java.sql.SQLException: ORA-01006: 赋值变量不存在 ？？？？

[robotcrawl]

String SQL_GROUP_ID =
"SELECT id,count(id) FROM w_guide_guide WHERE id IN ( " +
"SELECT guideid FROM w_guide_leagueguide WHERE leagueid IN ( " +
"SELECT id FROM w_guide_league WHERE line LIKE '?' )) GROUP BY id";

//执行查询:
try {

//先查出导游ID及出现次数:
System.out.println("line" + line);
PreparedStatement prep = conn.prepareStatement(SQL_TEST);
prep.setString(1,line);
//System.out.println("" + prep.getParameterMetaData().getParameterCount());
ResultSet rs = prep.executeQuery();

[haimingway]

PreparedStatement prep = conn.prepareStatement(SQL_GROUP_ID);

[yu_shi_bin]

‘？’---〉？

[haimingway]

'?'-->'%?%'

[xiaoxiaosong]

同意 ： haimingway(hemingway) 的说法！！