* indexes can be explained. * * Note: names returned by this function should be "raw"; the caller will * apply quoting if needed. Formerly the convention was to do quoting here, * but we don't want that in non-text output formats. */static const char *explain_get_index_name(Oid ...
读取control byte:从source中读取一个control byte,获取压缩信息。 检查control bit:查看control bit,判断是否有重复序列。 如果有重复序列:将control bit后面的偏移量和长度信息解析出来,根据偏移量在已经解压的dest中找到对应的重复序列,将其复制到dest的当前位置。 如果没有重复序列:将source中的下一个字节直接复制到...
《PostgreSQL 9.5's Upsert Feature Explained》 介绍: PostgreSQL 9.5新特性Upsert解释 . 《PostgreSQL database replication》 介绍:PostgreSQL的复制. 《YeSQL: Battling the NoSQL Hype Cycle with Postgres》 介绍: YeSQL: Battling the NoSQL Hype Cycle with Postgres,博客的其他内容也不错. ...
PostgreSQL Logs Explained: Logging Configuration Tutorial Posted on July 5, 2022 by Gaurav Yadav Table of Contents What Are PostgreSQL Logs? PostgreSQL Log Location Syslog CSV Log Windows Event Log Docker What Is Important to Log? Slow Query Thresholds Statement Duration Sampling PostgreSQL Log Levels...
PostgreSQL data types explained Your PostgreSQL users have a generous number of native data types at their fingertips, including JSONB and PostGIS, and they can also add new PostgreSQL data types easily. Each data type is designed to support a unique purpose, such as full-text search and ...
are enabled, as explained below: * To build the server programming language PL/Perl you need a full Perl installation, including the "libperl" library and the header files. Since PL/Perl will be a shared library, the "libperl" library must be a shared library also on most platforms. This...
This is also explained in the documentation. * By default, PostgreSQL is configured to run on minimal hardware. This allows it to start up with almost any hardware configuration. The default configuration is, however, not designed for optimum performance. To achieve optimum performance, several ...
PostgreSQL是一种开源的关系型数据库管理系统(RDBMS),它支持在一个字段中存储多个值的特性。这种特性被称为数组(Array)或者多值字段(Multivalue Field)。 在Post...
In Example 4, the resilvering scripts are also explained in detail.Example 3 Example for the Designated Primary This example shows the required archive and recovery configuration for the designated primary server.The archive command in postgresql.conf:...
This document describes the installation of PostgreSQL using the source code distribution. (If you are installing a pre-packaged distribution, such as