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218 lines
7.4 KiB
218 lines
7.4 KiB
6 years ago
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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Testing System Data access\n",
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"\n",
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"Depending of Drivers some test will works, and other may not\n",
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"\n",
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"Drivers may be at: https://www.microsoft.com/fr-fr/download/details.aspx?id=13255"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# pyodbc \n",
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"import pyodbc\n",
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"\n",
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"# look for pyodbc providers\n",
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"sources = pyodbc.dataSources()\n",
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"dsns = list(sources.keys())\n",
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"sl = [' %s [%s]' % (dsn, sources[dsn]) for dsn in dsns]\n",
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"print(\"pyodbc Providers: (beware 32/64 bit driver and python version must match)\\n\", '\\n'.join(sl))\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# odbc to EXCEL .xls via pyodbc (beware 32/64 bit driver and pytho version must match)\n",
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"import pyodbc, os\n",
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"filename = os.path.join(os.getcwd(), 'test.xls')\n",
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"todo = \"select * from [Sheet1$]\"\n",
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"print(\"\\nusing pyodbc to read an Excel .xls file:\\n\\t\", filename)\n",
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"if os.path.exists(filename):\n",
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" CNXNSTRING = 'Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=%s;READONLY=FALSE' % filename\n",
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" cnxn = pyodbc.connect(CNXNSTRING, autocommit=True)\n",
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" cursor = cnxn.cursor()\n",
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" rows = cursor.execute(todo).fetchall()\n",
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" print([column[0] for column in cursor.description])\n",
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" print(rows)\n",
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" cursor.close()\n",
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" cnxn.close()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# odbc to ACCESS .mdb via pyodbc (beware 32/64 bit driver and python version must match)\n",
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"import pyodbc, os\n",
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"filename = os.path.join(os.getcwd(), 'test.mdb')\n",
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"print(\"\\nusing pyodbc to read an ACCESS .mdb file:\\n\\t\", filename)\n",
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"if os.path.exists(filename):\n",
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" CNXNSTRING = 'Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=%s;READONLY=FALSE' % filename\n",
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" cnxn = pyodbc.connect(CNXNSTRING, autocommit=False)\n",
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" cursor = cnxn.cursor()\n",
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" rows = cursor.execute(\"select * from users\").fetchall()\n",
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" print([column[0] for column in cursor.description])\n",
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" print(rows)\n",
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" cursor.close()\n",
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" cnxn.close()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# pythonnet\n",
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"import clr\n",
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"clr.AddReference(\"System.Data\")\n",
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"import System.Data.OleDb as ADONET\n",
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"import System.Data.Odbc as ODBCNET\n",
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"import System.Data.Common as DATACOM\n",
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"\n",
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"table = DATACOM.DbProviderFactories.GetFactoryClasses()\n",
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"print(\"\\n .NET Providers: (beware 32/64 bit driver and pytho version must match)\")\n",
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"for row in table.Rows:\n",
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" print(\" %s\" % row[table.Columns[0]])\n",
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" print(\" \",[row[column] for column in table.Columns if column != table.Columns[0]])"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# odbc to EXCEL .xls via pythonnet\n",
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"import clr, os\n",
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"clr.AddReference(\"System.Data\")\n",
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"import System.Data.OleDb as ADONET\n",
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"import System.Data.Odbc as ODBCNET\n",
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"import System.Data.Common as DATACOM\n",
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"\n",
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"filename = os.path.join(os.getcwd(), 'test.xls')\n",
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"todo = \"select * from [Sheet1$]\"\n",
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"print(\"\\nusing pythonnet to read an excel .xls file:\\n\\t\", filename , \"\\n\\t\", todo)\n",
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"if os.path.exists(filename):\n",
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" CNXNSTRING = 'Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=%s;READONLY=FALSE' % filename\n",
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" cnxn = ODBCNET.OdbcConnection(CNXNSTRING)\n",
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" cnxn.Open()\n",
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" command = cnxn.CreateCommand()\n",
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" command.CommandText = \"select * from [Sheet1$]\"\n",
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" rows = command.ExecuteReader()\n",
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" print ([rows.GetName(i) for i in range(rows.FieldCount)])\n",
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" for row in rows:\n",
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" print([row[i] for i in range(rows.FieldCount)])\n",
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" command.Dispose()\n",
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" cnxn.Close()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# odbc to ACCESS .mdb via pythonnet\n",
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"import clr, os\n",
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"clr.AddReference(\"System.Data\")\n",
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"import System.Data.OleDb as ADONET\n",
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"import System.Data.Odbc as ODBCNET\n",
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"import System.Data.Common as DATACOM\n",
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"\n",
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"filename = os.path.join(os.getcwd(), 'test.mdb')\n",
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"todo = \"select * from users\"\n",
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"print(\"\\nusing odbc via pythonnet to read an ACCESS .mdb file:\\n\\t\", filename , \"\\n\\t\", todo)\n",
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"\n",
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"if os.path.exists(filename):\n",
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" CNXNSTRING = 'Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=%s;READONLY=FALSE' % filename\n",
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" cnxn = ODBCNET.OdbcConnection(CNXNSTRING)\n",
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" cnxn.Open()\n",
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" command = cnxn.CreateCommand()\n",
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" command.CommandText = \"select * from users\"\n",
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" rows = command.ExecuteReader()\n",
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" print ([rows.GetName(i) for i in range(rows.FieldCount)])\n",
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" for row in rows:\n",
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" print([row[i] for i in range(rows.FieldCount)])\n",
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" command.Dispose()\n",
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" cnxn.Close()\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"# DAO via pythonnet: works ONLY if you have the 32 (or 64 bit) driver.\n",
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"import clr, os\n",
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"clr.AddReference(\"System.Data\")\n",
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"import System.Data.OleDb as ADONET\n",
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"import System.Data.Odbc as ODBCNET\n",
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"import System.Data.Common as DATACOM\n",
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"\n",
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"filename = os.path.join(os.getcwd(), 'test.accdb')\n",
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"todo = \"select * from users\"\n",
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"print(\"\\nusing DAO via pythonnet to read an ACCESS .mdb file:\\n\\t\", filename , \"\\n\\t\", todo)\n",
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"if os.path.exists(filename):\n",
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" # needs a driver in 32 or 64 bit like your running python\n",
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" # https://www.microsoft.com/download/details.aspx?id=13255\n",
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" CNXNSTRING = 'Provider=Microsoft.ACE.OLEDB.12.0; Data Source=%s;READONLY=FALSE' % filename\n",
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" cnxn = ADONET.OleDbConnection(CNXNSTRING)\n",
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" cnxn.Open()\n",
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" command = cnxn.CreateCommand()\n",
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" command.CommandText = todo\n",
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" # command.CommandText = 'select id, name from people where group_id = @group_id'\n",
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" # command.Parameters.Add(SqlParameter('group_id', 23))\n",
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" rows = command.ExecuteReader()\n",
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" print ([rows.GetName(i) for i in range(rows.FieldCount)])\n",
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" for row in rows:\n",
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" print([row[i] for i in range(rows.FieldCount)])\n",
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" command.Dispose()\n",
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" cnxn.Close()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.6.2"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 1
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}
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