我想按照这个答案在SQLite数据库一次插入多行:错误id_column
Is it possible to insert multiple rows at a time in an SQLite database?
这似乎很好地工作,以找出如何在sqlite3的数据库做多个插入,但我有一个问题:我的表有9列+通常的ID是“主键自动增量非空”...总共10列。
如果我使用上述主题中指出的语句,它只有在指定ID时才起作用。
如果我省略语句中的ID,它给我的错误“的SQLite错误表重量有10列,但9个值提供”
如果我做一个单一的插入和我省略,当然它给人的ID下一个默认值自动。
如何忽略此多重插入的ID?
我不知道这是否是相关的,但我在Windows CE上紧凑框架3.5编程6.
谢谢
'DATABASE WEIGHT COLUMNS NAME
Private Const DBWGTIdLotto = "IDLotto"
Private Const DBWGTProgressive = "ProgressiveNum"
Private Const DBWGTWeight = "Weight"
Private Const DBWGTTime = "theTime"
Private Const DBWGTStatusFlag = "StatusFlag"
Private Const DBWGTTot1 = "Tot1"
Private Const DBWGTTot2 = "Tot2"
Private Const DBWGTTot3 = "Tot3"
Private Const DBWGTPrice = "Price"
'CREATE THE DATABASE
Public Sub CreateDatabaseWeights()
Try
If Not File.Exists(Me.DatabasePesatePath) Then
'Crea la tabella
Dim sqlString As String = "CREATE TABLE " + DatabasePesateTableName + "(" _
+ "id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, " _
+ DBWGTIdLotto + " INTEGER NOT NULL, " _
+ DBWGTProgressive + " INTEGER NOT NULL, " _
+ DBWGTWeight + " INTEGER, " _
+ DBWGTTime + " TIMESTAMP, " _
+ DBWGTStatusFlag + " INTEGER, " _
+ DBWGTTot1 + " BOOLEAN, " _
+ DBWGTTot2 + " BOOLEAN, " _
+ DBWGTTot3 + " BOOLEAN, " _
+ DBWGTPrice + " REAL" _
+ ");"
Dim db As New SQLiteDatabase(Me.DatabasePesatePath)
db.ExecuteNonQuery(sqlString)
End If
Catch ex As Exception
AggiungiErrore("CLASS: RecordPeso => CreateDatabaseWeights: " + ex.Message)
End Try
End Sub
'SUB TO INSERT MULTIPLE RECORDS
Public Sub AggiungiPeso(ByVal lotto As Integer, ByVal progressive As Integer, ByVal weight As Integer, ByVal flag As Byte, ByVal tot1 As Boolean, ByVal tot2 As Boolean, ByVal tot3 As Boolean, ByVal price As Single)
Try
Dim test(100) As Dictionary(Of String, String)
For i As Integer = test.GetLowerBound(0) To test.GetUpperBound(0)
'Crea il dizionario con i valori
Dim data As New Dictionary(Of String, String)
data.Add("id", i.ToString) 'IF I REMOVE THIS, IT GIVES ERROR !!!!!!!!!!!!!!
data.Add(DBWGTIdLotto, lotto.ToString)
data.Add(DBWGTProgressive, progressive.ToString)
data.Add(DBWGTWeight, weight.ToString)
data.Add(DBWGTTime, Now.ToString)
data.Add(DBWGTStatusFlag, flag.ToString)
data.Add(DBWGTTot1, IIf(tot1, "1", "0"))
data.Add(DBWGTTot2, IIf(tot2, "1", "0"))
data.Add(DBWGTTot3, IIf(tot3, "1", "0"))
data.Add(DBWGTPrice, price.ToString)
test(i) = Data
Next
'Salva il nuovo peso
Dim db As New SQLiteDatabase(Me.DatabasePesatePath)
db.MultipleInsert(DatabasePesateTableName, test)
Catch ex As Exception
AggiungiErrore("CLASS: RecordPeso => AggiungiPeso: " + ex.Message)
End Try
End Sub
--------------- DATABASE CLASS --------------------
'Insert a row in the database
'<tableName> Nome della tabella
'<data()> Array di Dizionari con coppie di colonne/valori
'<return> Boolean per successo o fallimento
Public Function MultipleInsert(ByVal tableName As String, ByVal data() As Dictionary(Of String, String)) As Boolean
Dim vals As String = ""
Dim columns As String = ""
Dim returnCode As Boolean = True
Try
'Se abbiamo elementi
If data.Count >= 1 And data(0).Count >= 1 Then
Dim tmpQuery As String = String.Format("INSERT INTO {0} SELECT ", tableName)
'Creo la query per l'aggiornamento
For Each val As KeyValuePair(Of String, String) In data(0)
tmpQuery += String.Format("'{0}' AS '{1}', ", val.Value.ToString, val.Key.ToString)
Next
'Remove last useless comma
tmpQuery = tmpQuery.Substring(0, tmpQuery.Length - 2)
'Aggiorno tutti i valori degli altri dizionari
For i As Integer = data.GetLowerBound(0) + 1 To data.GetUpperBound(0)
'Contatore inizio riga
Dim j As Integer = 0
'Add value of other dictionaries
For Each Val As KeyValuePair(Of String, String) In data(i)
If j = 0 Then tmpQuery += " UNION SELECT"
tmpQuery += String.Format(" '{0}',", Val.Value.ToString)
j += 1
Next
tmpQuery = tmpQuery.Substring(0, tmpQuery.Length - 1)
j = 0
Next
'Aggiorna il DB
Me.ExecuteNonQuery(tmpQuery)
End If
Catch ex As Exception
AggiungiRigaSuFile(ErroriPath, "CLASS: SQLiteDatabase => MultipleInsert: " + ex.Message, True, True)
returnCode = False
End Try
Return returnCode
End Function
'Interact with database for purpose different from query
'<sqlString> SQL string for interacting in DB
'<return> Number of columns updated
Public Function ExecuteNonQuery(ByVal sqlString As String) As Integer
Dim rowsUpdated As Integer = 0
Try
'Definisco la connessione al database
Using cnn As New SQLiteConnection(dbConnection)
cnn.Open()
Dim cmd As New SQLiteCommand(cnn)
cmd.CommandText = sqlString
'Aggiorno i dati
rowsUpdated = cmd.ExecuteNonQuery
End Using
Catch ex As Exception
AggiungiRigaSuFile(ErroriPath, "CLASS: SQLiteDatabase => ExecuteNonQuery: " + ex.Message, True, True)
End Try
'Ritorna le righe elaborate
Return rowsUpdated
End Function
发布您的代码。 – dugas 2013-05-13 14:30:31
听起来很像你实际上没有在PK领域设置AUTOINCREMENT。 – ctacke 2013-05-13 15:24:46
在这里你是代码,我粘贴相关的子...希望在这个过程中没有犯过错误。 @ctacke:如果我没有自动增量...我怎么能做一个插入没有指定ID? – 2013-05-13 15:38:35