regtype pg_type 数据类型名 integer regconfig pg_ts_config 文本搜索配置 english regdictionary pg_ts_dict 文本搜索字典 simple 伪类型 PostgreSQL类型系统包含一系列特殊用途的条目, 它们按照类别来说叫做伪类型。伪类型不能作为字段的数据类型, 但是它可以用于声明一个函数的参数或者结果类型。 伪类型在一个函数...
PostgreSQL has a rich set of native data types available to users. Users can add new types to PostgreSQL using the CREATE TYPE command. PostgreSQL有一组丰富的本地数据类型可供用户使用。用户可以使用CREATE TYPE命令向PostgreSQL添加新类型。Each data type has an external representation determined by its...
col.data_type from information_schema.columns col join information_schema.tables tab on tab.table_schema = col.table_schema and tab.table_name = col.table_name and tab.table_type = 'BASE TABLE' where col.table_schema not in ('information_schema', 'pg_catalog') and col.data_type = '...
regclass pg_class relation name pg_type regtype pg_type data type name integer regconfig pg_ts_config text search configuration english regdictionary pg_ts_dict text search dictionary simple 伪类型 PostgreSQL类型系统包含了一些特殊用途的统称为伪类型的项。一个伪类型不能被用作列的数据类型,但它可以...
This document discusses PostgreSQL Data Types. While creating table, for each column, you specify a data type, i.e. what kind of data you want to store.
const fs = require('fs') const path = require('path') dataDictionary(` CREATE TABLE "public"...
("SELECT * FROM information_schema.columns");JSONObjectdictionary=newJSONObject();while(rs.next()){StringtableName=rs.getString("table_name");StringcolumnName=rs.getString("column_name");StringdataType=rs.getString("data_type");JSONObjecttableInfo=dictionary.getJSONObject(tableName);if(table...
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const fs = require('fs') const path = require('path') dataDictionary(` CREATE TABLE "public"...
类型oid表示一个对象标识符。 也有多个oid的别名类型:regproc,regprocedure,regoper,regoperator,regclass,regtype,regrole,regnamespace,regconfig, 和regdictionary。 OID的别名类型除了特定的输入和输出例程之外没有别的操作。这些例程可以接受并显示系统对象的符号名,而不是类型oid使用的原始数字值。别名类型使查找对...