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财政年度表之建表约束

程序员文章站 2022-05-26 20:58:26
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财政年度表约束 无 Create Table FinancialYear(fiscal_year INTEGER NOT NULL PRIMARY KEY,start_date DATE NOT NULL,CHECK ((EXTRACT(YEAR FROM start_date)=fiscal_year-1)AND (EXTRACT (MONTH FROM start_date)=10)AND (EXTRACT(DAY FROM start_date)=1),

财政年度表约束
Create Table FinancialYear
(fiscal_year INTEGER NOT NULL PRIMARY KEY,
start_date DATE NOT NULL,
CHECK ((EXTRACT(YEAR FROM start_date)=fiscal_year-1)
AND (EXTRACT (MONTH FROM start_date)=10)
AND (EXTRACT(DAY FROM start_date)=1),
end_date DATE NOT NULL,
CONSTRAINT valid_end_date
CHECK ((EXTRACT (YEAR FROM end_date)=fiscal_year)
AND (EXTRACT (MONTH FROM end_date)=9)
AND (EXTRACT (DAY FROM end_date)=30)))