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How can I drop all the tables in a PostgreSQL database?
...ur tables are in a single schema, this approach could work (below code assumes that the name of your schema is public)
DROP SCHEMA public CASCADE;
CREATE SCHEMA public;
If you are using PostgreSQL 9.3 or greater, you may also need to restore the default grants.
GRANT ALL ON SCHEMA public TO post...
Compare dates in MySQL
...abase that is between 2 given dates.
The column from the database is DATETIME, and I want to compare it only to the date format, not the datetime format.
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Programmatically change log level in Log4j2
...nging the log level in Log4j2. I tried looking at their configuration documentation but that didn't seem to have anything. I also tried looking in the package: org.apache.logging.log4j.core.config , but nothing in there looked helpful either.
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How to copy files from 'assets' folder to sdcard?
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If anyone else is having the same problem, this is how I did it
private void copyAssets() {
AssetManager assetManager = getAssets();
String[] files = null;
try {
files = assetManager.list("");
} catch (IOException e) {
Log....
jQuery posting JSON
... should be a stringified JavaScript object:
data: JSON.stringify({ "userName": userName, "password" : password })
To send your formData, pass it to stringify:
data: JSON.stringify(formData)
Some servers also require the application/json content type:
contentType: 'application/json'
There's ...
Difference between map, applymap and apply methods in Pandas
Can you tell me when to use these vectorization methods with basic examples?
10 Answers
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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
...jango 1.9 added the Field.disabled attribute:
The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if a user tampers with the field’s value submitted to the server, it will be ignored in favor of ...
Reorder levels of a factor without changing order of values
I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be.
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Python argparse: Make at least one argument required
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In Vim, how do I delete everything within the double quotes?
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For me it's di"<spacebar>. For some keyboards it is necessary to hit spacebar to send the double quote character.
– André Staltz
Mar 31 '13 at 10:34
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