how to implement like operator in prepared statement? [duplicate]

问题

This question already has an answer here:

Use of LIKE clause in sql prepared statement, spring, SimpleJDBCTemplate (1 answer)

Closed 3 years ago.

ps=con.prepareStatement("select * from REGISTER inner join ORGAN on REGISTER.PATIENTID=ORGAN.PATIENTID where ORGAN.ORGAN LIKE ?");          
ps.setString(1,"'%"+o.getOrgan()+"%'");

I executed the query in SQL Developer which works fine, but in DAO class it is not returning any result set.

回答1:

Use

ps.setString(1, "%" + o.getOrgan() + "%");

Note the absence of quotes.

来源：https://stackoverflow.com/questions/40192410/how-to-implement-like-operator-in-prepared-statement