我正在创建一个像
create table tablename
as
select * for table2
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我收到了错误
ORA-01652 Unable to extend temp segment by in tablespace
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当我用Google搜索时,我经常发现ORA-01652错误显示有些值
Unable to extend temp segment by 32 in tablespace
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我没有得到任何这样的价值.我跑了这个查询
select
fs.tablespace_name "Tablespace",
(df.totalspace - fs.freespace) "Used MB",
fs.freespace "Free MB",
df.totalspace "Total MB",
round(100 * (fs.freespace / df.totalspace)) "Pct. Free"
from
(select
tablespace_name,
round(sum(bytes) / 1048576) TotalSpace
from
dba_data_files
group by
tablespace_name
) df,
(select
tablespace_name,
round(sum(bytes) / 1048576) FreeSpace
from
dba_free_space
group by
tablespace_name
) fs
where
df.tablespace_name …Run Code Online (Sandbox Code Playgroud) 嗨,我正在努力学习NLTK.我也是Python的新手.我正在尝试以下方面.
>>import nltk
>>nltk.pos_tag(nltk.word_tokenize("John lived in China"))
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我收到以下错误消息
回溯(最近一次调用最后一次):文件"",第1行,在nltk.pos_tag中(nltk.word_tokenize("John住在加利福尼亚州"))文件"C:\ Python34\lib\site-packages \nltk\tag__init __.py ",第100行,在pos_tag tagger = load(_POS_TAGGER)文件"C:\ Python34\lib\site-packages \nltk\data.py",第779行,在load resource_val = pickle.load(opened_resource)UnicodeDecodeError:'ascii '编解码器无法解码位置0的字节0xcb:序数不在范围内(128)
我已经下载了所有可用的型号(包括maxent_treebank_pos_tagger)
默认系统编码为UTF-8
>>sys.getdefaultencoding()
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我打开了data.py文件,这是可用的内容.
774# Load the resource.
775 opened_resource = _open(resource_url)
776if format == 'raw':
777 resource_val = opened_resource.read()
778 elif format == 'pickle':
779 resource_val = pickle.load(opened_resource)
780 elif format == 'json':
781 import json
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我在这做错了什么?
我有句子约翰在商店看到一个华丽的帽子
如何将其表示为依赖树,如下所示?
(S
(NP (NNP John))
(VP
(VBD saw)
(NP (DT a) (JJ flashy) (NN hat))
(PP (IN at) (NP (DT the) (NN store)))))
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我从这里得到了这个脚本
import spacy
from nltk import Tree
en_nlp = spacy.load('en')
doc = en_nlp("John saw a flashy hat at the store")
def to_nltk_tree(node):
if node.n_lefts + node.n_rights > 0:
return Tree(node.orth_, [to_nltk_tree(child) for child in node.children])
else:
return node.orth_
[to_nltk_tree(sent.root).pretty_print() for sent in doc.sents]
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我得到以下,但我正在寻找树(NLTK)格式.
saw
____|_______________
| | at
| | |
| …Run Code Online (Sandbox Code Playgroud) 谁能告诉我线程开始执行的顺序?我写了以下代码
class NewThread implements Runnable {
Thread t;
NewThread() {
//creating a second thread.
t=new Thread(this,"Demo Thread");
System.out.println("Child Thread:"+t);
t.start();
}
public void run() {
try {
for(int i=0;i<5;i++) {
System.out.println("Child Thread:"+i);
Thread.sleep(3000);
}
} catch(Exception e) {
System.out.println(e.getLocalizedMessage());
}
System.out.println("Exiting Child Thread");
}
}
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还有这个
public class ThreadDemo {
public static void main(String args[]) {
new NewThread();
try {
for(int i=0;i<5;i++) {
System.out.println("Main Thread:"+i);
Thread.sleep(3000);
}
} catch(Exception e) {
System.out.println(e.getLocalizedMessage());
}
System.out.println("Exiting Main Thread");
}
}
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当我执行此代码时,我得到许多不同的输出集.
Child …Run Code Online (Sandbox Code Playgroud) 我想从3个不同的表中获取特定值.每个表具有相同的结构,但包含一年中不同时期的数据.
Temp_Table_Jun (Contains data for June month)
---------------
CustNo CustName Revenue
1000 John 5.55
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我还有两张桌子
现在我运行一个查询
select sum(Revenue)Rev_June from Temp_Table_Jun where CustNo='1000'
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得到六月的结果.现在我的问题是我想在一个查询中获得所有月份的收入详细信息.
我需要类似的东西(这是错误的,不起作用)
select Rev_June,Rev_Apr,Rev_May,((Rev_June+Rev_Apr+Rev_May)/3)Avg_3_Mon from
(
select sum(Revenue)Rev_June from Temp_Table_Jun where CustNo='1000',
select sum(Revenue)Rev_Apr from Temp_Table_Apr where CustNo='1000',
select sum(Revenue)Rev_May from Temp_Table_May where CustNo='1000'
)
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怎么能实现这一目标?我正在使用Oracle 10g.
我有个问题。是否可以在运行时为类或结构创建多个对象?
#include<iostream>
#include<conio.h>
using namespace std;
struct node
{
int no;
};
int main()
{
int i;
for(i=0;i<4;i++)
{
struct node s[i];
}
cout<<"Enter the values";
for(i=0;i<4;i++)
{
cin>>s[i].no;
}
cout<<"The values are:";
for(i=0;i<4;i++)
{
cout<<s[i].no<<endl;
}
getch();
return 0;
}
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我尝试了上面的方法,但没有成功。任何帮助,将不胜感激