从 Java 运行 DELETE 时出现 SQL 语法错误

Question

我收到错误错误：语法错误在"（"

String deleteSQL = "DELETE FROM customer" +
"WHERE (fname = 'Fred' AND lname = 'Flintstone')" +
"OR (fname = 'Barney' AND lname = 'Rubble')";
System.out.println("Records deleted: "
+ stmt.executeUpdate(deleteSQL));

Answer 1

String deleteSQL = "DELETE FROM customer " +
"WHERE (fname = 'Fred' AND lname = 'Flintstone') " +
"OR (fname = 'Barney' AND lname = 'Rubble') ";
System.out.println("Records deleted: "
+ stmt.executeUpdate(deleteSQL));

问题是连接时缺少空格。

想象一下以下内容：

"字"+"字2"

这将导致"wordword2"

所以应该是

"word" + " " + "word2"或"word "+ "word2"