ADO Schemas to list tables & fields - ADO Source Code in ASP

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Home » ASP Home » ADO Home » ADO Schemas to list tables & fields

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Title	ADO Schemas to list tables & fields
Description	You can examine a Schema for the table names and column names and column detail information.
Category	ASP » ADO
Hits	365453
Code	Select and Copy the Code
<html><head> <TITLE>dbschemas.asp</TITLE> </head> <body bgcolor="#FFFFFF"> <!--#INCLUDE VIRTUAL="/ADOVBS.INC" --> <!--#INCLUDE VIRTUAL="/learn/test/lib_fieldtypes.asp" --> <% myDSN="DSN=Student;uid=student;pwd=magic" Set conntemp=Server.CreateObject("adodb.connection") conntemp.open myDSN Set rsSchema = conntemp.OpenSchema(adSchemaColumns) thistable="" pad=" " Do UNTIL rsSchema.EOF prevtable=thistable thistable=rsSchema("Table_Name") thiscolumn=rsSchema("COLUMN_NAME") If thistable<>prevtable Then Response.Write "Table=<b>" & thistable & "</b><br>" Response.Write "TABLE_CATALOG=<b>" & rsSchema("TABLE_CATALOG") & "</b><br>" Response.Write "TABLE_SCHEMA=<b>" & rsSchema("TABLE_SCHEMA") & "</b><p>" End If Response.Write "<br>" & pad & "Field=<b>" & thiscolumn & "</b><br>" Response.Write pad & "Type=<b>" & fieldtypename(rsSchema("DATA_TYPE")) & "</b><br>" Dim colschema(27) colschema(0)="TABLE_CATALOG" colschema(1)="TABLE_SCHEMA" colschema(2)="TABLE_NAME" colschema(3)="COLUMN_NAME" colschema(4)="COLUMN_GUID" colschema(5)="COLUMN_PROP_ID" colschema(6)="ORDINAL_POSITION" colschema(7)="COLUMN_HASDEFAULT" colschema(8)="COLUMN_DEFAULT" colschema(9)="COLUMN_FLAGS" colschema(10)="IS_NULLABLE" colschema(11)="DATA_TYPE" colschema(12)="TYPE_GUID" colschema(13)="CHARACTER_MAXIMUM_LENGTH" colschema(14)="CHARACTER_OCTET_LENGTH" colschema(15)="NUMERIC_PRECISION" colschema(16)="NUMERIC_SCALE" colschema(17)="DATETIME_PRECISION" colschema(18)="CHARACTER_SET_CATALOG" colschema(19)="CHARACTER_SET_SCHEMA" colschema(20)="CHARACTER_SET_NAME" colschema(21)="COLLATION_CATALOG" colschema(22)="COLLATION_SCHEMA" colschema(23)="COLLATION_NAME" colschema(24)="DOMAIN_NAME" colschema(25)="DOMAIN_CATALOG" colschema(26)="DOMAIN_SCHEMA" colschema(27)="DESCRIPTION" On Error Resume Next For counter=4 To 27 thisColInfoType=colschema(counter) thisColInfo=rsSchema(thisColInfoType) If Err.number<>0 Then thiscolinfo="-error-" Err.Clear End If If thisColInfo<>"" Then Response.Write pad & pad & pad & thiscolinfotype Response.Write "=<b>" & thiscolinfo & "</b><br>" End If Next Response.Flush rsSchema.MoveNext Loop rsSchema.Close Set rsSchema=Nothing conntemp.close Set conntemp=Nothing %> </body></html> Here Is the contents of lib_fieldtypes.asp which Is included To make this example work: <% Function fieldtypename(parm1) Select Case Parm1 Case 0 fieldtypename="adEmpty" Case 16 fieldtypename="adTinyInt" Case 2 fieldtypename="adSmallInt" Case 3 fieldtypename="adInteger" Case 20 fieldtypename="adBigInt" Case 17 fieldtypename="adUnsignedTinyInt" Case 18 fieldtypename="adUnsignedSmallInt" Case 19 fieldtypename="adUnsignedInt" Case 21 fieldtypename="adUnsignedBigInt" Case 4 fieldtypename="adSingle" Case 5 fieldtypename="adDouble" Case 6 fieldtypename="adCurrency" Case 14 fieldtypename="adDecimal" Case 131 fieldtypename="adNumeric" Case 11 fieldtypename="adBoolean" Case 10 fieldtypename="adError" Case 132 fieldtypename="adUserDefined" Case 12 fieldtypename="adVariant" Case 9 fieldtypename="adIDispatch" Case 13 fieldtypename="adIUnknown" Case 72 fieldtypename="adGUID" Case 7 fieldtypename="adDate" Case 133 fieldtypename="adDBDate" Case 134 fieldtypename="adDBTime" Case 135 fieldtypename="adDBTimeStamp" Case 8 fieldtypename="adBSTR" Case 129 fieldtypename="adChar" Case 200 fieldtypename="adVarChar" Case 201 fieldtypename="adLongVarChar" Case 130 fieldtypename="adWChar" Case 202 fieldtypename="adVarWChar" Case 203 fieldtypename="adLongVarWChar" Case 128 fieldtypename="adBinary" Case 204 fieldtypename="adVarBinary" Case 205 fieldtypename="adLongVarBinary" Case Else fieldtypename="Undefined by ADO" End Select End Function %>

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