有没有办法用Kotlin的Exposed库运行原始sql

Question

我正在尝试运行一些特定于postgres的sql,并希望在Exposed中重用事务管理.

Answer 1

在Kiskae的回答的帮助下,我能够运行原始sql:

transaction {
     val conn = TransactionManager.current().connection
     val statement = conn.createStatement()
     val query = "REFRESH MATERIALIZED VIEW someview"
     statement.execute(query)
}

Answer 2

公开了Transaction.exec(String)可能做您想要的方法。参见https://github.com/JetBrains/Exposed/blob/master/src/test/kotlin/org/jetbrains/exposed/sql/tests/mysql/MysqlTests.kt

Answer 3

这是带有参数的示例：

transaction(database) {
   val conn = TransactionManager.current().connection
   val query = "update user set name = ? where id = ?";
   val statement = conn.prepareStatement(query, false)
   statement.fillParameters(listOf(Pair(VarCharColumnType(), "Laura"),
      Pair(IntegerColumnType(), 3)));
   statement.executeUpdate()
}