In MongoDB, time stamps are converted to common date formats in batches.

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Comparison between one-time transaction and CTE data insertion

Comparison between one-time transaction and CTE data insertion Sometimes we need to construct some data for testing, as shown below:IF OBJECT_ID (N 't14') IS NOT NULL BEGIN Drop table T14 END GO Create table T14 (t14_id INT) GO DECLARE @ I INT =

Principles and basic configurations of Oracle DataGuard

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Solution to MongoDB connection failure exceeding 1000 on CentOS6

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Definition formats of basic Oracle statements

Definition formats of basic Oracle statements Oracle built-in data typesI. character data1. char (size)2. varchar2 (size) is the most commonly used, with a maximum length of 4000 bytes.3. nvhar (size) and nvarchar (size)4. varchar (size)5. We

In CentOS 6.5, Oracle 12c is automatically started upon startup.

In CentOS 6.5, Oracle 12c is automatically started upon startup. In Linux, the Oracle Database Service is automatically started at any time by default, unlike in Windows. In Linux, You need to manually set the settings to enable automatic Oracle

Compile and install PostgreSQL9.4.1 and phpPgAdmin in CentOS 6.6

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Precautions and troubleshooting for connecting a single Oracle 11.2 instance to ASM

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How does MySQL manage multiple instances?

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Use MongoDB C # official driver to operate MongoDB

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How to install Redis in Linux

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Use pgpool to achieve high availability of PostgreSQL

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Notes for installing Oracle 11g RAC

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When ogg is started, libnnz11.so: cannot open shared object file is returned.

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Oracle Shared Server Configuration

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The size of Oracle archived logs is much smaller than that of online logs.

The size of Oracle archived logs is much smaller than that of online logs. Some users may be confused about the size of archived logs smaller than those of online logs:First, check whether your archive log files are compressed:SELECT to_char

Oracle Installation of Automatic Installation Software Package for the first time

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In-depth interpretation of sequences in PostgreSQL and their related functions, and interpretation of postgresql

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