public static void main(String[] args) throws SQLException, IOException { LoadCSVFile load = new LoadCSVFile(); Connection conn = load.getConnection(); // 查看表中目前的数据,并清空表 String[] initArray = {"truncate table test"}; load.executeSQL(conn, initArray); // 这里的核心就是使用o...
('csv_to_postgres', default_args=default_args, schedule_interval='@daily') def load_csv_to_postgres(): # 读取CSV文件 df = pd.read_csv('/path/to/your/file.csv') # 连接到PostgreSQL数据库 conn = psycopg2.connect( host="localhost", database="your_database", user="your_user", ...
use Maatwebsite\Excel\Facades\Excel; use App\Imports\LargeCsvImport; public function importCsv(Request $request) { $file = $request->file('csv_file'); // 使用分块读取的方式导入大型 CSV 文件 Excel::filter('chunk')->load($file)->chunk(500, function ($results) { foreach ($results as...
t_girl=# copy t1 from '/tmp/t1.csv' with delimiter ','; COPY 1000000 Time: 7700.332 ms Psycopg2 驱动copy_to方法:(时间6秒) [root@postgresql-instance scripts]# python load_data.py Running 5.969 Seconds. Pgloader 导入CSV:(时间33秒) [root@postgresql-instance ytt]# pgloader commands.load ta...
FROM { 'filename' | STDIN } [ WITH ] [ BINARY ] [ OIDS ] [ DELIMITER [ AS ] 'delimiter' ] [ NULL [ AS ] 'null string' ] [ CSV [ QUOTE [ AS ] 'quote' ] [ ESCAPE [ AS ] 'escape' ] [ FORCE NOT NULL column [, ...] ] ...
使用数据备份,csv格式导入,文件位于机械硬盘上,480MB,数据量2500w+。 使用COPY copymeshfrom'd:/user.csv'csv 运行时间107s 使用insert 单连接,c# release any cpu 非调试模式。 classProgram{staticvoidMain(string[] args){ varlist= GetData("D:\\user.csv"); ...
This data contains two columns: ‘name’ and ‘price.’ Name appears to be a VARCHAR due to it’s different lengths. Price appears to be MONEY. This will help in creating the table to load the CSV file into. The first step, as stated before, is to create the table. It must have ...
TO { 'filename' | STDOUT } [ [ WITH ] [ BINARY ] [ OIDS ] [ DELIMITER [ AS ] 'delimiter' ] [ NULL [ AS ] 'null string' ] [ CSV [ QUOTE [ AS ] 'quote' ] [ ESCAPE [ AS ] 'escape' ] [ FORCE QUOTE column [, ...] ] ...
COPY table_name [ ( column [, ...] ) ] FROM { 'filename' | STDIN } [ WITH ] [ BINARY ] [ OIDS ] [ DELIMITER [ AS ] 'delimiter' ] [ NULL [ AS ] 'null string' ] [ CSV [ QUOTE [ AS ] 'quote' ] [ ESCAPE [ AS ] 'escape' ] [ FORCE NOT NULL column [, ...] ...
log_filename = 'postgresql-%d.csv' # 当logging_collector被启用时,这个参数设置被创建的日志文件的文件名。 # 该值被视为一种strftime模式,因此%转义可以被用来指定根据时间变化的文件名 # 注意如果有任何时区独立的%转义,计算将在由log_timezone指定的时区中完成 ...