1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
library("RSQLite")
DATA <- new.env(parent=emptyenv(), hash=TRUE)
.setUp <- function() {
DATA$dbfile <- tempfile()
DATA$db <- dbConnect(dbDriver("SQLite"), DATA$dbfile)
}
.tearDown <- function() {
lapply(dbListResults(DATA$db), dbClearResult)
dbDisconnect(DATA$db)
file.remove(DATA$dbfile)
}
basicTableSql <- ('
create table t1 (name text, id integer, rate real)
')
basicDf <- data.frame(name=c("Alice", "Bob", "Cody", NA),
id=as.integer(c(10:12, NA)),
rate=c(1:3 * pi, NA), stringsAsFactors=FALSE)
testSimpleBindPositional <- function() {
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(?, ?, ?)"
sql <- paste("insert into t1 values", values)
dbBeginTransaction(db)
rs <- dbSendPreparedQuery(db, sql, bind.data=basicDf)
dbClearResult(rs)
dbCommit(db)
got <- dbGetQuery(db, "select * from t1")
checkEquals(basicDf, got)
}
testSimpleBindNamed <- function() {
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(:name, :id, :rate)"
sql <- paste("insert into t1 values", values)
rs <- dbSendPreparedQuery(db, sql, bind.data=basicDf)
dbClearResult(rs)
got <- dbGetQuery(db, "select * from t1")
checkEquals(basicDf, got)
}
testBindNamedMissing <- function() {
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(:name, :id, :rate)"
sql <- paste("insert into t1 values", values)
colnames(basicDf)[2] <- "garbled"
Got <- tryCatch({
dbSendPreparedQuery(db, sql, bind.data=basicDf)
FALSE
},
error = function(e) {
checkTrue(grepl("unable to bind data for parameter",
conditionMessage(e)))
TRUE
})
checkTrue(Got) # verify exception
}
testBindNamedReordered <- function() {
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(:name, :id, :rate)"
sql <- paste("insert into t1 values", values)
newOrd <- c("id", "rate", "name")
basicDf <- basicDf[ , newOrd]
rs <- dbSendPreparedQuery(db, sql, bind.data=basicDf)
dbClearResult(rs)
got <- dbGetQuery(db, "select * from t1")
checkEquals(basicDf, got[ , newOrd])
}
testBindNamedReorderExtraCols <- function() {
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(:name, :id, :rate)"
sql <- paste("insert into t1 values", values)
basicDf$foo <- 1:1
basicDf$bar <- 0:0
basicDf$baz <- "a"
newOrd <- c("foo", "id", "bar", "rate", "name", "baz")
basicDf <- basicDf[ , newOrd]
## This raises the following error:
## Error in sqliteExecStatement(conn, statement, bind.data, ...) :
## RS-DBI driver: (attempted to re-bind column [name] to positional
## parameter 1)
rs <- dbSendPreparedQuery(db, sql, bind.data=basicDf)
dbClearResult(rs)
got <- dbGetQuery(db, "select * from t1")
checkEquals(basicDf[ , c("name", "id", "rate")], got)
}
test_bind_data_has_zero_dim <- function()
{
db <- DATA$db
dbGetQuery(db, basicTableSql)
values <- "(:name, :id, :rate)"
sql <- paste("insert into t1 values", values)
df <- basicDf[0, ]
checkException(dbSendPreparedQuery(db, sql, bind.data = df))
}
bind_select_setup <- function(db) {
df <- data.frame(id = letters[1:5],
score = 1:5,
size = c(1L, 1L, 2L, 2L, 3L),
stringsAsFactors = FALSE)
dbWriteTable(db, "t1", df, row.names = FALSE)
df
}
test_bind_select_one_per <- function()
{
db <- DATA$db
df <- bind_select_setup(db)
q <- "select * from t1 where id = ?"
got <- dbGetPreparedQuery(db, q, data.frame(id = c("e", "a", "c")))
checkEquals(c("e", "a", "c"), got$id)
checkEquals(c(5L, 1L, 3L), got$score)
res <- dbSendPreparedQuery(db, q, data.frame(id = c("e", "a", "c")))
checkEquals("e", fetch(res, n = 1)[["id"]])
checkEquals("a", fetch(res, n = 1)[["id"]])
checkEquals("c", fetch(res, n = 1)[["id"]])
checkEquals(0L, nrow(fetch(res, n = 1)))
checkTrue(dbGetInfo(res)$completed == 1L)
dbClearResult(res)
}
test_bind_select_no_matches <- function()
{
db <- DATA$db
df <- bind_select_setup(db)
q <- "select * from t1 where id = ?"
## no result 1
got <- dbGetPreparedQuery(db, q, data.frame(id = "X"))
checkEquals(c(0L, 3L), dim(got))
checkEquals(names(df), names(got))
## no result many
got <- dbGetPreparedQuery(db, q, data.frame(id = c("X", "Y", "Z")))
checkEquals(c(0L, 3L), dim(got))
checkEquals(names(df), names(got))
# no results when mixed in
got <- dbGetPreparedQuery(db, q,
data.frame(id = c("X", "b", "e", "Y", "a")))
checkEquals(c("b", "e", "a"), got$id)
}
test_bind_select_multi_match <- function()
{
db <- DATA$db
df <- bind_select_setup(db)
q <- "select * from t1 where size = ?"
got <- dbGetPreparedQuery(db, q,
data.frame(size=c(1L, 2L, 3L)))
checkEquals(df, got)
## with non-match
got <- dbGetPreparedQuery(db, q,
data.frame(size=c(1L, -100L, 2L, 3L)))
checkEquals(df, got)
## as result set using incremental fetch
res <- dbSendPreparedQuery(db, q,
data.frame(size=c(3L, 2L)))
checkEquals("e", fetch(res, n = 1L)[["id"]])
checkEquals("c", fetch(res, n = 1L)[["id"]])
checkEquals("d", fetch(res, n = 1L)[["id"]])
checkEquals(c(0L, 3L), dim(fetch(res, n = 1L)))
checkTrue(dbGetInfo(res)$completed == 1L)
}
test_bind_select_NA <- function()
{
db <- DATA$db
df <- bind_select_setup(db)
dbGetQuery(db, "insert into t1 values ('x', NULL, NULL)")
got <- dbGetPreparedQuery(db, "select id from t1 where score is :v",
data.frame(v=as.integer(NA)))
checkEquals(c(1L, 1L), dim(got))
checkEquals("x", got$id)
}
|
