Appendix C.SQL 关键字 Table C-1列出了所由在 SQL 标准和PostgreSQL 8.1 里是关键字的记号。 你可以在Section 4.1.1里找到相关的背景信息。 SQL 里有保留字(保留)和非保留字之分。根据标准, 保留字是那些真正的关键字;我们决不能用它们做标识符。 非保留字只是在特定的环境里有特殊的含义,而在其它环境里...
Today, we're going to talk about fuzzy text search in Postgres with LIKE/ILIKE, trigrams, levenshtein distances, as well as case-insensitive pattern matching. Share this episode: Click here to share this episode on twitter, or sign up for our newsletter and check out the newsletter archive ...
MySQL is case-insensitive by default. Postgres is case-sensitive by default. MySQL allows to join tables from different databases. Postgres can only join tables inside a single database, unless using the FDW extension. Operability Due to the underlying storage engine design, Postgres has an infamo...
It doesn't. It simply folds to lower case rather than upper case. If things are truly case-insensitive, this should be of no consequence. The fault is with your program components that are insisting on upper case rather than accepting either case. Perhaps you need some intermediate component ...
ILIKEis a case insensitiveLIKEstatement sql.select("text").from("example").where(sql.ilike("text","%EASY%"))// SELECT text FROM example WHERE text ILIKE '%EASY%' Supportsnode-postgrestoPostgres()conventions to format Javascript appropriately for PostgreSQL. Seepostgres-intervalfor an example of...
like通配符详细介绍 mysql 约束 T-语句之case when then 条件判断 Ibatis+MySql Mysql的锁 mysql中delimiter作用 ibatis模糊的like '%$name$%'的sql注入避免。 mysql字符串连接concat 目录 赞 收藏 评论 分享 51CTO博客 首页 关注 排行榜 精品课程 免费资料软考题库 写文章 ...
>Like Oliver said, it's case-insensitive when double quotes >aren't used at any point in the process. > >If you didn't use double quotes on the create and it got an upper >case name, that's definately a bug. > >On Tue, 5 Sep 2000, Zeljko Trogrlic wrote: ...
ltree Data type for hierarchical tree-like structures moddatetime Functions for tracking last modification time pg_cron Job scheduler for PostgreSQL pg_freespacemap Examine the free space map (FSM) pg_graphql Pg_graphql: GraphQL support pg_hashids Pg_hashids ...
I'd like to try this myself and run EXPLAIN on the case-insensitive query to see if the index kicks in. There's a chance the documentation is wrong or needs to be clarified. 1 0 replies edited supalarry Jul 13, 2022 @matthewmueller I think Postgres documentation explains this: For...
2 3 包含 NULL 的表达式总是得出一个 NULL 值结果，除非表达式中的操作和函数在文档中有另外的...