Question

select line_number, TIME

from LINE join LINE_STOP join PASSAGE

where time = (select count (Time)

from passage

where time between 500 and 620)

group by line_number;

有人能告诉我我的错误在哪里吗？

Answer 1

@Gordon Linoff更正!! TIME是Oracle中的PL / SQL保留字，可用于独立于PL / SQL代码的SQL查询。但在这里，将时间与计数值等同确实会引起混淆。我的猜测，Valerie试图用它来计算次数，line_number重复或类似的事情。

'missing keyword'错误是因为你没有使用'ON'关键字，如果你使用Join语句，这是必须的。

@ValérieHallé如果你试图像我上面所说的那样做，试试这个，

variable <- c("A1","B1","C1","D1","A1","B1","C1","D1","A1","B1","C1","D1")
period <- c("P1","P1","P1","P1","P2","P2","P2","P2","P3","P3","P3","P3")

coef <- runif(12, -1, 1)
coef_lb <- coef-0.3
coef_ub <- coef+0.3

df<- data.frame(variable,period,coef,coef_lb,coef_ub)

df$period <- factor(df$period,levels=c("P1","P2","P3"))

library(ggplot2)
bpdiaplot <- ggplot(data=df,aes(x=period,y=coef))
bpdiaplot <- bpdiaplot + facet_grid(.~variable,labeller = label_parsed)
bpdiaplot <- bpdiaplot + geom_pointrange(aes(ymin=coef_lb,ymax=coef_ub))
bpdiaplot <- bpdiaplot + geom_point() 
bpdiaplot <- bpdiaplot + scale_y_continuous(limits=c(-1.4, 1.4),breaks=seq(-1.4, 1.4, by = 0.3))
bpdiaplot <- bpdiaplot + xlab("Period") 
bpdiaplot <- bpdiaplot + ylab("Mean difference") 
bpdiaplot <- bpdiaplot + geom_hline(yintercept=0,alpha=0.5)
bpdiaplot <- bpdiaplot + theme_bw()
bpdiaplot <- bpdiaplot + theme(axis.text = element_text(colour = "black"))
bpdiaplot <- bpdiaplot + theme(axis.text.x=element_text(angle = 45, hjust = 1))

这应该有效。如果没有，请回复我： - ）

缺少关键字错误ora-00905

1 个答案: