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102 lines
1.9 KiB
Markdown
102 lines
1.9 KiB
Markdown
5 years ago
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# Homework 1
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## Create database & table
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```sql
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// users table
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CREATE TABLE users (
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user_id int ,
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name varchar(50) ,
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mail varchar(50) ,
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mobile varchar(50) ,
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nric varchar(50)
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)
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// accounts table
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CREATE TABLE accounts (
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user_id int,
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acct_type varchar(50),
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acct_number bigint,
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balance decimal(10,2),
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date_created date,
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max_limit decimal(10,2)
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)
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// transactions table
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CREATE TABLE transactions (
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acct_number bigint,
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id bigint,
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date datetime,
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type varchar(50),
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amount decimal(10,2)
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)
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// messages table
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CREATE TABLE messages (
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user_id int,
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id int,
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date datetime,
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remark text
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```
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## Generate Random data
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* [mockaroo](https://www.mockaroo.com)
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+ [users csv](./mock_data/users.csv)
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+ [accounts csv](./mock_data/accounts.csv)
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+ [transactions sql](./mock_data/transactions.sql)
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+ [messages sql](./mock_data/mesages.sql)
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## Import data to table
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* import sql format data
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```sql
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mysql> source E:/downloads/users.sql;
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```
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* import csv format data. This is a bit more tricky
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```sql
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// query for folder location to upload .csv file
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mysql> SHOW VARIABLES LIKE "secure_file_priv";
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// users
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mysql> LOAD DATA INFILE "C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/users.csv"
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INTO TABLE nusbank.users
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COLUMNS TERMINATED BY ','
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OPTIONALLY ENCLOSED BY '"'
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ESCAPED BY '"'
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LINES TERMINATED BY '\n'
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IGNORE 1 ROWS;
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// accounts
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mysql> LOAD DATA INFILE "C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/accounts.csv"
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INTO TABLE nusbank.accounts
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COLUMNS TERMINATED BY ','
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OPTIONALLY ENCLOSED BY '"'
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ESCAPED BY '"'
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LINES TERMINATED BY '\n'
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IGNORE 1 ROWS;
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// transactions
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mysql> source E:/downloads/transactions.sql;
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// messages
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mysql> source E:/downloads/messages.sql;
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```
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## Dump the database
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* Goto Command Prompt. Type this command to dump to file (d:/nusbank.sql)
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```sh
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C:> "C:\Program Files\MySQL\MySQL Server 8.0\bin\mysqldump.exe" -u root -p nusbank > d:/nusbank.sql
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```
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## Data Queries
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