pg_attribute.attrelid = pg_class.oid and pg_attribute.attnum = any(pg_constraint.conkey) inner join pg_type on pg_type.oid = pg_attribute.atttypid where pg_class.relname = c.relname and pg_constraint.contype = 'p' and pg_attribute.attname = a.attname) > 0 then 1 else 0 end)...
concat_ws('',t.typname,SUBSTRING(format_type(a.atttypid,a.atttypmod) from '(.*)')) as "字段类型" FROM pg_class as c, pg_attribute as a, pg_type as t WHERE c.relname = 't_batch_task' and a.atttypid = t.oid and a.attrelid = c.oid and a.attnum>0; 索引管理 创建索引...
postgres=# select oprname,oprcode from pg_operator where oid=93; oprname | oprcode ---+--- = | nameeq (1 row) postgres=# select proname from pg_proc where oid=62; proname --- nameeq (1 row) postgres=# select typname from pg_type where oid=19; typname --- name (1 row) ...
1259) BKI_BOOTSTRAP7{8NameData relname;/*class name*/9Oid relnamespace;/*OID of namespace containing this class*/10Oid reltype;/*OID of associated entry in pg_type*/11Oid relowner
PostgreSQL是一种开源的关系型数据库管理系统,它支持许多数据类型,包括数值、字符串、日期/时间、布尔、数组、JSON等。获取PostgreSQL类型的属性可以通过查询系统目录表pg_type来...
pg_type_is_visible(type_oid) 该类/视图型是否在搜索路径中可见 regtype pg_function_is_visible(function_oid) 该函数是否在搜索路径中可见 regprocedure pg_operator_is_visible(operator_oid) 该操作符是否在搜索路径中可见 regoperator pg_opclass_is_visible(opclass_oid) 该操作符表是否在...
Type"help"forhelp. (postgres@192) [postgres] 10:21:30# \conninfo You are connected to database"postgres"as user"postgres"on host"192.168.8.151"at port"6666". 3. PGDATABASE 指定连接到的数据库名称。例如,我们可以设置PGDATABASE为"shawnyan",表示连接到名为"shawnyan"的数据库。
Type "help" for help. (postgres@192) [postgres] 10:19:34# \conninfo You are connected to database "postgres" as user "postgres" on host "192.168.8.151" at port "5432". 1. 2. 3. 4. 5. 6. 7. 2. PGPORT 指定PostgreSQL 服务器的端口号。默认端口为5432,但是如果我们将其更改为其他端...
var types = require('pg').types types.setTypeParser(20, function(val) { return parseInt(val, 10) })boom: now you get numbers instead of strings.Just as another example -- not saying this is a good idea -- let's say you want to return all dates from your database as moment ...
我在当前数据库中有一个表,其名为 articles,我们可以通过pg_class表查询到对应的表 relfilenode。 可以看到表对应的 relfilenode 是 24588,所以可以到 24582 这个数据库目录中,查看所有表数据相关的文件: 可以看到表数据文件被分为了 24588 24588.1 24588.2 ...