为什么这个SQL代码显示“缺少右括号”的错误？

Question

CREATE TABLE PoolActivity_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
ActivityID  NUMBER(11,0) NOT NULL, 
CONSTRAINT PoolActivity_PK PRIMARY KEY (PoolID,ServiceDate,ActivityID) 
CONSTRAINT PoolActivity_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID), 
CONSTRAINT PoolActivity_FK FOREIGN KEY (ActivityID) 
REFERENCES Activity_T (ActivityID) 
); 

这是我的代码，我不知道为什么出现错误。

CREATE TABLE Customer_T 
(CustomerID   NUMBER(11,0)  NOT NULL, 
CustomerFname   VARCHAR2(25), 
CustomerMname   VARCHAR2(25), 
CustomerLname   VARCHAR2(25), 
CustomerAddress1   VARCHAR2(50), 
CustomerAddress2   VARCHAR2(50), 
CustomerCity   VARCHAR2(25), 
CustomerState   CHAR(2), 
CustomerZipCode   NUMBER(5,0), 
CustomerPhoneNumber  NUMBER(11,0), 
CONSTRAINT Customer_PK PRIMARY KEY (CustomerID) 
); 

CREATE TABLE Pool_T  
(PoolID   NUMBER(11,0)  NOT NULL, 
PoolAddress1 VARCHAR2(25), 
PoolAddress2  VARCHAR2(25), 
PoolCity  VARCHAR2(25), 
PoolState  VARCHAR2(25), 
PoolZipCode  NUMBER(5,0), 
TypeSurface  VARCHAR2(9), 
Gallon  INTEGER, 
Filters  VARCHAR2(25), 
VisitPerMonth INTEGER,  
Dates   DATE DEFAULT SYSDATE, 
Fee   NUMBER(11,0), 
CONSTRAINT Pool_PK PRIMARY KEY (PoolID) 
); 

CREATE TABLE PoolVisit_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
LengthStay  INTEGER, 
CONSTRAINT Poolvisit_PK PRIMARY KEY (PoolID,ServiceDate) 
CONSTRAINT PoolVisit_FK FOREIGN KEY (PoolID) 
REFERENCES Pool_T (PoolID) 
); 

CREATE TABLE PoolActivity_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
ActivityID  NUMBER(11,0) NOT NULL, 
CONSTRAINT PoolActivity_PK PRIMARY KEY (PoolID,ServiceDate,ActivityID) 
CONSTRAINT PoolActivity_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID), 
CONSTRAINT PoolActivity_FK FOREIGN KEY (ActivityID) 
REFERENCES Activity_T (ActivityID) 
); 

CREATE TABLE PoolChemical_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
ChemicalName VARCHAR2(25)  NOT NULL, 
Quantity  INTEGER, 
Cost   NUMBER(11,2), 
CONSTRAINT PoolChemical_PK PRIMARY KEY (PoolID,ServiceDate,ChemicalName) 
CONSTRAINT PoolChemical_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID) 
CONSTRAINT PoolChemical_FK FOREIGN KEY (ChemicalName) 
REFERENCES Chemical_T(ChemicalName) 
); 

CREATE TABLE Activity_T 
(ActivityID   NUMBER(11,0)  NOT NULL, 
ActivityDesc   VARCHAR2(500), 
CONSTRAINT Activity_PK PRIMARY KEY (ActivityID)); 

CREATE TABLE Chemical_T 
(ChemicalName  VARCHAR2(25)  NOT NULL, 
CONSTRAINT Chemical_PK PRIMARY KEY (ChemicalName)); 

Answer 1

的错误不只是在你突出的表，它也是在人之前，PoolVisit_T。在这两个，你只是缺少一个逗号主键约束后：

CREATE TABLE PoolVisit_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
LengthStay  INTEGER, 
CONSTRAINT Poolvisit_PK PRIMARY KEY (PoolID,ServiceDate), -- was missing comma 
CONSTRAINT PoolVisit_FK FOREIGN KEY (PoolID) 
REFERENCES Pool_T (PoolID) 
); 

CREATE TABLE PoolActivity_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
ActivityID  NUMBER(11,0) NOT NULL, 
CONSTRAINT PoolActivity_PK PRIMARY KEY (PoolID,ServiceDate,ActivityID), -- was missing 
CONSTRAINT PoolActivity_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID), 
CONSTRAINT PoolActivity_FK FOREIGN KEY (ActivityID) 
REFERENCES Activity_T (ActivityID) 
); 

而你在之后的一个缺二：

CREATE TABLE PoolChemical_T 
(PoolID   NUMBER(11,0)  NOT NULL, 
ServiceDate  DATE DEFAULT SYSDATE NOT NULL, 
ChemicalName VARCHAR2(25)  NOT NULL, 
Quantity  INTEGER, 
Cost   NUMBER(11,2), 
CONSTRAINT PoolChemical_PK PRIMARY KEY (PoolID,ServiceDate,ChemicalName), -- was missing 
CONSTRAINT PoolChemical_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID), -- was missing 
CONSTRAINT PoolChemical_FK FOREIGN KEY (ChemicalName) 
REFERENCES Chemical_T(ChemicalName) 
); 

如果你使用像SQL开发的IDE它将突出显示像这样的语法问题。

但你仍然有问题;您PoolActivity_T外键：

CONSTRAINT PoolActivity_FK FOREIGN KEY (PoolID) 
REFERENCES PoolVisit_T(PoolID), 

只指PoolID，但PoolVisit_T主键和主键有两列，因此需要为：

CONSTRAINT PoolActivity_FK FOREIGN KEY (PoolID,ServiceDate) 
REFERENCES PoolVisit_T(PoolID,ServiceDate), 

，你已经使用相同的FK名两个约束，所以下一位是：

CONSTRAINT PoolActivity_FK2 FOREIGN KEY (ActivityID) 
REFERENCES Activity_T (ActivityID) 

（但挑选更具描述性的名称FK，也许），和您必须在此之前创建Activity_T表格。

而且类似的问题与PoolChemical_T：

CONSTRAINT PoolChemical_PK PRIMARY KEY (PoolID,ServiceDate,ChemicalName), 
CONSTRAINT PoolChemical_FK FOREIGN KEY (PoolID,ServiceDate) 
REFERENCES PoolVisit_T(PoolID,ServiceDate), 
CONSTRAINT PoolChemical_FK2 FOREIGN KEY (ChemicalName) 
REFERENCES Chemical_T(ChemicalName) 

，创造Chemical_T第一。

SQL Fiddle创建所有表。