); ALTER TABLE tablename ADD PRIMARY KEY (id); CREATE INDEX tablename_master_id ON tablename USING btree (master_id); CREATE INDEX tablename_code ON tablename USING btree (code); 四、COPY COPY tablename FROM '/u0
INSERT INTO table [ ( column [, ...] ) ] { DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) | query }LISTEN监听一个通知。LISTEN nameLOAD加载或重载一个共享库文件。 LOAD 'filename'LOCK锁定一个表。LOCK [ TABLE ] name [, ...] [ IN lock_mode MODE ] [ NOWAIT ]...
There are a few things to keep in mind when copying data from a csv file to a table before importing the data: Make a Table: There must be a table to hold the data being imported. In order to copy the data, a table must be created with the proper table structure (number of column...
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...
[-D DATADIR] Dataload options: -i, --input=INPUT INPUT path or function -O, --output=OUTPUT OUTPUT path or table -l, --logfile=LOGFILE LOGFILE path -P, --parse-badfile=* PARSE_BADFILE path -u, --duplicate-badfile=* DUPLICATE_BADFILE path -o, --option="key=val" additional ...
1SELECTarray_to_string(array(2selectattnamefrompg_attributewhereattrelid='表名称'::regclassandattnum>03andattisdropped='f'4),',')asname 有兴趣可以试试。 3.下载csv文件 4.编辑*.ctl控制文件 1loaddata2CHARACTERSET UTF83infile "/home/oracle/hthhf.csv"4truncate5intotablet_yw_hthhf_old6fields...
Dataload: pg_bulkload[dataload options]control_file_path Recovery: pg_bulkload-r[-D DATADIR]Dataload options: -i,--input=INPUT INPUT path orfunction-O,--output=OUTPUT OUTPUT path or table -l,--logfile=LOGFILE LOGFILE path -P, --parse-badfile=* PARSE_BADFILE path ...
CREATETABLEpublic.mesh ( xintegerNOTNULL, yintegerNOTNULL, zinteger,CONSTRAINTprimPRIMARYKEY (x, y) ) 1. 导入 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 ...
effective_cache_size = 48GB log_destination = 'csvlog' logging_collector = on log_directory = 'log' log_filename = 'postgresql-%a.log' log_truncate_on_rotation = on log_rotation_age = 1d log_rotation_size = 0 log_min_duration_statement = 1s log_ch...
[postgres@ora19c ~]$ pg_bulkload -i /home/postgres/bulk_test2.txt -O test2 -l /home/postgres/test2.log -P /home/postgres/test2.txt -o "TYPE=CSV" -o "DELIMITER=|" -d testdb -U postgres -h 127.0.0.1 NOTICE: BULK LOAD START ...