40:18.719203Z 16 [ERROR] Slave SQL for channel': Could not execute Write_

  2022-06-01 06:17:17 Views: 208
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  Batch remote Desktop batch Server Management

  Batch remote Desktop batch Server Management remote Desktop is a service launched by Microsoft to facilitate network administrators to manage and maintain servers. Since the introduction of the windows 2000 server version, the remote Desktop Connector has been turned on when connected to any one of the network administrators

  2022-06-01 06:17:17 Views: 280
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  Scheduler&Task&Worker&Thread&Request&Session&Connection OF MSSQL

  MSSQL has always been regarded as simple and studious, but when people have mastered the entry-level operation, they will feel very "twisted" when they understand it deeply. Especially for the students who are used to using Oracle, the root cause is that MSSQL has introduced and exposed too many concepts, details and theories.

  2022-06-01 06:17:16 Views: 245
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  Replication in Semi_Sync Replication mode

  Based on the traditional replication, there may be a problem of delay in replication from the library, so after master downtime, if master cannot be restored at this time, slave can only be used to replace master,slave in a backward state, which will lead to data loss. Can be solved by semi-synchronous replication

  2022-06-01 06:17:16 Views: 292
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  Virtual Network setting method of win10 computer

  1. Enter the computer desktop and click the settings button as shown in figure 2. Click on the network and internet3. Follow the red arrow, operation 4. Click to add v fart to connect 5. Enter the name of the connection, which can be filled in freely, the type is automatic, and the address can be contacted on the official website of 3GIPV6 6. Open the newly created section

  2022-06-01 06:17:12 Views: 288
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  MongoDB Note 8-Vernier

  Shell statement: var allpersons = db.persons.find () while (allpersons.hasNext ()) {var elemt = allpersons.next () p

  2022-06-01 06:17:12 Views: 289
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  Upgrade two oracle 11g databases under AIX platform HA dual standby environment

  Environment and demand environment two P570 machines, operating system AIX 6.1, database software oracle 11.2.0.1.0 HA dual backup mode, two instances db1 and db2 (two libraries, different business systems), usually one on each machine. Need

  2022-06-01 06:17:11 Views: 298