convert mysql to postgresql

Original article: Http://www.phpwell.com /? P = 174 PostgreSQL MySQL Service startup:1) # service PostgreSQL start2) #/etc/init. d/PostgreSQL start3) # Su-PostgreSQL$ Pg_ctl startPostgreSQL process number: 1210, 1207, Service startup:1) # s

with "\" in psql. -bash-4.1$ psql -E postgres psql (8.4.20) Type "help" for help. postgres=# \d ********* QUERY ********** SELECT n.nspname as "Schema", c.relname as "Name", CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence'WHEN 's' THEN 'special' END as "Type", pg_catalog.pg_get_userbyid(c.relowner) as "Owner" FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN ('r','v','

the hard disk files, while Stringio is in memory of the file Output=stringio () #也可以直接将字符串转换成内存文件, the #将数据保存 To ' file ' if not df:47 df=sql_to_df () df.to_csv (output,sep= ' \ t ', Index=false,header=false) #使文件定 Bit to first character Output.seek (0) Wuyi try:52 conn=psycopg2.connect (database=db,**conf["Postgres"]) cur= Conn.cursor () Cur.copy_from (output,table,null= ") Conn.commit () Result=cur.rowcount 57 finally:58 cur.close () conn.close () return result (if __name__== ' __main__ '

We are all familiar with MySQL, and PostgreSQL is not so famous. in fact, they are two similar relational databases. postgreSQL was originally named Postgres. After some improvements, it was renamed PostgreSQL. for details, visit the official website. MySQL Official Website:

1, MySQL relatively young, for the first appearance in 1994 years. It claims to be the most popular open source database. MySQL is the M in the lamp (for web development packages, including Linux, Apache, and Perl/php/python). Most applications built on the lamp stack use MySQL, including those that are well-known applications such as WordPress, Drupal, Zend, and

Label:MySQL's 2 commonly used functions Unix_timestamp () and From_unixtime PostgreSQL are not available, but with PostgreSQL's powerful extensibility It is easy to solve problems.Words far away, in front of the eyes, the document look carefully, the question Ren solution. PostgreSQL questions for extract and date_part to take epochThatUnix_timestamp () = Round (Date_part (' Epoch ', Now ()))From_unixtime (

Tags: www hit multiple instance cache Jdb LTE GIS reverse MIT Characteristics Mysql PostgreSQL Instance Launch the instance by executing the MySQL command (MYSQLD). One instance can manage one or more databases. A single server can run multiple mysqld instances. An instance manager can monitor individual instances of

Tags: mysql res font erb span digital time hsql bugIn the process of changing the bug, the SQL statement error, but a look at the back of the console, and did not burst the previous specific database error reasons, butSqlerrorcodes loaded: [DB2, Derby, H2, HSQL, Informix, Ms-sql, MySQL, Oracle, PostgreSQL, Sybase]At first I thought it was a configuration file loa