小编Lor*_*bat的帖子

你如何从netezza SQL中的日期中提取月份？

日期显示为05DEC2010.

我试过提取(MONTH FROM CONTACT_DATE)虽然它不起作用.任何想法？我不想只是提取一个

我有一个Prediction模型列表.我想将它们绑定到表单并允许使用回发.我如何构建我的表单,以便帖子将Home/Away得分与我绑定到表单的每个项目的Prediction模型id字段相关联？

视图

@app.route('/predictor/',methods=['GET','POST'])
@login_required
def predictions():    
    user_id = g.user.id
    prediction= # retrieve prediction
    if request.method == 'POST':
        if form.validate() == False:
            flash('A score is missing, please fill in all predictions')
            render_template('predictor.html', prediction=prediction, form=form)
        else:
            for pred in prediction:
                # store my prediction
            flash('Prediction added')
            return redirect(url_for("predictions"))    
    # display current predictions
    elif request.method == 'GET':
        return render_template('predictor.html', prediction=prediction, form=form)

形成

class PredictionForm(WTForm):
    id = fields.IntegerField(validators=[validators.required()], widget=HiddenInput())
    home_score = fields.TextField(validators=[validators.required()])
    away_score = fields.TextField(validators=[validators.required()])

模板

  <form action="" …

如何读取多个特定数据集并附加到一个大数据集？

例如我在库中我有100个数据集,但我只想附加有_du1,_du2的数据集

格式和列名称相同

我刺它不起作用:

PROC SQL NOPRINT;
SELECT memname INTO :tab1-:tab103 FROM sashelp.vtable
where memname like '_DU%';
SELECT count(*) INTO :obs FROM sashelp.vtable
where memname like '_DU%';
QUIT;

%macro rubber;
%do i=1 %to i=&obs;
proc append base=tot_comb data=&&tab&i force;
run;
%end;
%mend;

%rubber;

我看不到我要去哪里错了。我安装了最新的WTF表单，但是仍然出现此错误。

方法：

from flask.ext.wtf import Form
from wtforms import PasswordField, validators, fields
from wtforms.fields import TextField, BooleanField
from wtforms.validators import Required, Email, EqualTo

结果：

Traceback (most recent call last):

  File "/bin/user_wsgi_wrapper.py", line 67, in __call__
self.error_log_file.logger.exception("Error running WSGI application")
  File "/usr/lib/python3.3/logging/__init__.py", line 1269, in exception
self.error(msg, *args, **kwargs)
  File "/usr/lib/python3.3/logging/__init__.py", line 1262, in error
self._log(ERROR, msg, args, **kwargs)
  File "/usr/lib/python3.3/logging/__init__.py", line 1368, in _log
self.handle(record)
  File "/usr/lib/python3.3/logging/__init__.py", line 1377, in handle
if (not self.disabled) and self.filter(record):
 File "/usr/lib/python3.3/logflask_wtf
wtformsging/__init__.py", line …

你如何更新多个值？

predictions=Fixture_prediction.query\
   .filter_by(user_id=user_id)\
   .update(request.form['home_score'],request.form['away_score'])

这是我得到的错误:

ArgumentError: Valid strategies for session synchronization are False, 'evaluate' and 'fetch'

我没有意识到这会删除所有内容:

git clean -d -f -x

如何在上述命令后恢复丢失的文件？

编辑:

我的设置是使用ubutu作为虚拟机的virtualbox.我已经从我的主目录中删除了repo之外的所有内容:(((