# lib/tasks/active_record_import.rakerequire'csv'require"benchmark"namespace:importdodesc"imports data from csv to postgresql"users=[]task:batch_record=>:environmentdoCSV.foreach(filename,headers:true)do|row|users<<rowendnewusers=users.mapdo|attrs|User.new(attrs)endtime=Benchmark.realtime{User...
The utility gets the names of the columns from the first row of the CSV file. I wrote this utility because I was tired of doing always small scripts for doing this kind os loads. By now the utility suport MySQL, PostgresSQL and sqlite, but can be used with other SQL databases using...
i am trying to import data contained in csv files created by DB2. One of the fields is TIME DB2 format i.e. "HH24.MI.SS" thus separated by dot. Postgres expects in the format "HH24:MI:SS" .There is a way to transform it ? Many thanks For example : my table is declared create...
runs in a worker process, in the same app as CKAN, so can access the CKAN config, db and logging directly and avoids many HTTP calls. This simplification makes sense because the xloader job doesn't need to do much processing - mainly it is streaming the CSV file from disk into ...
Create a User-Defined Function to Load CSV to an Array in JavaScript We will use theFileReaderclass to read the required CSV file as a string. To store this into an array, we will use theslice(),split(), andmap()functions. Theslice()function helps return a new array with a portion ...
This indicates that the bottleneck during this period involved reading a CSV file from STDIN on the client machine. Getting information about what the server is waiting on has proven extremely difficult in the past. Postgres Workload Reports now makes it simple. You can evaluate wait events for...
INFILE "users_data.csv"--指定外部数据文件,可以是不同格式的数据文件,如csv、txt都支持可以写多个 INFILE "another_data_file.csv" 指定多个数据文件truncate--操作类型,用 truncate table 来清除表中原有记录,根据情况而定是否需要清楚原有表中数据INTOTABLEusers--要插入记录的表Fields terminatedby","--数据中...
data = csv.reader(csvfile,delimiter='\t')forrowindata:if(len(row) ==4):# Load loci in pgsql statementsifrow[0]inrsidListandrsidList[row[0]] >0:# If RSID value is present, load with PKinsStr ="INSERT INTO locus (mrna_acc, gene, class, snp_id) VALUES ('{0}', '{1}', '...
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One way of doing that would be to load the data into S3 usingAWS node.js SDK(there's anexamplein the documentation), then usenode-pgtoCOPYthe data into Redshift : var pg = require('pg'); var conString = "postgres://user:password@db-endpoint:port/schema"; var client = new pg.Cl...