SELECT
OBJECT_NAME(c.OBJECT_ID) TableName
,c.name AS ColumnName
,SCHEMA_NAME(t.schema_id) AS SchemaName
,t.name AS TypeName
,t.is_user_defined
,t.is_assembly_type
,c.max_length
,c.PRECISION
,c.scale
FROM sys.columns AS c
JOIN sys.types AS t ON c.user_type_id=t.user_type_id
WHERE t.name = ‘varchar’ and c.max_length = 40
ORDER BY c.OBJECT_ID

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All fields in a SQL Server Database with the same data type

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