{"id":2794,"date":"2018-06-27T15:30:28","date_gmt":"2018-06-27T07:30:28","guid":{"rendered":"http:\/\/blg.sofasay.com\/?p=2794"},"modified":"2018-06-27T17:52:15","modified_gmt":"2018-06-27T09:52:15","slug":"r-connect-to-db-via-jdbc","status":"publish","type":"post","link":"http:\/\/blog.sofasay.com\/?p=2794","title":{"rendered":"R connect to DB via JDBC"},"content":{"rendered":"

 <\/p>\n

\u4f7f\u7528JDBC\u8fde\u63a5\u6570\u636e\u5e93\u66f4\u901a\u7528\uff0c\u53ea\u8981\u6709\u5bf9\u5e94\u6570\u636e\u5e93\u7684JDBC driver\uff0c\u6709Java\u73af\u5883\uff0c\u57fa\u672c\u53ef\u4ee5\u8fde\u4e0a\u6240\u6709\u5e38\u89c1\u7684\u6570\u636e\u5e93\u3002\u6240\u4ee5\u6211\u503e\u5411\u4e8e\u7528\u5ba2\u6237\u7aef Squirrel + jdbc \u8fde\u63a5\u6570\u636e\u5e93\u8fdb\u884c\u4e00\u822c\u7684\u6570\u636e\u67e5\u8be2\u548c\u5904\u7406\u3002 R \u4e2d\u8fde\u63a5\u53ea\u9700\u8981\u4ee5\u4e0b\u51e0\u6b65\u3002<\/p>\n

R\u8fde\u63a5\u5230Postgresql<\/h5>\n

\u67e5\u8be2\u7528 dbGetQuery, DML\u8bed\u53e5\u7528 dbSendQuery, DDL\u8bed\u53e5\u7528 dbSendUpdate<\/p>\n

library(RJDBC)
\npDriver <- JDBC(driverClass=”org.postgresql.Driver”, classPath=”C:\/Squirrel3.0\/lib\/postgresql-9.4.1211.jre6.jar”)
\n#pDriver <- JDBC(driverClass=”org.postgresql.util.PGJDBCMain”, classPath=”C:\\\\Squirrel3.0\\\\lib\\\\postgresql-9.4.1211.jre6.jar”)
\npconn <- dbConnect(pDriver, “jdbc:postgresql:\/\/postgresql_svr_name_ip:5432\/databasename?autosave=always”, “dbuser”, “password”)
\ninput.data <- dbGetQuery(pconn, “select\u00a0\u00a0 * from pg_tables limit 10”)
\ndbDisconnect(pconn) #\u53ef\u6709\u53ef\u65e0<\/p>\n

========================<\/p>\n

R\u8fde\u63a5\u5230Vertica<\/h5>\n

library(RJDBC)
\nvDriver <- JDBC(driverClass=”com.vertica.jdbc.Driver”, classPath=”C:\/Squirrel3.0\/lib\/vertica-jdbc-7.0.1-0.jar”)
\nvconn <- dbConnect(vDriver, “jdbc:vertica:\/\/vertica_svr_name_ip:5433\/databasename”, “dbuser”, “password”)
\ninput.data <- dbGetQuery(vconn, “select * from tables limit 10”)<\/p>\n

========================<\/p>\n

R\u8fde\u63a5\u5230Oracle<\/h5>\n

library(RJDBC)
\noDriver <- JDBC(driverClass=”oracle.jdbc.OracleDriver”, classPath=”C:\\\\Squirrel3.0\\\\lib\\\\ojdbc6.jar”)
\noconn <- dbConnect(oDriver, “jdbc:oracle:thin:@oracle_svr_name_ip:1521:databasename”, “dbuser”, “password”)
\ninput.data <- dbGetQuery(oconn,”select * from all_tables limit 10″)<\/p>\n

========================<\/p>\n

R\u8fde\u63a5\u5230Mysql<\/h5>\n

mDriver <- JDBC(driverClass=”com.mysql.jdbc.Driver”, classPath=”C:\/Squirrel3.0\/lib\/mysql-connector-java-5.1.46.jar”)
\nmconn <- dbConnect(mDriver, “jdbc:mysql:\/\/mysql_svr_name_ip:3306\/databasename”, “dbuser”, “password”)
\ninput.data <- dbGetQuery(mconn, “select * from information_schema.tables limit 10”)<\/p>\n

========================<\/p>\n

R\u8fde\u63a5\u5230Microsoft Sqlserver<\/h5>\n

\u517c\u5bb9mssql 2003\u4e4b\u524d\u7684\u7248\u672c<\/p>\n

mssDriver <- JDBC(driverClass=”com.microsoft.sqlserver.jdbc.SQLServerDriver”, classPath=”C:\/Squirrel3.0\/lib\/mssqljdbc41.jar”)
\nmssconn <- dbConnect(mssDriver , “jdbc:sqlserver:\/\/mssql_svr_name_ip:1433;databaseName=databasename”, “dbuser”, “password”)
\ninput.data <- dbGetQuery(mssconn , “select * from sysobjects limit 10”)<\/p>\n

========================<\/p>\n

R\u8fde\u63a5\u5230Teradata<\/h5>\n

tDriver<- JDBC(driverClass=”com.teradata.jdbc.TeraDriver”, classPath=”C:\/Squirrel3.0\/lib\/terajdbc4.jar;C:\/Squirrel3.0\/lib\/tdgssconfig.jar”)
\ntconn <- dbConnect(tDriver, “jdbc:teradata:\/\/Tera_svr_name_ip\/TMODE=TERA”, “username”, “password”)
\ninput.data <- dbGetQuery(tconn,”select top 10 * from dbc.dbcinfo”)<\/p>\n

 <\/p>\n

\u6240\u7528\u5230\u7684jar\u5305\u90fd\u5728Squerriel\/lib\u76ee\u5f55\u4e0b\u3002 \u4e0b\u8f7d [\u5c0f\u677e\u9f20] Squirrel SQL Client Portable: https:\/\/1drv.ms\/u\/s!AtVaUU1SN60KhTXulW5JdrTNGF0E<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

  \u4f7f\u7528JDBC\u8fde\u63a5\u6570\u636e\u5e93\u66f4\u901a\u7528\uff0c\u53ea\u8981\u6709\u5bf9\u5e94\u6570\u636e\u5e93\u7684JDBC driver\uff0c\u6709Java\u73af\u5883\uff0c\u57fa\u672c\u53ef\u4ee5 … \u7ee7\u7eed\u9605\u8bfb\u201cR connect to DB via JDBC\u201d<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[13,464],"tags":[468,467,414],"views":779,"_links":{"self":[{"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=\/wp\/v2\/posts\/2794"}],"collection":[{"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2794"}],"version-history":[{"count":0,"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=\/wp\/v2\/posts\/2794\/revisions"}],"wp:attachment":[{"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2794"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.sofasay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}