[英]Mysql query error 1064
我嘗試使用有關通過此查詢查找用戶的查詢:
Select id, username, lat, long,
acos(sin(0.761312289853)*sin(radians(lat)) + cos(0.761312289853)*cos(radians(lat))*cos(radians(long)-0.0676354285243)) * 6371 As D
From (
Select id, username, lat, long,
From rcp_users
Where lat Between 43.4491099949 And 43.7908522051
And long Between 3.63919239657 And 4.11125680343
) As FirstCut
Where acos(sin(0.761312289853)*sin(radians(lat)) + cos(0.761312289853)*cos(radians(lat))*cos(radians(long)-0.0676354285243)) * 6371 < 30
Order by D
但是我有這個錯誤:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'long,
acos(sin(0.761312289853)*sin(radians(lat)) + cos(0.761312289853)*' at line 1
我不明白錯誤。
long
是保留關鍵字 。 如果要命名列標識符,則必須將其包裝在刻度中:
Select id, username, lat, `long`,
acos(sin(0.761312289853)*sin(radians(lat)) + cos(0.761312289853)*cos(radians(lat))*cos(radians(`long`)-0.0676354285243)) * 6371 As D
From (
Select id, username, lat, `long`,
From rcp_users
Where lat Between 43.4491099949 And 43.7908522051
And `long` Between 3.63919239657 And 4.11125680343
) As FirstCut
Where acos(sin(0.761312289853)*sin(radians(lat)) + cos(0.761312289853)*cos(radians(lat))*cos(radians(`long`)-0.0676354285243)) * 6371 < 19
Order by D
long
是一個保留關鍵字 ,不允許使用iut,因為它在mysql中具有另一種含義。
您可以通過使用反引號來使用它(例如php中的單引號會使內容亂七八糟):
SELECT id, username, lat, `long` FROM table
為了使它更加明顯,假設您在數據庫中有一列名為select
的列:
SELECT id,username,select FROM table // this will not work, select is reserved
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