我嘗試acomplish有3種型號的關係: Cities.php //table cities
id
name
Neighbourhoods.php //table neighbourhoods
id
name
city_id
Blocks.php //table blocks
id
name
neighbourhood_id
我的模式是這樣的: Cities.php
美好的一天! 我是Laravel的新手。我嘗試了很多方法來做到這一點,但它仍然給我一個錯誤。我想這個SQL查詢轉換成雄辯 Select t.employee_code,
CASE WHEN t.day = '2017-08-19' THEN t.PRESENT ELSE NULL END AS `2017-08-19`,
CASE WHEN t.day = '2017