我有以下模式
{
f1: "test",
f2: "something",
type: "A",
date: "2018-11-01T00:00:00.000Z",
deleted: false
},
{
"f1": "check",
type: "B",
deleted: false
}
现在我想要的是获取所有数据，如果是type = "A", then add an extra condition to my match query, suppose compare its date with current date。
我当前的查询是：
db.getCollection('myCollection').aggregate([
{$match:{
{"deleted":false},
// I want to check if type is A then compare its date
}}
])
答案 0 :(得分：1)
在pi@picroft:~ $ bash ./update.sh
Would you like to install Picroft on this machine?
Choice [Y/N]: mkdir: cannot create directory ‘/etc/mycroft/’: File exists
mkdir: cannot create directory ‘/home/pi/bin’: File exists
--2018-10-31 10:57:28-- https://raw.githubusercontent.com/MycroftAI/enclosure-picroft/stretch/etc/mycroft/mycroft.conf
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.116.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.116.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 285 [text/plain]
Saving to: ‘mycroft.conf’
mycroft.conf 100%[===================>] 285 --.-KB/s in 0s
Last-modified header missing -- time-stamps turned off.
2018-10-31 10:57:28 (3.00 MB/s) - ‘mycroft.conf’ saved [285/285]
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin pi --noclear %I 38400 linux
tmpfs /ramdisk tmpfs rw,nodev,nosuid,size=20M 0 0
Installing 'git'...
Reading package lists... Done
Building dependency tree
Reading state information... Done
git is already the newest version (1:2.11.0-3+deb9u4).
The following packages were automatically installed and are no longer required:
erlang-base erlang-crypto erlang-syntax-tools fonts-lato icedtea-netx-common
libatk-wrapper-java libatk-wrapper-java-jni libboost-thread1.62.0
libqt5opengl5 libqt5scintilla2-12v5 libqt5scintilla2-l10n libqt5x11extras5
libqwt-qt5-6 libruby2.3 libscsynth1 libsctp1 libyaml-0-2 rake ruby
ruby-did-you-mean ruby-minitest ruby-net-telnet ruby-power-assert
ruby-test-unit ruby2.3 rubygems-integration
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up ca-certificates-java (20170531+nmu1) ...
Error: missing `server' JVM at `/usr/lib/jvm/java-8-openjdk-armhf/jre/lib/arm/server/libjvm.so'.
Please install or use the JRE or JDK that contains these missing components.
dpkg: error processing package ca-certificates-java (--configure):
subprocess installed post-installation script returned error exit status 4
dpkg: dependency problems prevent configuration of openjdk-8-jre-headless:armhf:
openjdk-8-jre-headless:armhf depends on ca-certificates-java; however:
Package ca-certificates-java is not configured yet.
dpkg: error processing package openjdk-8-jre-headless:armhf (--configure):
dependency problems - leaving unconfigured
Processing triggers for ca-certificates (20161130+nmu1+deb9u1) ...
Updating certificates in /etc/ssl/certs...
0 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
Error: missing `server' JVM at `/usr/lib/jvm/java-8-openjdk-armhf/jre/lib/arm/server/libjvm.so'.
Please install or use the JRE or JDK that contains these missing components.
E: /etc/ca-certificates/update.d/jks-keystore exited with code 1.
done.
Errors were encountered while processing:
ca-certificates-java
openjdk-8-jre-headless:armhf
E: Sub-process /usr/bin/dpkg returned an error code (1)
Downloading 'mycroft-core'...
fatal: destination path 'mycroft-core' already exists and is not an empty directory.
Beginning building mycroft-core. This'll take a bit,
take a break. Results will be in the ~/build.log
Installing packages...
Reading package lists...
Building dependency tree...
Reading state information...
autoconf is already the newest version (2.69-10).
automake is already the newest version (1:1.15-6).
bison is already the newest version (2:3.0.4.dfsg-1).
build-essential is already the newest version (12.3).
curl is already the newest version (7.52.1-5+deb9u7).
flac is already the newest version (1.3.2-1).
git is already the newest version (1:2.11.0-3+deb9u4).
jq is already the newest version (1.5+dfsg-1.3).
libfann-dev is already the newest version (2.2.0+ds-3).
libffi-dev is already the newest version (3.2.1-6).
libglib2.0-dev is already the newest version (2.50.3-2).
libicu-dev is already the newest version (57.1-6+deb9u2).
libjpeg-dev is already the newest version (1:1.5.1-2).
libssl-dev is already the newest version (1.1.0f-3+deb9u2).
libtool is already the newest version (2.4.6-2).
mpg123 is already the newest version (1.23.8-1).
pkg-config is already the newest version (0.29-4).
portaudio19-dev is already the newest version (19.6.0-1).
python-gobject-2-dev is already the newest version (2.28.6-13).
python-setuptools is already the newest version (33.1.1-1).
python3 is already the newest version (3.5.3-1).
python3-dev is already the newest version (3.5.3-1).
screen is already the newest version (4.5.0-6).
swig is already the newest version (3.0.10-1.1).
The following packages were automatically installed and are no longer required:
erlang-base erlang-crypto erlang-syntax-tools fonts-lato icedtea-netx-common
libatk-wrapper-java libatk-wrapper-java-jni libboost-thread1.62.0
libqt5opengl5 libqt5scintilla2-12v5 libqt5scintilla2-l10n libqt5x11extras5
libqwt-qt5-6 libruby2.3 libscsynth1 libsctp1 libyaml-0-2 rake ruby
ruby-did-you-mean ruby-minitest ruby-net-telnet ruby-power-assert
ruby-test-unit ruby2.3 rubygems-integration
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up ca-certificates-java (20170531+nmu1) ...
Error: missing `server' JVM at `/usr/lib/jvm/java-8-openjdk-armhf/jre/lib/arm/server/libjvm.so'.
Please install or use the JRE or JDK that contains these missing components.
dpkg: error processing package ca-certificates-java (--configure):
subprocess installed post-installation script returned error exit status 4
dpkg: dependency problems prevent configuration of openjdk-8-jre-headless:armhf:
openjdk-8-jre-headless:armhf depends on ca-certificates-java; however:
Package ca-certificates-java is not configured yet.
dpkg: error processing package openjdk-8-jre-headless:armhf (--configure):
dependency problems - leaving unconfigured
Processing triggers for ca-certificates (20161130+nmu1+deb9u1) ...
Updating certificates in /etc/ssl/certs...
0 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
Error: missing `server' JVM at `/usr/lib/jvm/java-8-openjdk-armhf/jre/lib/arm/server/libjvm.so'.
Please install or use the JRE or JDK that contains these missing components.
E: /etc/ca-certificates/update.d/jks-keystore exited with code 1.
done.
Errors were encountered while processing:
ca-certificates-java
openjdk-8-jre-headless:armhf
E: Sub-process /usr/bin/dpkg returned an error code (1)
Build complete. Press any key to review the output before it is deleted.
条件下使用$match。
$or答案 1 :(得分：1)
您可以尝试使用dense_rank()并说“如果不是键入A 或，则日期为x”：
$or