Vitalii Litvinchuk
82 lines
1.6 KiB
SQL
82 lines
1.6 KiB
SQL
use OrdersDB;
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# 1
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select *
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from Orders into outfile '/var/lib/mysql-files/Orders123.csv' fields terminated by ','
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enclosed by '"' lines terminated by '\n';
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CREATE TABLE NewOrder (
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ONUM int NOT NULL,
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AMT DECIMAL(8, 2) NOT NULL,
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ODATE DATE,
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SNUM int,
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CNUM int,
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PRIMARY KEY (ONUM),
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FOREIGN KEY (SNUM) REFERENCES Salespeople (SNUM),
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FOREIGN KEY (CNUM) REFERENCES Customers (CNUM)
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);
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LOAD DATA INFILE '/var/lib/mysql-files/Orders.csv' INTO
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TABLE NewOrder FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n' (
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ONUM,
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AMT,
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ODATE,
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SNUM,
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CNUM,
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@dummy
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);
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CREATE TABLE NewSalespeople AS SELECT * FROM Salespeople;
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CREATE TABLE NewCustomers LIKE Customers;
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INSERT INTO NewCustomers SELECT * FROM Customers;
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# 2
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use Team;
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ALTER TABLE member ADD birthday DATE DEFAULT NULL;
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ALTER TABLE member ADD salary DECIMAL(7, 2) NOT NULL DEFAULT 7999.99;
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load data infile '/var/lib/mysql-files/new_members.csv' into
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table member fields terminated by ',' enclosed by '"' lines terminated by '\n' ignore 1 lines (
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m_id,
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mname,
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birthday,
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mcity,
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mmail,
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salary
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);
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# 3
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select * from member into outfile '/var/lib/mysql-files/AllMembers.csv'
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fields terminated by ',' enclosed by '"' lines terminated by '\n';
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# 4
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CREATE TABLE backup_member AS SELECT * FROM member;
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show create table backup_member;
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DESCRIBE backup_member;
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SELECT * FROM backup_member;
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# 5
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create database Orders_backup;
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CREATE TABLE IF NOT EXISTS Orders_backup.member LIKE member;
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INSERT INTO
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Orders_backup.member
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SELECT *
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FROM member
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WHERE
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birthday IS NULL;
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DESCRIBE Orders_backup.member;
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SELECT * FROM Orders_backup.member; |