Question

我有一个交易表，我的问题是跟踪transactionDateTime列。使用SQL，我似乎无法使DATE或TIMESTAMP格式化，以便任何插入的数据必须在任何给定日期的上午8点到晚上10点之间：

    CREATE TABLE Transaction_T
      (transactionID          NUMBER(8,0)              ,
       employeeID             NUMBER(10,0)      NOT NULL,
       customerID             NUMBER(6,0)       NOT NULL,
       transactionDate        VARCHAR2(9)       NOT NULL,
       transactionPayment     VARCHAR2(10) check(transactionPayment IN('cash','credit','debit','ebt')),
       transactionType        VARCHAR2(10) check(transactionType IN('void','return','sale')),
       transactionDateTime    TIMESTAMP check(transactionDateTime < '% 22:00:00' AND transactionDateTime > '% 08:00:00') NOT NULL,
CONSTRAINT TransactionPK PRIMARY KEY (transactionID),
CONSTRAINT TransactionFK1 FOREIGN KEY (employeeID) REFERENCES Employee_T(employeeID),
CONSTRAINT TranscationFK2 FOREIGN KEY (customerID) REFERENCES Customer_T(customerID));

上面的表已创建，但在尝试插入正确的Date(Time)时，我会收到有关1到12小时的格式错误，或者当时间低于12时的有效月份。我使用过Oracle文档格式，但仍然没有运气：

INSERT INTO 
transaction_T(transactionID, employeeID, customerID, transactionDate, transactionPayment, transactionType, transactionDateTime) 
VALUES(00000001, 0001, 000004, '04-APR-13','ebt','sale','04-APR-13 13:25:10');

Answer 1

检查约束中的%在这里不起作用。试试这个：

CHECK (
  EXTRACT(HOUR FROM transactionDateTime) < 22 AND
  EXTRACT(HOUR FROM transactionDateTime) >= 8)

Answer 2

您可以像这样表达您的支票限制：

check(transactionDateTime between trunc(transactionDateTime) + 8/24 and trunc(transactionDateTime) + 22/24))

SQL检查DATE两次之间的任何一天

2 个答案: