Question

我应该使用内部连接和另一个表在sql中创建一个表。我带来了这样的解决方案，但MySQL Workbench一直告诉我SQL语法中存在错误。我没有任何想法。如果有人能帮助我，我将不胜感激。

 CREATE TABLE BigTable AS( 
 SELECT
    ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued
 FROM `northwind`.`products`
 INNER JOIN(
     SELECT 
        CustomerID, EmployeeID, OrderDate, RequiredDate, ShipVia, Freight, ShipName, ShipAddress, ShipCity, ShipRegion, ShipPostalCode, ShipCountry, ProductID, UnitPrice, Quantity, Discount 
     FROM `northwind`.`orders` 
     INNER JOIN `northwind`.`order_details`
     ON orders.OrderID=order_details.OrderID) AS products
 INNER JOIN(
     SELECT
        LastName, FirstName ,Title ,TitleOfCourtesy ,BirthDate ,HireDate ,Address ,City , Region, PostalCode, Country, HomePhone, Extension, Photo, Notes, ReportsTo, CompanyName,ContactName,ContactTitle,Address,City,Region,PostalCode,Country,Phone,Fax,
     FROM `northwind`.`employees`
     INNER JOIN `northwind`.`customers`) AS People));

Answer 1

摆脱外围的括号。它应该是：

CREATE TABLE BigTable AS
SELECT
    ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued
FROM `northwind`.`products`
INNER JOIN(
    SELECT 
        CustomerID, EmployeeID, OrderDate, RequiredDate, ShipVia, Freight, ShipName, ShipAddress, ShipCity, ShipRegion, ShipPostalCode, ShipCountry, ProductID, UnitPrice, Quantity, Discount 
    FROM `northwind`.`orders` 
    INNER JOIN `northwind`.`order_details`
    ON orders.OrderID=order_details.OrderID) AS products
INNER JOIN(
    SELECT
        LastName, FirstName ,Title ,TitleOfCourtesy ,BirthDate ,HireDate ,Address ,City , Region, PostalCode, Country, HomePhone, Extension, Photo, Notes, ReportsTo, CompanyName,ContactName,ContactTitle,Address,City,Region,PostalCode,Country,Phone,Fax
    FROM `northwind`.`employees`
    INNER JOIN `northwind`.`customers`) AS People;

您的括号也不匹配，因为最后两个))与开头(匹配，,之后额外Fax。

这些将修复语法错误。但是看起来您也有逻辑错误，因为大多数INNER JOIN子句都缺少ON条件来关联表。而且您正在选择许多您从未使用的列。

使用sql中的内连接创建表

1 个答案: