在具有相同名稱的列上加入 3 個表

CREATE TABLE Table1 (
    id INT UNSIGNED NOT NULL,
    created_on DATE NOT NULL,
    PRIMARY KEY (id)
)
CREATE TABLE Table2 (
    id INT UNSIGNED NOT NULL,
    personName VARCHAR(255) NOT NULL,
    PRIMARY KEY (id)
)
CREATE TABLE Table3 (
    id INT UNSIGNED NOT NULL,
    accountName VARCHAR(255) NOT NULL,
    PRIMARY KEY (id)
)

在建立表之後，你可以執行 select 查詢以獲取所有三個相同表的 id

SELECT 
    t1.id AS table1Id, 
    t2.id AS table2Id, 
    t3.id AS table3Id 
FROM Table1 t1
LEFT JOIN Table2 t2 ON t2.id = t1.id
LEFT JOIN Table3 t3 ON t3.id = t1.id