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Mysql rsqlite\u send\u查询中出错(conn@ptr,声明):接近“;(“语法错误”)______Mysql_Sql_R_Sqldf - Fatal编程技术网

Mysql rsqlite\u send\u查询中出错(conn@ptr,声明):接近“;(“语法错误”)_____

Mysql rsqlite\u send\u查询中出错(conn@ptr,声明):接近“;(“语法错误”)_____,mysql,sql,r,sqldf,Mysql,Sql,R,Sqldf,我在将行转换为列时出现了这个错误 library(sqldf) sqldf("SELECT id,name,ROW_NUMBER() over (PARTITION BY id order by id) as row_no FROM dd") rsqlite\u send\u查询中出错(conn@ptr,语句):靠近“(”:语法 错误_____ 我应该怎么做,或者请给我一个替代方案,因为我想在闪亮的应用程序中使用它sqlite不支持分区 您可能需要检查假设我们有: library(sqldf)

我在将行转换为列时出现了这个错误

library(sqldf)
sqldf("SELECT id,name,ROW_NUMBER() over (PARTITION BY id order by id) as row_no FROM dd")
rsqlite\u send\u查询中出错(conn@ptr,语句):靠近“(”:语法 错误_____


我应该怎么做,或者请给我一个替代方案,因为我想在
闪亮的
应用程序中使用它
sqlite
不支持分区

您可能需要检查

假设我们有:

library(sqldf)
dd <- data.frame(id = c(1, 2, 3), name = c("A", "B", "C"), X = 1:9)
库(sqldf)
dd这是的副本吗?可能是的副本
# 1. PostgreSQL - supports over/partition

library(RPostgreSQL)
sqldf("SELECT id, name, \"X\", ROW_NUMBER() over (PARTITION BY id order by id) as row_no 
       FROM dd order by id")

# 2. SQLite - does not support over/partition, use join instead

# Ensure RPostgreSQL is NOT loaded to force use of SQLite.
sqldf("select a.*, count(*) row_no 
       from dd a join dd b on a.id = b.id and b.rowid <= a.rowid
       group by a.rowid
       order by a.rowid")

# 3. Base R

transform(dd, row_no = ave(1:nrow(dd), id, FUN = seq_along))