Obtains whether all columns in the database and whether the column type is null, whether the default value is a primary key, and whether the default value of the database is

Obtains whether all columns in the database and whether the column type is null, whether the default value is a primary key, and whether the default value of the database is

Read the summary of the stored procedures of SQL Server

SELECT DISTINCT c.name AS tablename, a.name,a.is_nullable,dbo.GetRemoveParentheses(d.text) AS defaultvalue,CASE WHEN (a.name = index_col (c.name, f.index_id,  1) or         a.name = index_col (c.name, f.index_id,  2) or         a.name = index_col (c.name, f.index_id,  3) or         a.name = index_col (c.name, f.index_id,  4) or         a.name = index_col (c.name, f.index_id,  5) or         a.name = index_col (c.name, f.index_id,  6) or         a.name = index_col (c.name, f.index_id,  7) or         a.name = index_col (c.name, f.index_id,  8) or         a.name = index_col (c.name, f.index_id,  9) or         a.name = index_col (c.name, f.index_id, 10) or         a.name = index_col (c.name, f.index_id, 11) or         a.name = index_col (c.name, f.index_id, 12) or         a.name = index_col (c.name, f.index_id, 13) or         a.name = index_col (c.name, f.index_id, 14) or         a.name = index_col (c.name, f.index_id, 15) or         a.name = index_col (c.name, f.index_id, 16)) THEN 1 ELSE 0 END AS isPrimary ,        CASE a.precision          WHEN 0          THEN CASE a.is_ansi_padded                 WHEN 1                 THEN CONVERT(NVARCHAR(15), b.name + '('                      + CONVERT(NVARCHAR(10), a.max_length) + ')')                 WHEN 0 THEN b.name               END          ELSE CASE a.scale                 WHEN 0 THEN b.name                 ELSE b.name + '(' + CONVERT(NVARCHAR(10), a.precision) + ','                      + CONVERT(NVARCHAR(10), a.scale) + ')'               END        END AS typelength FROM  sys.columns a        LEFT JOIN sys.types b ON a.system_type_id = b.system_type_id                                 AND a.user_type_id = b.user_type_idINNER JOIN sysobjects c ON c.id = a.object_idLEFT JOIN syscomments d ON d.id = a.default_object_idINNER JOIN sys.key_constraints e ON e.parent_object_id = a.object_idINNER JOIN sys.indexes f ON e.unique_index_id = f.index_idWHERE c.xtype = 'u' AND f.is_primary_key = 1