プリペアードステートメントで失敗しました。処理を中止します。

Standard Message: MDB2 Error: no such field

Standard Code: -19

DBMS/User Message: _doQuery: [Error message: Could not execute statement] [Last executed query: PREPARE MDB2_STATEMENT_mysql_11ee8ec09a51d8c68c5909e5656c8ad6 FROM 'select count(*) from m_item item inner join brands brands on item.category = brands.category and item.brand = brands.brand inner join m_category category on item.category = category.id inner join m_brand brand on item.brand = brand.id inner join m_model model on item.model = model.id where item.public = 1 and item.del = 0 and item.stock = 1 and item.price_down = \\der=price_group and item.category = 1 and item.brand = 10 '] [Native code: 1054] [Native message: Unknown column '∨der' in 'where clause']

DBMS/Debug Message: _doQuery: [Error message: Could not execute statement] [Last executed query: PREPARE MDB2_STATEMENT_mysql_11ee8ec09a51d8c68c5909e5656c8ad6 FROM 'select count(*) from m_item item inner join brands brands on item.category = brands.category and item.brand = brands.brand inner join m_category category on item.category = category.id inner join m_brand brand on item.brand = brand.id inner join m_model model on item.model = model.id where item.public = 1 and item.del = 0 and item.stock = 1 and item.price_down = \\der=price_group and item.category = 1 and item.brand = 10 '] [Native code: 1054] [Native message: Unknown column '∨der' in 'where clause']