41 lines
2.0 KiB
SQL
41 lines
2.0 KiB
SQL
--同步重阅申请表结构后，再维护该字段
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UPDATE VisitTaskReReading
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SET TrialId = VisitTask.TrialId
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FROM VisitTaskReReading
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INNER JOIN VisitTask ON VisitTaskReReading.OriginalReReadingTaskId = VisitTask.Id;
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delete VisitTaskReReading where TrialId is NULL
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--数据库列字符串列 长度
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SELECT t.name AS table_name, c.name AS column_name, d.name AS constraint_name , ty.Name as typeName, c.max_length as length
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FROM sys.tables t
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INNER JOIN sys.default_constraints d ON t.object_id = d.parent_object_id
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INNER JOIN sys.columns c ON d.parent_column_id = c.column_id AND c.object_id = t.object_id
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INNER JOIN sys.types ty on ty.system_type_id = c.system_type_id
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AND ty.name in ('nvarchar', 'varchar', 'char', 'nchar')
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--带维护sql 的查询
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SELECT t.name AS table_name, c.name AS column_name, d.name AS constraint_name , ty.Name as typeName, c.max_length as length,
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'ALTER TABLE [' + t.name + '] DROP CONSTRAINT [' + d.name + ']' AS drop_constraint_sql,
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CASE WHEN c.is_nullable = 1 THEN
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'ALTER TABLE [' + OBJECT_NAME(c.object_id) + '] ALTER COLUMN ' + QUOTENAME(c.name) +
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CASE WHEN c.max_length < 100 THEN ' NVARCHAR(100)' ELSE ' NVARCHAR('+ CONCAT('', c.max_length)+')' END + ' NULL'
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ELSE
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'ALTER TABLE [' + OBJECT_NAME(c.object_id) + '] ALTER COLUMN ' + QUOTENAME(c.name) +
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CASE WHEN c.max_length < 100 THEN ' NVARCHAR(100)' ELSE ' NVARCHAR('+ CONCAT('', c.max_length)+')' END + ' NOT NULL'
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END AS AlterColumnSQL,
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'ALTER TABLE ' + QUOTENAME(t.name) + ' ADD CONSTRAINT ' +'DF_'+t.name+ '_'+c.name +
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' DEFAULT ' + d.definition + ' FOR ' + QUOTENAME(c.name) AS add_constraint_sql
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FROM sys.tables t
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INNER JOIN sys.default_constraints d ON t.object_id = d.parent_object_id
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INNER JOIN sys.columns c ON d.parent_column_id = c.column_id AND c.object_id = t.object_id
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INNER JOIN sys.types ty on ty.system_type_id = c.system_type_id
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AND ty.name in ('nvarchar', 'varchar', 'char', 'nchar')
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--不是nvarchar 或者是nvarchar 但是长度小于100
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and (ty.name!='nvarchar' or (ty.name='nvarchar' and c.max_length<100)) |