Plpgsql：如何在plpgsql中執行以下任務？

Question

--SQL Server中的語法

SET @InnerQuery = @InnerQuery  + N'SELECT * from [' + @TableName + '] UNION ALL';

-在這里我嘗試在plpgsql中進行上述查詢。

innerquery:= innerquery UNION ALL select * from '%',TableName; --Not in working state

Answer 1

嘗試這個：

execute innerQuery || ' union all select * from "'
    || tableName || '"';