Redshift選項Information_Schema

Question

剛剛從SSMS移動到Redshift（使用DBeaver），並且想知道是否有獲取表格描述的好選擇。在SQL服務器中，您可以編寫一個針對information_schema的優秀查詢來提取列名，數據類型等。Redshift中的任何類似選項？

Answer 1

INFORMATION_SCHEMA表在Redshift中可用。

這可能是您選擇的查詢工具（DBeaver）在GUI中隱藏架構。但是，您仍然應該能夠正常查詢它們。

當我使用Navicat時，這當然是這種情況。如果您想查看架構，那麼在使用SQL Workbench或SQuirreL時它是可見的。

2016-04-04：AWS已創建了多更簡單的視圖，它提供完整的CREATE TABLE語句，包括所有Redshift特定的內容。從這裏獲得他們：https://github.com/awslabs/amazon-redshift-utils/tree/master/src/AdminViews

Answer 2

看起來你正在尋找的東西是這樣的：http://rocky-says.blogspot.com/2015/01/amazon-redshift-generate-table-ddl.html

下面是該查詢，這將有助於你：只需更換< TABLE>和< SCHEMA>您的表名和模式

SELECT DISTINCT n.nspname AS schemaname 
,c.relname AS tablename 
,a.attname AS COLUMN 
,a.attnum AS column_position 
,pg_catalog.format_type(a.atttypid, a.atttypmod) AS TYPE 
,pg_catalog.format_encoding(a.attencodingtype) AS encoding 
    ,a.attisdistkey AS distkey 
,a.attsortkeyord AS sortkey 
,a.attnotnull AS notnull 
,a.attencodingtype AS compression 
,con.conkey AS primary_key_column_ids 
,con.contype AS con_type 
FROM pg_catalog.pg_namespace n 
,pg_catalog.pg_class c 
,pg_catalog.pg_attribute a 
,pg_constraint con 
,pg_catalog.pg_stats stats 
WHERE n.oid = c.relnamespace 
AND c.oid = a.attrelid 
AND a.attnum > 0 
AND c.relname NOT LIKE '%pkey' 
AND lower(c.relname) = '' 
AND n.nspname = '' 
AND c.oid = con.conrelid(+) 
ORDER BY A.ATTNUM 
;