R语言 RPostgreSQL包 PostgreSQLResult-class()函数中文帮助文档(中英文对照)

loveR

PostgreSQLResult-class(RPostgreSQL)
PostgreSQLResult-class()所属R语言包：RPostgreSQL

                                        Class PostgreSQLResult
                                         类PostgreSQLResult

                                         译者：生物统计家园网 机器人LoveR

描述----------Description----------

PostgreSQL's query results class.  This classes encapsulates the result of an SQL statement (either select or not).
PostgreSQL的查询结果类。这个类封装了一个SQL语句的结果（无论是select与否）。


发电机----------Generators----------

The main generator is dbSendQuery.
的主发电机dbSendQuery。


扩展----------Extends----------

Class "DBIResult", directly. Class "PostgreSQLObject", directly. Class "DBIObject", by class "DBIResult". Class "dbObjectId", by class "PostgreSQLObject".
类"DBIResult"，直接。类"PostgreSQLObject"，直接。类"DBIObject"，通过类“DBIResult”。类"dbObjectId"，通过类“PostgreSQLObject”。


方法----------Methods----------




coerce signature(from = "PostgreSQLConnection", to = "PostgreSQLResult"): ...
要挟signature(from = "PostgreSQLConnection", to = "PostgreSQLResult")：...




dbClearResult signature(res = "PostgreSQLResult"): ...
dbClearResult signature(res = "PostgreSQLResult")...




dbColumnInfo signature(res = "PostgreSQLResult"): ...
DBCOLUMNINFO signature(res = "PostgreSQLResult")...




dbGetException signature(conn = "PostgreSQLResult"): ...
dbGetException signature(conn = "PostgreSQLResult")...




dbGetInfo signature(dbObj = "PostgreSQLResult"): ...
dbGetInfo signature(dbObj = "PostgreSQLResult")...




dbGetRowCount signature(res = "PostgreSQLResult"): ...
dbGetRowCount signature(res = "PostgreSQLResult")...




dbGetRowsAffected signature(res = "PostgreSQLResult"): ...
dbGetRowsAffected signature(res = "PostgreSQLResult")...




dbGetStatement signature(res = "PostgreSQLResult"): ...
dbGetStatementsignature(res = "PostgreSQLResult")：...




dbHasCompleted signature(res = "PostgreSQLResult"): ...
dbHasCompleted signature(res = "PostgreSQLResult")...




dbListFields signature(conn = "PostgreSQLResult", name = "missing"): ...
dbListFieldssignature(conn = "PostgreSQLResult", name = "missing")：...




fetch signature(res = "PostgreSQLResult", n = "numeric"): ...
取signature(res = "PostgreSQLResult", n = "numeric")：...




fetch signature(res = "PostgreSQLResult", n = "missing"): ...
取signature(res = "PostgreSQLResult", n = "missing")：...




summary signature(object = "PostgreSQLResult"): ...
总结signature(object = "PostgreSQLResult")：...


参考文献----------References----------

<code>DBI.pdf</code> in the base directory of this package or http://developer.r-project.org/db

参见----------See Also----------

DBI base classes:
DBI的基类：

DBIObject-class DBIDriver-class DBIConnection-class DBIResult-class
DBIObject-classDBIDriver-classDBIConnection-classDBIResult-class

PostgreSQL classes:
PostgreSQL的类：

PostgreSQLObject-class PostgreSQLDriver-class PostgreSQLConnection-class PostgreSQLResult-class
PostgreSQLObject-classPostgreSQLDriver-classPostgreSQLConnection-classPostgreSQLResult-class


实例----------Examples----------


drv <- dbDriver("PostgreSQL")
con <- dbConnect(drv, dbname = "template1")
## rs is the result set[＃rs是结果集]
rs <- dbSendQuery(con,"select * from sales")
## display the first three values of result set[＃显示的结果集的前三个值]
fetch(rs,n=3)

## End(Not run)[＃（不执行）]

转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。


注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。