postgres string comparison

I. Introduction to CSTORE_FDWHTTPS://GITHUB.COM/CITUSDATA/CSTORE_FDW, this external table extension is developed by Citusdata Corporation, which uses the Orc_file format to store data in columns.　　Advantage 1: Because of the compression, so the

When developing Web applications, you often have to add search capabilities. I didn't even know what to search, so I drew a magnifying glass on the sketch. Search is a very important feature, so lucene based tools like Elasticsearch and SOLR become

I have a lazy idea. How should this good idea begin? Well, this is an appropriate little madness: Why not build our own MongoDB version directly on the basis of postgres? It sounds far-fetched, but it's simple and real. When the NoSQL movement was

Optimization of queries with any combination of multiple fields with high concurrency and low base. Optimization of highly concurrent and low-base multi-field queries with any combination 1. the problem first explains what the low-base multi-field

Tutorial on creating a MongoDB copy based on PostgreSQL, postgresqlmongodb I have an idea of laziness. How can I start with this idea? Well, this is an appropriate little crazy: Why don't we build our own MongoDB version on the basis of ipvs? It

There is no way in the world, and when there are more people, the road will become. Why can't I create a MongoDB on ipvs? After taking a series of actions in NoSQL, The Postgres community is not waiting. Postgres has been making progress:

OverviewThe content of the Jndi data source configuration is described in detail in the JNDI resource documentation. But from the feedback from Tomcat users, the details of some configurations are tricky.For commonly used databases, we have provided

I believe that people who have done unit testing will be very familiar with JUnit, today to introduce dbunit (http://dbunit.sourceforge.net/) is a dedicated database testing for JUnit an extension, it can place the test object database between a

At present, the entire Internet is evolving from the IT era to the DT era, and big data technology is helping businesses and the public to open the door to DT world. The focus of today's "big data" is not only the definition of data size, it

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