Connect to the database, the default user and the database is Postgres
psql -d dbname -U the User
Switching database, corresponding to the mysql dbname use
\ C dbname
include a database, corresponding to the mysql Databases Show
\ L
include tables corresponding to Tables mysql the Show
\ dt
Display structure corresponds tblname desc, Show Columns from tbName
\ D tblname
\ Di View Index
Create a database:
the Create Database [database name];
delete the database:
drop Database [database name];
* rename a table:
the ALTER the Table [table name A] rename to [table name B];
* Delete a table:
drop the Table [table name];
* Add the existing table fields:
the ALTER the Table [table name] add column [field name] [type];
* delete fields in the table:
the ALTER the Table [table name] drop column [field name];
* Renaming a field:
ALTER table [table] rename column [field name a] to [name field B];
* to set a default value field:
ALTER table [table] alter column [field name] set default [new default ];
* removed default:
ALTER table [table] alter column [field name] drop default;
insert data in the table:
iNSERT INTO table name ([field name m], [field name n], .... ..) values ([column values of m], [n the value of the column], ......);
a data table in a column of a row modifications:
Update [table] SET [target field name] = [target] where [the line feature];
delete a row of data in the table:
the delete from [table name] where [the line feature];
the delete from [table name]; - delete empty the entire table
to create the table:
create table ([Field Name 1] [Type 1] <references associated table name (associated with the field name)>;, [2 Field Name] [Type 2], ...... <, primary key (field name m , the field name n, ...)>;);
\ copyright show PostgreSQL use and distribution terms
\ encoding [character encoding name]
Display or set the client character encoding
\ h [name] SQL command syntax for instructions on using * All commands
\ prompt [text] name
prompt the user sets the internal variable
\ password [USERNAME]
Securely The Change password for user A
\ Q exit psql