postgres analyze

Tags: select Name records width INF from HTTP POST VATThe first step is to download the Postres driver on the Internet, after installation,: https://www.devart.com/odbc/postgresql/download.htmlSecond step to create an ODBC data sourceClick "Start-" control Panel-"Management tools-" data source (ODBC)-"User dsn-" Add "Write VBA code after the installation is configured.private Sub CommandButton1_Click () Dim CNN as New ADODB. Connection Dim rs as New ADODB. Recordset Dim dataBase As String Dim us

Tags: Data Manager man OWIN EPS 3.1 lib Apt-get codeSteps that worked for me Ubuntu 8.04.2 on to removepostgres 8.3 List all Postgres Related packages dpkg-l | grep postgresii PostgreSQL 8.3.17-0ubuntu0.8.04.1 Object-relati Onal SQL Database (latest VERSIII postgresql-8.3 8.3.9-0ubuntu8.04 Object-relationa L SQL Database, version 8.3ii postgresql-client 8.3.9-0ubuntu8.04 front-end programs F or PostgreSQL (latest Veii postgresql-client-8.3 8.3.

postgres8.4 Installation configuration:1. Installing postgres8.4~$ sudo apt-get install PostgreSQL2. Modify the Super admin Postgres Password:Run Psql as a system user~$ sudo-u postgres psql postgresModify Postgres password (123456)postgres=#/password Postgres3. Back up the modified configuration file:Backing Up pg_hba

Transferred from: http://blog.csdn.net/yufenghyc/article/details/45869509--1 Examplepostgres=# Select 1/4;? column?----------0(1 row)In PG If you want to do division and want to keep decimals, the method above does not work, because the "/" Operation results are rounded, and the fractional part is truncated.--2 Type Conversionspostgres=# Select round (1:: Numeric/4:: Numeric,2);Round-------0.25(1 row)Note: After the type conversion, you can retain the fractional part.--3 can also be converted by

selectextract (ISOYEAR fromfromdate_) asyear_,--the year in which the week was made extract (WEEKFROM fromdate_) asweek_,--the year in which the week was made To_char (fromDate _, ' YYYYMMDD ') asfromdate_,--Week start date to_char (todate_, ' YYYYMMDD ') as End date of todate_--week from (select (date (curDate) -7*weeks_) asfromDate_, (date (curdate) -7*weeks_+6) as toDate_from (selectgenerate_series (1,100) weeks_, -- interval weeks (sequence, here take 100 weeks) cast (Date_trunc (' Week ',

128.0.0.0/16 128.0/16 128.1.2 128.1.2.0/24 128.1.2/24 10.1.2 10.1.2.0/24 10.1.2/24 10.1 10.1.0.0/16 10.1/16 10 10.0.0.0/8 10/8 10.1.2.3/32 10.1.2.3/32 10.1.2.3/32 2001:4f8:3:ba::/64 2001:4f8:3:ba::/64 2001:4f8:3:ba::/64 2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128 2001:4f8:3:ba:2e0:81ff:fe22:d1f1/128 2001:4f8:3:ba:2e0:81ff:fe22

That blue students:http://blog.163.com/li_hx/ Have the ideal pig:Http://my.oschina.net/quanzl Tangcheng (OSDBA): http://blog.osdba.net/ Sun Peng:http://blog.sciencenet.cn/home.php?mod=spaceuid=419883 Big belly Bear:http://www.cnblogs.com/daduxiong/category/257029.html Stephen_liu:http://www.cnblogs.com/stephen-liu74/archive/2012/06/08/2315679.html Note: Ranked in no particular order, after finding the right blog to add. --5 Video Tutorial PostgreSQL video Tutorial (with):http://www.tudou.com/ho

1 ImportPSYCOPG22 ImportPsycopg2.extras3 4conn = Psycopg2.connect (Database=self.dbname, User=self.username, Password=self.password, Host=self.host, port=self.port)5cursor = Self.conn.cursor (cursor_factory=psycopg2.extras.DictCursor)6sql =""7 cursor.execute (SQL)8rows =Self.cursor.fetchall ()9 #The elements in the rows at this point are the structure of the rowdict type,Ten forRowinchrows: One Printrow['a column name'] AccessReference: Http://yuanjun.me/postgresql/pythoncao-zuo-postgresql#

Pear::D B is the choice of a ADODB database, in addition to the Postgres, this article describes how to use DB to join the database with an example Installing pear is not covered in this article. In pear, the class that joins the database has the following: 1 "MDB"; 2 "MDB2: Because MDB2 's author has been looking forward to PDO into release status, so far MDB2 has been beta version;" 3 "PDO: Connection speed should be the fastest, is a C module, but

Every movie needs a director and every rented movie needs to exist in the store. How does we make sure something in another table exists before inserting new data? This lesson would teach us about foreign keys and references.CREATE TABLEdirectors (ID SERIALPRIMARY KEY, nameVARCHAR( -)UNIQUE not NULL);CREATE TABLEMovies (id SERIALPRIMARY KEY, titleVARCHAR( -) not NULL, release_date date, Count_starsINTEGER, director_idINTEGER REFERENCESdirectors (ID));Now, if we try to insert to movies table som

Tags: lease rect char LTE unique code name error STRLet's say we have a bank. Our bank wants to give each account for each user a unique name, for instance, "Personal" or "Checking." How can we do sure each account have a unique name for each user? ADD UNIQUE constraint when create a new table: CREATE TABLE directors ( PRIMARYKEY, VARCHAR(UNIQUE notNULL ) Change existing table, modify one field to is unique: ALTER TABLE ADD CONSTRAINT UNIQUE (name) So, if we trying to insert the dupl

Try{class.forname ("Org.postgresql.Driver"). newinstance (); String URL= "Jdbc:postgresql://localhost:5432/erp"; String User= "XX"; String pwd= "XX"; Connection Conn=drivermanager.getconnection (URL, user, pwd); Statement St=conn.createstatement (); ResultSet RS= St.executequery ("select * from goods_picture where MD5 is null"); ListNewArraylist(); inti = 0; while(Rs.next ()) {i++; Logger.debug (Rs.getstring (1));//IDLogger.debug (rs.getstring (2));//GoodsidLogger.debug (Rs.getstring (3));//seq

Number of records in table: 1578463 Select COUNT (*) from Reorder_guideline; Count---------1578463 (1 Row Records) 2. three statements creating tables CREATE TABLE: (1) most commonly used (23171.485ms) A1stream_db=> CREATE table reorder_guideline_2 as table reorder_guideline; Time: 23171.485 ms (2) with unlogged logo (1734.085ms) Create unlogged table reorder_guideline_2 as table reorder_guideline; Time: 1734.085 ms (3) temporary table with temp ID (1666.934ms) Create temp table reorder_gu

Found an article on the network http://www.linuxidc.com/Linux/2010-04/25232.htm, as follows: Ubuntu 9.10 under PostgreSQL 8. 4 solutions to forgotten passwords Ubuntu9.10 Next PostgreSQL 8. 4 Solutions to forgotten passwords:1. Edit the pg_hba.conf in the83# IPV4 Local connections:$ host All 127.0.0.1/32Trust[email protected]:/etc/postgresql/8.4/main$ sudo vim pg_hba.conf[email protected]:/etc/postgresql/8.4/main$ sudo/etc/init.d/postgresql-8.4restart* restarting PostgreSQL8.4Database Server2. [