Postgres获取带列的表架构

Posted 2021-02-25

Get table schema with columns via sql.

SELECT 
      ordinal_position, 
      column_name, 
      data_type, 
      is_nullable,
      description.description AS comment
  FROM 
      information_schema.columns COLUMNS
      LEFT JOIN pg_class class ON (COLUMNS.table_name = class.relname)
      LEFT JOIN pg_description description ON (class.oid = description.objoid)
      LEFT JOIN pg_attribute attrib ON  (class.oid = attrib.attrelid AND COLUMNS.column_name = attrib.attname AND attrib.attnum = description.objsubid)
  WHERE 
    TABLE_NAME='{$tableName}' 
  GROUP BY
    ordinal_position, column_name, data_type, is_nullable, description.description