1、在当前数据库和目标端数据库(需要跨库查询的数据库)分别创建dblink, create extension if not exists dblink; 注意:如果仅在当前数据库或者目标端数据库创建dblink扩展,则,在查询的时候会报错(错误: 函数 dblink(unknown, unknown) 不存在),如下图是cosmic_all库里面没有创建dblink,mc库创建了: 2、创建dblink...
('B', 5); -- 使用crosstab函数进行转换 CREATE EXTENSION IF NOT EXISTS tablefunc; -- 首先需要加载crosstab扩展模块 SELECT * FROM crosstab( 'SELECT id, category, value FROM my_table ORDER BY 1', 'SELECT DISTINCT category FROM my_table ORDER BY 1' ) AS ct (id INTEGER, A INTEGER, B...
ERROR: could not stat file "/usr/local/Cellar/postgresql/9.4.0/share/postgresql/extension/base36--0.0.2.sql": No such file or directory command failed: "/usr/local/Cellar/postgresql/9.4.0/bin/psql" -X -c "CREATE EXTENSION IF NOT EXISTS \"base36\"" "contrib_regression" make: *** [...
CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; CREATE TABLE IF NOT EXISTS key_val ( id uuid DEFAULT uuid_generate_v4(), value jsonb, EXCLUDE using hash (id with =) ); CREATE INDEX IF NOT EXISTS idx_key_val ON key_val USING hash (id); Get, Update and Insert are quite simple, but...
CREATE EXTENSION IF NOT EXISTS "pgcrypto"; -- gives: SELECT gen_random_uuid(); On postgres version 13+: SELECT gen_random_uuid(); In context when you don't know the postgres version but presume it's at least 9, and it matters to you not to enable the extension unnecessarily: DO...
Function gen_random_uuid() is part of extension pgcrypto, so when you are trying to enable it, it notifies you, that this function is already installed. CREATE EXTENSION IF NOT EXISTS pgcrypto WITH SCHEMA pg_catalog CASCADE; On most cases is recommended to install common Postgres extensions ...
当我打字时 create extension postgis; 获取误差 错误:无法打开扩展控制文件"/usr/pgsql-9.6/share/extension/postgis.control":没有这样的文件或目录 因为postgis.contol位于另一个地方, find /usr -name postgis.control /usr/share/pgsql/extension/postgis.control 但是postgres试图从/usr/pgsql-9.6/share/...
await sql`CREATE EXTENSION IF NOT EXISTS "uuid-ossp"`; // Create the "invoices" table if it doesn't exist const createTable = await sql` CREATE TABLE IF NOT EXISTS users ( id UUID DEFAULT uuid_generate_v4() PRIMARY KEY, name VARCHAR(255) NOT NULL, ...
1、pg_stat_statements 视图,需要安装插件pg_stat_statements,并配置参数shared_preload_libraries后重启PG. create extension if not exists pg_stat_statements; alter system set shared_preload_libraries='pg_stat_statements'; ©著作权归作者所有:来自51CTO博客作者Somedaylost的原创作品,请联系作者获取转载授权,...
-- Enable the pg_trgm extensionCREATEEXTENSIONIFNOTEXISTSpg_trgm;-- Select all rows extensionsSELECT*FROMpg_extension; 从结果看到,除了 plpgsql 外,fuzzystrmatch 和 pg_trgm 均已启用 现在,您可以使用 fuzzystrmatch 和 pg_trgm 扩展进行一些高级的全文本搜索查询。