mssql2mysql

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' this program converts Microsoft SQL Server databases to MySQL databases

' (c) 2001-2005 Michael Kofler' http://www.kofler.cc/mysql' mssql2mysql-at-kofler.cc

' LICENSE: GPL (Gnu Public License)

' VERSION: 0.12 (Mar 31st 2005)'' HISTORY:' 0.01 (Jan. 18 2001): initial version' 0.02 (June 23 2001): better handling of decimal numbers' by <dave.whitla-at-ocean.net.au>' 0.03 (August 7 2001): compatibility with Office 97' by <DaveMeaker-at-angelshade.com>' (uncomment Replace function at the end of the script!)' 0.04 (September 30 2001): slightly faster (ideas by' janivar-at-acos.no)' 0.05 (April 8 2002): compatible with MyODBC 3.51

' (set variable MyODBCVersion accordingly!)' thanks to Silvio Iaccarino' 0.05a (October 17 2002): support for BIGINT' thanks to Ugo Gioia' 0.06 (December 18 2002): support for adBinary (thanks to Roberto Alicata)' changed handling of TIMESTAMP (Michael Kofler):' TIMESTAMP (MSSQL) --> TINYBLOB (MySQL)' 0.07 (Jan. 27th 2003): support no-standard ports for MySQL' 0.08 (Apr. 30th 2003): Boolean now converts to 1/0 instead of -1/0' for True/False (Michael Kofler)' 0.09 (Aug. 19th 2003): better GUID conversion (Hermann Wiesner)' 0.10 (Nov. 12th 2003): better handling of table and field names' in function MySQLName (Carlo)

' 0.11 (Mar. 2nd 2005): needs MySQL 4.1 or higher!' new functions: - supports myisam and innodb tables' - per default all text columns are now created with character' set utf8and collation utf8_general_ci; you may choose another' charset + collation (constants CHARSET and COLLATION)' 0.12 (Mar. 31st 2005): ignores hypothetical indexes (thanks to Brian K. Andersen)

' USEAGE:' 1) copy this code into a new VBA 6 module

' (i.e. start Excel 2000 or Word 2000 or another' program with VBA editor, hit Alt+F11, execute' InsertModule, insert code)' OR copy code into an empty form of a new VB6 project'' 2) change the constants at the beginning of the code,' 3) hit F5 and execute Main()' the program now connects to Microsoft SQL Server' and converts the database; the resulting SQL commands' are either saved in an ASCII file or executed immediately

' FUNCTION:' converts both schema (tables and indices) and

' data (numbers, strings, dates etc.)' handles table and column names which are not legal in MySQL (see MySQLName())



' LIMITATIONS:' no foreign keys' no SPs, no triggers (MSSQL syntax incompatible to MySQL)' no views' no user defined data types (not yet supported by MySQL)' AUTO_INCREMENTs: MySQL does not support tables with more' than one AUTO_INCREMENT column; the AUTO_INCREMENT column

' must also be a key column; the converter does not check this,' so use MSSQL to add an index to the AUTO_INCREMENT column' before starting the conversion' no privileges/access infos (the idea of logins/users in M$ SQL Server' is incompatible with user/group/database/table/column' privileges of MySQL)' cannot handle ADO type adFileTime yet' GUIDs not tested' fairly slow and no visible feedback during conversion process' for example, it takes 80 seconds to convert Northwind (2.8 MB data)' with M$SQL running on PII 350 (CPU=0) and this script running in' Excel 2000 on PII 400 (CPU=100); unfortunately, compiling the program

' with VB6 does not make it any faster' tip: test with MAX_RECORDS = 10 first to see if it works for you at all

' INTERNALS:' method: read database schema using DMO' read data using a ADO recordset

' NECESSARY LIBRARIES:' ADODB (tested with 2.8, should also run with all versions >=2.1)' Connector/ODBC (testet with 3.51.11, should also run with older versions;' if you use MySQL server >= 4.1,' you MUST use Connector/ODBC >= 3.51.10!!!)' SQLDMO (tested with the version provided by M$ SQL Server 2000)

' SCRIPTING

Option ExplicitOption Compare Text

' -------------- change these constants before use!

'M$ SQL ServerConst MSSQL_SECURE_LOGIN = True 'login type (True for NT security)Const MSSQL_LOGIN_NAME = "" 'login name (for NT security use "" here)Const MSSQL_PASSWORD = "" 'password (for NT security use "" here)Const MSSQL_HOST = "(local)" 'hostname of M$ SQL Server; if localhost: use"(local)"Const MSSQL_DB_NAME = "Northwind" 'database name

Const OUTPUT_TO_FILE = 0 '1 --> write file (latin1 encoding);'0 --> connect to MySQL, execute SQL commands

directly

'output file (only needed if OUTPUT_TO_FILE=1)Const OUTPUT_FILENAME = "c:\export.sql"

'connect to MySQL (only needed if OUTPUT_TO_FILE=0)Const MYSQL_USER_NAME = "root" 'login name

Const MYSQL_PASSWORD = "uranus" 'passwordConst MYSQL_HOST = "192.168.80.128" 'if localhost: use "localhost"Const MYSQL_PORT = 3306 'change if you use another port



Const MyODBCVersion = "MySQL ODBC 3.51 Driver"'for MyODBC 2.51.* use "MySQL"

Const NEW_DB_NAME = "" 'name of new MySQL database ("" if same as M$SQL db name)

'conversion optionsConst DROP_DATABASE = True 'begin with DROP dbname?

Const MAX_RECORDS = 0 'max. nr of records per table (0 for all records, n for testing purposes)Const VARCHAR_MAX = 255 'max. nr of characters in VARCHAR

'255 for MySQL <=5.0.2'ca. 32000 for MySQL >= 5.0.3 (depends on char

. set, max. 65535 bytes)Const TABLE_ENGINE = "InnoDB" 'MyISAM or InnoDBConst CHARSET = "utf8" 'character set for all text columnsConst COLLATION = "" 'collation; leave empty if you want to use thedefault collation for

'the specified character set

' ----------------------------- don't change below here (unless you know what you are doing)

Const SQLDMOIndex_DRIPrimaryKey = 2048Const SQLDMOIndex_Unique = 2Const adEmpty = 0Const adTinyInt = 16Const adSmallInt = 2Const adInteger = 3Const adBigInt = 20Const adUnsignedTinyInt = 17Const adUnsignedSmallInt = 18Const adUnsignedInt = 19

Const adUnsignedBigInt = 21Const adSingle = 4Const adDouble = 5Const adCurrency = 6Const adDecimal = 14Const adNumeric = 131Const adBoolean = 11Const adError = 10Const adUserDefined = 132Const adVariant = 12Const adIDispatch = 9Const adIUnknown = 13Const adGUID = 72Const adDate = 7Const adDBDate = 133Const adDBTime = 134Const adDBTimeStamp = 135Const adBSTR = 8Const adChar = 129Const adVarChar = 200Const adLongVarChar = 201Const adWChar = 130Const adVarWChar = 202Const adLongVarWChar = 203Const adBinary = 128

Const adVarBinary = 204Const adLongVarBinary = 205Const adChapter = 136



Const adFileTime = 64Const adPropVariant = 138Const adVarNumeric = 139Const adArray = &H2000

Public dmoApplic 'As New SQLDMO.Application 'SQLDMO Application objectPublic dmoSrv 'As New SQLDMO.SQLServer 'SQLDMO Server object

Public mssqlConn 'As New Connection 'ADO Connection to M$ SQL ServerPublic mysqlConn 'As New Connection 'ADO Connection to MySQLPublic fso 'As Scripting.FileSystemObjectPublic fileout 'AS FSO.TextStream

Public Sub Main()Set dmoApplic = CreateObject("SQLDMO.Application")Set dmoSrv = CreateObject("SQLDMO.SQLServer")Set mssqlConn = CreateObject("ADODB.Connection")Set mysqlConn = CreateObject("ADODB.Connection")Set fso = CreateObject("Scripting.FileSystemObject")ConnectToDatabases

ConvertDatabaseMsgBox "done"End Sub

' connect to M$ SQL Server and MySQLPrivate Sub ConnectToDatabases()dmoSrv.LoginTimeout = 10On Error Resume Next

' DMO connection to M$ SQL ServerIf MSSQL_SECURE_LOGIN ThendmoSrv.LoginSecure = TruedmoSrv.Connect MSSQL_HOST

ElsedmoSrv.LoginSecure = FalsedmoSrv.Connect MSSQL_HOST, MSSQL_LOGIN_NAME, MSSQL_PASSWORD

End IfIf Err ThenMsgBox "Sorry, cannot connect to M$ SQL Server. " & _ "Please edit the MSSQL constats at the beginning " & _ "of the code." & vbCrLf & vbCrLf & Error

EndEnd If

' ADO connection to M$ SQL ServerDim tmpCStr$tmpCStr = _ "Provider=SQLOLEDB;" & _ "Data Source=" & MSSQL_HOST & ";" & _ "Initial Catalog=" & MSSQL_DB_NAME & ";"

If MSSQL_SECURE_LOGIN ThentmpCStr = tmpCStr & "Integrated Security=SSPI"

ElsetmpCStr = tmpCStr & _ "User ID=" & MSSQL_LOGIN_NAME & ";" & _ "Password=" & MSSQL_PASSWORD

End IfmssqlConn.ConnectionString = tmpCStr

mssqlConn.OpenIf Err ThenMsgBox "Sorry, cannot connect to M$ SQL Server. " & _



"Please edit the MSSQL constats at the beginning " & _ "of the code." & vbCrLf & vbCrLf & Error

EndEnd If

' ADO connection to MySQL or open output fileIf (OUTPUT_TO_FILE = 0) Then

mysqlConn.ConnectionString = _ "Provider=MSDASQL;" & _ "Driver=" & MyODBCVersion & ";" & _ "Server=" & MYSQL_HOST & ";" & _ "UID=" & MYSQL_USER_NAME & ";" & _ "PWD=" & MYSQL_PASSWORD & ";" & _ "Port=" & MYSQL_PORT

mysqlConn.OpenIf Err ThenMsgBox "Sorry, cannot connect to MySQL. " & _ "Please edit the MYSQL constats at the beginning " & _ "of the code." & vbCrLf & vbCrLf & Error

EndEnd IfElseSet fileout = fso.CreateTextFile(OUTPUT_FILENAME, Overwrite:=True)

End IfEnd Sub

Private Sub ConvertDatabase()' copy database schemaDim dmoDB 'As SQLDMO.DatabaseSet dmoDB = dmoSrv.Databases(MSSQL_DB_NAME)DBDefinition dmoDB' copy data

CopyDB dmoDBEnd Sub

' build SQL code to define one column' ColDefinition$(col As SQLDMO.Column)Function ColDefinition$(col)Dim cdef$cdef = MySQLName(col.Name) & " " & DataType(col)If col.Default <> "" Thencdef = cdef & " DEFAULT " & col.Default

End IfIf col.AllowNulls Thencdef = cdef & " NULL"

Elsecdef = cdef & " NOT NULL"

End IfIf col.Identity Thencdef = cdef & " AUTO_INCREMENT"

End IfColDefinition = cdef

End Function

' datatype transition M$ SQL Server --> MySQL' DataType$(col As SQLDMO.Column)Function DataType$(col)

Dim oldtype$, length&, precision&, scal&Dim newtype$



oldtype = col.PhysicalDatatypelength = col.lengthprecision = col.NumericPrecisionscal = col.NumericScaleIf LCase(oldtype) = "money" Thenprecision = 19scal = 4

ElseIf LCase(oldtype) = "smallmoney" Thenprecision = 10scal = 4

End If Select Case LCase(oldtype)

' integersCase "bit", "tinyint"newtype = "TINYINT"

Case "smallint"newtype = "SMALLINT"

Case "int"newtype = "INT"Case "bigint"newtype = "BIGINT"

' floating pointsCase "float"newtype = "DOUBLE"

Case "real"newtype = "FLOAT"

Case "decimal", "numeric", "money", "smallmoney"newtype = "DECIMAL(" & precision & ", " & scal & ")"

' stringsCase "char", "nchar"If length < 255 Thennewtype = "CHAR(" & length & ")"

Elsenewtype = "TEXT"

End IfCase "varchar", "nvarchar"If length < VARCHAR_MAX Thennewtype = "VARCHAR(" & length & ")"

Elsenewtype = "TEXT"

End IfCase "text", "ntext"newtype = "LONGTEXT"

' date/timeCase "datetime", "smalldatetime"newtype = "DATETIME"

Case "timestamp"newtype = "TINYBLOB"

' binary and otherCase "uniqueidentifier"newtype = "TINYBLOB"

Case "binary", "varbinary"newtype = "BLOB"

Case "image"



newtype = "LONGBLOB" Case Else' unknown data type, not supportedStop

End Select

DataType = newtypeEnd Function

' IndexDefinition$(tbl As SQLDMO.Table, idx As SQLDMO.Index)Function IndexDefinition$(tbl, idx)Dim i&Dim tmp$Dim col 'As SQLDMO.Column' don't deal with system indices (used i.e. to ensure ref. integr.)If Left$(idx.Name, 1) = "_" Or Left$(idx.Name, 5) = "hind_" Then Exit Function' index type (very incomplete !!!)If idx.Type And SQLDMOIndex_DRIPrimaryKey Then

tmp = tmp & "PRIMARY KEY"ElseIf idx.Type And SQLDMOIndex_Unique Thentmp = tmp & "UNIQUE " & MySQLName(idx.Name)

Elsetmp = tmp & "INDEX " & MySQLName(idx.Name)

End If' index columnstmp = tmp & "("For i = 1 To idx.ListIndexedColumns.CountSet col = idx.ListIndexedColumns(i)tmp = tmp & MySQLName(col.Name)' specify index lengthIf Right$(DataType(col), 4) = "BLOB" Or Right$(DataType(col), 4) = "TEXT" Th

entmp = tmp & "(" & IIf(col.length < 255, col.length, 255) & ")"

End If' seperate, if more than one index columnIf i < idx.ListIndexedColumns.Count Then tmp = tmp & ","

Nexttmp = tmp & ")"IndexDefinition = tmp

End Function

' build SQL code to define one table' TableDefinition$(tbl As SQLDMO.Table)Function TableDefinition$(tbl)Dim i&Dim tmp$, ixdef$' tabletmp = "CREATE TABLE " & _

NewDBName(tbl.Parent) & "." & MySQLName(tbl.Name) & vbCrLf & "("For i = 1 To tbl.Columns.Counttmp = tmp & ColDefinition(tbl.Columns(i))If i < tbl.Columns.Count Thentmp = tmp & ", " & vbCrLf

End IfNext' indices

For i = 1 To tbl.Indexes.Countixdef = IndexDefinition(tbl, tbl.Indexes(i))If ixdef <> "" Then



tmp = tmp & ", " & vbCrLf & ixdefEnd If

Nexttmp = tmp & ")"' enginetmp = tmp & " ENGINE " & TABLE_ENGINE' characterset

tmp = tmp & " CHARACTER SET " & CHARSET' collationIf COLLATION <> "" Thentmp = tmp & " COLLATION " & COLLATION

End IfTableDefinition = tmp

End Function

' build SQL code to define database (all tables)' DBDefinition(db As SQLDMO.Database)Sub DBDefinition(db)Dim i&

Dim sql, dbname$dbname = NewDBName(db)If DROP_DATABASE Thensql = "DROP DATABASE IF EXISTS " & dbnameExecuteSQL sql

End Ifsql = "CREATE DATABASE " & dbnameExecuteSQL sqlFor i = 1 To db.Tables.CountIf Not db.Tables(i).SystemObject Thensql = TableDefinition(db.Tables(i))ExecuteSQL sql

End If

NextEnd Sub

' copy content of all M$ SQL Server tables to new MySQL database' CopyDB(msdb As SQLDMO.Database)Sub CopyDB(msdb)Dim i&Dim tmp$ExecuteSQL "USE " & NewDBName(msdb)For i = 1 To msdb.Tables.CountIf Not msdb.Tables(i).SystemObject ThenCopyTable msdb.Tables(i)

End IfNext

End Sub

' copy content of one table from M$ SQL Server to MySQL' CopyTable(mstable As SQLDMO.Table)Sub CopyTable(mstable)Dim rec ' As RecordsetDim sqlInsert$, sqlValues$Dim i&, recordCounter&Set rec = CreateObject("ADODB.Recordset")rec.Open "SELECT * FROM [" & mstable.Name & "]", mssqlConn' build beginning statement of SQL INSERT command

' for example: INSERT INTO tablename (column1, column2)sqlInsert = "INSERT INTO " & MySQLName(mstable.Name) & " ("For i = 0 To rec.Fields.Count - 1



sqlInsert = sqlInsert & MySQLName(rec.Fields(i).Name)If i <> rec.Fields.Count - 1 ThensqlInsert = sqlInsert & ", "

End IfNextsqlInsert = sqlInsert & ") "' for each recordset in M$SS table: build sql statement

Do While Not rec.EOFsqlValues = ""For i = 0 To rec.Fields.Count - 1sqlValues = sqlValues & DataValue(rec.Fields(i))If i <> rec.Fields.Count - 1 ThensqlValues = sqlValues & ", "

End IfNextExecuteSQL sqlInsert & " VALUES(" & sqlValues & ")"rec.MoveNext' counterrecordCounter = recordCounter + 1

If MAX_RECORDS <> 0 ThenIf recordCounter >= MAX_RECORDS Then Exit DoEnd If

LoopEnd Sub

' data transition M$ SQL Server --> MySQL' DataValue$(fld As ADO.Field)Function DataValue$(fld)If IsNull(fld.Value) ThenDataValue = "NULL"

Else

Select Case fld.Type

' integer numbersCase adBigInt, adInteger, adSmallInt, adTinyInt, adUnsignedBigInt, adUnsigne

dInt, adUnsignedSmallInt, adUnsignedTinyIntDataValue = fld.Value

' decimal numbersCase adCurrency, adDecimal, adDouble, adNumeric, adSingle, adVarNumericDataValue = Str(fld.Value)If Not InStr(DataValue, ".") > 0 ThenDataValue = DataValue & ".0"

End If

' booleanCase adBooleanDataValue = IIf(fld.Value, 1, 0)

' date, timeCase adDate, adDBDate, adDBTimeDataValue = Format(fld.Value, "'yyyy-mm-dd Hh:Nn:Ss'")

Case adDBTimeStampDataValue = Format(fld.Value, "yyyymmddHhNnSs")

Case adFileTime' todo

BeepStop



' stringsCase adBSTR, adChar, adLongVarChar, adVarChar, adLongVarWChar, adVarWChar, a

dWCharDataValue = "'" & Quote(fld.Value) & "'"

' binary and otherCase adGUID

DataValue = HexCodeGUID(fld.Value)Case adLongVarBinary, adVarBinaryDataValue = HexCode(fld.Value)

End Select

End IfEnd Function

' converts a Byte-array into a hex string' HexCode$(bytedata() As Byte)Function HexCode(bytedata)Dim i&

Dim tmp$tmp = ""For i = LBound(bytedata) To UBound(bytedata)If bytedata(i) <= 15 Thentmp = tmp + "0" + Hex(bytedata(i))

Elsetmp = tmp + Hex(bytedata(i))

End IfNextHexCode = "0x" + tmp

End Function

' converts a String into a hex string

' HexCode$(bytedata() As Byte)Function HexCodeStr(bytedata)Dim i&, b&Dim tmp$tmp = ""For i = 1 To LenB(bytedata)b = AscB(MidB(bytedata, i, 1))If b <= 15 Thentmp = tmp + "0" + Hex(b)

Elsetmp = tmp + Hex(b)

End IfNextHexCodeStr = "0x" + tmp

End Function

' returns name of new database' NewDBName$(db As SQLDMO.Database)Function NewDBName$(db)If NEW_DB_NAME = "" ThenNewDBName = db.Name

ElseNewDBName = NEW_DB_NAME

End IfEnd Function

' quote ' " and \; replace chr(0) by \0Function Quote(tmp)



tmp = Replace(tmp, "\", "\\")tmp = Replace(tmp, """", "\""")tmp = Replace(tmp, "'", "\'")Quote = Replace(tmp, Chr(0), "\0")

End Function

' to translate MSSQL names to legal MySQL names

' replace blank, -, ( and ) by '_'Function MySQLName(tmp)tmp = Replace(tmp, " ", "_")tmp = Replace(tmp, "-", "_")tmp = Replace(tmp, "(", "_")MySQLName = "`" & Replace(tmp, ")", "_") & "`"

End Function

' either execute SQL command or write it into fileFunction ExecuteSQL(sql)If OUTPUT_TO_FILE Thenfileout.WriteLine sql & ";"

If Left$(sql, 6) <> "INSERT" Thenfileout.WriteLineEnd If

ElsemysqlConn.Execute sql

End IfEnd Function

' this event procedures starts the converter if it is run as a VB6 programmPrivate Sub Form_Load()MainEnd

End Sub

' converts a GUID string into a hex string without formatFunction HexCodeGUID(bytedata)Dim tmp$If Len(bytedata) = 38 Thentmp = Mid(bytedata, 2, 8) + Mid(bytedata, 11, 4) + Mid(bytedata, 16, 4) _

+ Mid(bytedata, 21, 4) + Mid(bytedata, 26, 12)Elsetmp = "00"

End IfHexCodeGUID = "0x" + tmp

End Function

' uncomment the following lines if you are using Office 97,' which does not have the Replace function include; please' note that this Replace function is much slower than the' built-in version in Office 2000/VB6'' to replace all occurrences of a string within a string' Function Replace(tmp, fromStr, toStr)' Dim leftOff&' Dim pos&' leftOff = 1' Do While InStr$(leftOff, tmp, fromStr) > 0

' pos = InStr$(leftOff, tmp, fromStr)' tmp = Left$(tmp, pos - 1) + toStr + Mid$(tmp, pos + Len(fromStr), Len(tmp))



' leftOff = pos + Len(fromStr) + 1' Loop' Replace = tmp' End Function

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