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E11000 duplicate key error index in mongodb mongoose
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var userSchema = new mongoose.Schema({
local: {
name: { type: String },
email : { type: String, require: true, index:true, unique:true,sparse:true},
password: { type: String, require:true },
},
facebook: {
id : { type: String },
token : { type:...
How to print pandas DataFrame without index
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print df.to_string(index=False)
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Moving from CVS to Git: $Id$ equivalent?
...44934b1cd774e6d4 $
Some good information is in How do I enable the ident string for a Git repository?.
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T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
I have seen a couple of questions related to string concatenation in SQL.
I wonder how would you approach the opposite problem: splitting coma delimited string into rows of data:
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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...eness on a single collection if you use other types for the key, such as a string in your example.
– mstearn
Jan 13 '11 at 6:18
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Best way to load module/class from lib folder in Rails 3?
... you want to be autoloadable.
# config.autoload_paths += %W(#{config.root}/extras)
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How can I append a string to an existing field in MySQL?
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You need to use the CONCAT() function in MySQL for string concatenation:
UPDATE categories SET code = CONCAT(code, '_standard') WHERE id = 1;
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Calling JMX MBean method from a shell script
...Url
def serverUrl = 'service:jmx:rmi:///jndi/rmi://localhost:9003/jmxrmi'
String beanName = "com.webwars.gameplatform.data:type=udmdataloadsystem,id=0"
def server = JmxFactory.connect(new JmxUrl(serverUrl)).MBeanServerConnection
def dataSystem = new GroovyMBean(server, beanName)
println "Connected...
How to git reset --hard a subdirectory?
... don't remove files which were deleted in the target revision.
If you have extra files in the working tree which don't exist in HEAD, a git checkout HEAD -- <path> won't remove them.
Note: With git checkout --overlay HEAD -- <path> (Git 2.22, Q1 2019), files that appear in the index an...
How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
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