43 lines
2.6 KiB
SQL
43 lines
2.6 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,
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c.name AS column_name,
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d.name AS constraint_name,
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ty.Name as typeName,
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c.max_length as length
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FROM sys.tables t
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INNER JOIN sys.columns c ON c.object_id = t.object_id
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LEFT JOIN sys.default_constraints d ON d.parent_object_id = c.object_id AND d.parent_column_id = c.column_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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WHERE c.max_length < 100 AND c.max_length > 0
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--带维护sql 的查询
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SELECT t.name AS table_name,
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c.name AS column_name,
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d.name AS constraint_name,
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ty.Name as typeName,
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c.max_length as length,
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'ALTER TABLE ' + QUOTENAME(t.name) + ' DROP CONSTRAINT [' + d.name + ']' AS drop_constraint_sql,
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CASE WHEN c.max_length = -1 THEN 'ALTER TABLE ' + QUOTENAME(t.name) + ' ALTER COLUMN ' + QUOTENAME(c.name) + ' NVARCHAR(MAX)' + CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END
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WHEN c.max_length > 0 AND c.max_length < 100 THEN 'ALTER TABLE ' + QUOTENAME(t.name) + ' ALTER COLUMN ' + QUOTENAME(c.name) + ' NVARCHAR(' + CAST(100 AS VARCHAR(10)) + ')' + CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END
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WHEN c.max_length = 8000 THEN 'ALTER TABLE ' + QUOTENAME(t.name) + ' ALTER COLUMN ' + QUOTENAME(c.name) + ' NVARCHAR(' + CAST(4000 AS VARCHAR(10)) + ')' + CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END
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ELSE 'ALTER TABLE ' + QUOTENAME(t.name) + ' ALTER COLUMN ' + QUOTENAME(c.name) + ' ' + ty.name + '(' + CAST(c.max_length AS VARCHAR(10)) + ')' + CASE WHEN c.is_nullable = 1 THEN ' NULL' ELSE ' NOT NULL' END
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END AS AlterColumnSQL,
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'ALTER TABLE ' + QUOTENAME(t.name) + ' ADD CONSTRAINT ' +'DF_'+t.name+ '_'+ c.name + ' 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.columns c ON c.object_id = t.object_id
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LEFT JOIN sys.default_constraints d ON d.parent_object_id = c.object_id AND d.parent_column_id = c.column_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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and (ty.name != 'nvarchar' or (ty.name = 'nvarchar' and (c.max_length = -1 or (c.max_length < 100 and c.max_length > 0)))) |