PostgreSQLprovides aRENAME COLUMNclause that is used with the collaboration ofALTER TABLEcommand to rename a column.PostgreSQLdoesn’t provide the“IF EXISTS”option for the“RENAME COLUMN”command. So, Postgres will throw an error if the targeted column doesn’t exist in the selected table. This...
Summary: in this tutorial, you will learn how to use the PostgreSQL RENAME COLUMN clause in the ALTER TABLE statement to rename one or more columns of a table. Introduction to PostgreSQL RENAME COLUMN clause To rename a column of a table, you use the ALTER TABLE statement with RENAME COLUMN...
ALTER TABLE table_name RENAME COLUMN column_name(修改表中的列名称) ALTERTABLEmovies.movies_aliyundrive-- RENAME COLUMN "仅供学习参考使用,下载后请于24小时内删除.不" TO "分类",-- RENAME COLUMN f2 TO "名称",RENAMECOLUMNf3TO"链接";
The name is translated back in the internal function. A view in PostgreSQL can be thought of as an empty table with a select rewrite rule. Using your example, the internal query tree for the rewrite rule is located in the pg_rewrite.ev_action table/column and there you'll see the refer...
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PostgreSqlV2Source PostgreSqlV2TableDataset PowerBIWorkspaceLinkedService PrestoAuthenticationType PrestoLinkedService PrestoObjectDataset PrestoSource PrivateEndpoint PrivateEndpointConnection PrivateLinkServiceConnectionState ProxyResource PurviewConfiguration QueryDataFlowDebugSessionsResponse QueryTableStatusRequest QuickbaseLi...
PostgreSqlV2Source PostgreSqlV2TableDataset PowerBIWorkspaceLinkedService PrestoAuthenticationType PrestoLinkedService PrestoObjectDataset PrestoSource PrivateEndpoint PrivateEndpointConnection PrivateLinkServiceConnectionState ProxyResource PurviewConfiguration QueryDataFlowDebugSessionsResponse QueryTableStatusRequest...
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Let's change the newly added column name from email_id column to email in the employee table. Example: Rename Column Copy ALTER TABLE employee RENAME email_id TO email;Now, the email_id column is renamed, as shown below.If you try to rename column which does not exists then PostgreSQL ...