mongodb将查询结果导出到文件
./mongoexport -h 127.0.0.1 -d seo -c kw_city -csv -o test1.csv -q '{state:ny}' -f city,state
注意事项：
在windows的cmd命令行导出linux服务器的数据是不能使用 -q参数的
options:
--help produce help message
-v [ --verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
--version print the program's version and exit
-h [ --host ] arg mongo host to connect to ( /s1,s2 for sets)
--port arg server port. can also use --host hostname:port
--ipv6 enable ipv6 support (disabled by default)
-u [ --username ] arg username
-p [ --password ] arg password
--dbpath arg directly access mongod database files in the given
path, instead of connecting to a mongod server -
needs to lock the data directory, so cannot be used
if a mongod is currently accessing the same path
--directoryperdb if dbpath specified, each db is in a separate
directory
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-f [ --fields ] arg comma separated list of field names e.g. -f name,age
--fieldfile arg file with fields names - 1 per line
-q [ --query ] arg query filter, as a json string
--csv export to csv instead of json
-o [ --out ] arg output file; if not specified, stdout is used
--jsonarray output to a json array rather than one object per