Question

假设我有一个表和一个接受表rowtype的一个参数的过程：

CREATE TABLE t (a NUMBER, b NUMBER);

CREATE PROCEDURE p (x t%ROWTYPE) IS
BEGIN
  NULL;
END;

我是否可以使用rowtype文字调用该过程，即没有显式创建rowtype变量（或者至少没有明确列出并分配它的每个字段）？以下两种方法都会产生以下错误：

p(1, 2);

p((1, 2));

PLS-00306：调用'P'
时参数的数量或类型错误

Answer 1

您还可以从游标循环构建记录：

[.kibana][[.kibana][0]] DocumentAlreadyExistsException[[dashboard][New-Dashboard]: document already exists]
    at org.elasticsearch.index.engine.InternalEngine.innerCreateNoLock(InternalEngine.java:411)
    at org.elasticsearch.index.engine.InternalEngine.innerCreate(InternalEngine.java:369)
    at org.elasticsearch.index.engine.InternalEngine.create(InternalEngine.java:341)
    at org.elasticsearch.index.shard.IndexShard.create(IndexShard.java:517)
    at org.elasticsearch.index.engine.Engine$Create.execute(Engine.java:789)
    at org.elasticsearch.action.support.replication.TransportReplicationAction.executeIndexRequestOnPrimary(TransportReplicationAction.java:1073)
    at org.elasticsearch.action.index.TransportIndexAction.shardOperationOnPrimary(TransportIndexAction.java:170)
    at org.elasticsearch.action.support.replication.TransportReplicationAction$PrimaryPhase.performOnPrimary(TransportReplicationAction.java:579)
    at org.elasticsearch.action.support.replication.TransportReplicationAction$PrimaryPhase$1.doRun(TransportReplicationAction.java:452)
    at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

不幸的是，PL / SQL记录只是简单的结构，并不像对象类型那样带有构造函数。（我希望他们这样做。）

Answer 2

这不是最佳解决方案，因为它（a）需要创建变量而（b）不是很漂亮。但至少它有效：

UPDATE u
SET u.time_code = tcu.time_code
FROM users u INNER JOIN time_code_users tcu
    ON u.user_name = tcu.user_name

我仍然对更好的解决方案感兴趣。

如何在PL / SQL中调用rowtype literal作为参数的过程？

2 个答案: