尝试类似这样的操作。这会生成一些可以运行的SQL来添加缺少的默认值。所以运行这个,然后获取输出并运行它以实际添加默认值。此外,您可能想调整我在CASE中设置的默认值:
SELECT
'ALTER TABLE '+c.TABLE_CATALOG+'.'+c.TABLE_SCHEMA+'.'+c.TABLE_NAME
+' ADD CONSTRAINT DF_'+c.TABLE_NAME+'_'+c.COLUMN_NAME+'_'+CONVERT(varchar(5),c.ORDINAL_POSITION)
+' DEFAULT '
+CASE c.DATA_TYPE
WHEN 'money' THEN '0.0'
WHEN 'int' THEN '0'
WHEN 'text' THEN ''''''
WHEN 'smallint' THEN '0'
WHEN 'datetime' THEN 'GETDATE()'
WHEN 'varchar' THEN ''''''
WHEN 'numeric' THEN '0'
WHEN 'tinyint' THEN '0'
WHEN 'smalldatetime' THEN 'GETDATE()'
WHEN 'float' THEN '0.0'
WHEN 'char' THEN ''''''
WHEN 'bigint' THEN '0'
WHEN 'bit' THEN '0'
WHEN 'nvarchar' THEN ''''''
END
+' FOR '+c.COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS c
WHERE c.COLUMN_DEFAULT IS NULL AND IS_NULLABLE='NO'
AND c.DATA_TYPE NOT IN ('image','varbinary','binary')