sql - 加入 3 个表进行搜索

Question

我有 3 个表：Session、Film 和 Vendor

Session.FilmID
Film.VendorID
Vendor.VendorName

我想在搜索中包含 VendarName。

这是我所拥有的：

sql ="SELECT SessionID, Identifier, SessionType.SessionTypeName, Film.*, Vendor.*, 
CameraID, Date FROM Session "
sql = sql + "JOIN SessionType USING (SessionTypeID) "
sql = sql + "JOIN Film USING(FilmID) "
sql = sql + "JOIN Vendor ON Film.VendorID = Vendor.VendorID "
sql = sql + "WHERE Session.Identifier LIKE ('%" + search + "%') OR "
sql = sql + "Session.Notes LIKE('%" + search + "%') OR "
sql = sql + "SessionType.SessionTypeName LIKE ('%" + search + "%') "
sql = sql + "Film.Vendor.VendorName LIKE ('%" + search + "%') "
sql = sql + "ORDER BY Identifier,SessionType.SessionTypeName"

我究竟做错了什么？

Answer 1

您的 sql 语句中缺少“或”。更改此行：

sql = sql + "SessionType.SessionTypeName LIKE ('%" + search + "%') "

至：

sql = sql + "SessionType.SessionTypeName LIKE ('%" + search + "%') OR "