数据类型不兼容（hypersql）

Question

为什么我会收到不兼容的数据类型错误？

int blockSize = 100;
String city="London";
" select * from"+
"(" +
" select l.* from lottotable as l where l.city='"+city+"' and  l.date< cast('"+date+"' as date) order by l.date desc " +
")" +
" order by date asc limit CONVERT("+blockSize+", SQL_INTEGER )"

错误是：

  

java.sql.SQLSyntaxErrorException：操作中不兼容的数据类型：;在LIMIT，OFFSET或FETCH中的语句中[select * from（从Lottotable中选择l。*作为l，其中l.city ='London'和l.date

Derby正常关闭

更新： 表的结构很简单 LOTTOTABLE（DATE，CITY，P1，P2，P3，P4，P5）; p1到p5是整数，date是date类型，city是varchar

Answer 1

按照注释中的建议更改查询：

int blockSize = 100;
String city="London";
String queryText =
    " select * from"+
    "(" +
    " select l.* from lottotable as l where l.city='"+city+"' and  l.date< cast('"+date+"' as date) order by l.date desc " +
    ")" +
    " order by date asc limit "+blockSize;