Question : I need to get all the table names in a schema then retrieve field names , datatype ,precision etc

Then Load them to a table like TABLENAME|FIELDNAME|FIELDTYPE|PRECISON in a SQL Server table, I have heard of GetOleDbSchemaTable, but don't now where to start

Answer : I need to get all the table names in a schema then retrieve field names , datatype ,precision etc

To retrieve it in one query:
http://sqlquery-ebruoguzberk.blogspot.com/2009/10/tablodan-tablo-ismi-kolon-ismi-veritipi.html

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SELECT table_name=sysobjects.name,
column_name=syscolumns.name,
datatype=systypes.name,
length=syscolumns.length
FROM sysobjects 
JOIN syscolumns ON sysobjects.id = syscolumns.id
JOIN systypes ON syscolumns.xtype=systypes.xtype
WHERE sysobjects.xtype='U'
ORDER BY sysobjects.name,syscolumns.colid