打开CSV文件并读取数据: 代码语言:txt 复制 with open('your_csv_file.csv', 'r') as file: reader = csv.reader(file) next(reader) # 跳过标题行 for row in reader: # 将每一行数据插入到表格中 cur.execute("INSERT INTO your_table (column1, column2, ...) VALUES (%s, %s, ...)", row...
CSV是一种紧凑，简单且通用的数据交换通用格式。许多在线服务允许其用户将网站中的表格数据导出到CSV文件...
INSERT INTO `emp` VALUES ('1204', 'prasanth', 'php dev', '30000', 'AC'); INSERT INTO `emp` VALUES ('1205', 'kranthi', 'admin', '20000', 'TP'); -- --- -- Table structure for `emp_add` -- --- DROP TABLE IF EXISTS `emp_add`; CREATE TABLE `emp_add` ( `id` int(...
# 创建一个表mydb=# create table testtable1(id int, tname varchar(20));mydb=# insert into testtable1 select n,'myname_'||n from generate_series(1,5000000) n;mydb=# explain analyze select * from testtable1 where tname='myname_10';QUERY PLAN --- Gather (cost=1000.00..58878.99 ...
INSERT INTO image_embeddings (image_path, embeddings) VALUES (%s, %s) ON CONFLICT (image_path) DO UPDATE SET embeddings = EXCLUDED.embeddings ; """withpsycopg.connect(DATABASE_URL)asconn:withconn.cursor()ascur: cur.execute(init_pg_vector)cur.execute(init_table)forimageinimages: ...
wc -l /home/postgres/file_fdw.csv 3333 /home/postgres/file_fdw.csv --创建extension postgres=# CREATE EXTENSION file_fdw; CREATE EXTENSION --创建server postgres=# CREATE SERVER file_fdw_server FOREIGN DATA WRAPPER file_fdw; CREATE SERVER --创建外部表 postgres=# CREATE FOREIGN TABLE csvTable ...
DELETE FROM tablename WHERE condition; “` 将`tablename` 替换为要删除数据的表的名称,`condition` 为指定删除条件的表达式。注意,这将删除符合条件的所有行。 ## 导入和导出数据 1. 导入数据到表中,可以使用以下命令: “`sql \copy tablename FROM ‘file’ DELIMITER ‘,’ CSV HEADER; ...
('movies.csv'); -- 创建PostgreSQL表并加载电影数据 create extension if not exists ai cascade; create table movie ( id int not null primary key , title text not null , overview text , genres text , producer text , "cast" text ); \copy movie from 'movies.csv' with (format csv, ...
--csv CSV (Comma-Separated Values) table output mode -F, --field-separator=STRING field separatorforunaligned output (default:"|") -H, --html HTML table output mode -P, --pset=VAR[=ARG]setprinting option VAR to ARG (see \psetcommand) ...
# 创建一个表 mydb=# create table testtable1(id int, tname varchar(20)); mydb=# insert into testtable1 select n,'myname_'||n from generate_series(1,5000000) n; mydb=# explain analyze select * from testtable1 where tname='myname_10'; QUERY PLAN --- Gather (cost=1000.00..588...