Question

我基本上尝试创建一个应该执行以下操作的动态sql脚本

IF EXISTS(SELECT * FROM sys.indexes WHERE object_id = object_id('FinData2000_1') AND NAME = 'idx_FinData2000_1')
            drop  index idx_FinData2000_1 on FinData2000_1

以下是未解析的动态脚本

SET @sql = 'IF EXISTS(SELECT * FROM sys.indexes WHERE object_id = object_id('
            + @tableName + '') AND NAME =  'idx_' + @tableName + '
            drop  index' + @tableName + '.idx_' + @tableName;

Answer 1

您的动态字符串不正确，请尝试：

Id 1   : (1.5, (2.5, 3.0))
 Id 2   : (1.5, (2.5, 4.0))

输出：print（@SQL）：

SET @sql = 'IF EXISTS(SELECT * FROM sys.indexes WHERE object_id = object_id('''
            + @tableName + ''') AND NAME =  ''idx_' + @tableName + ''' 
            drop  index idx_' + @tableName + ' ON ' + @tableName;

Answer 2

动态查询

declare @tablename varchar(100) = 'tablename'
declare @indexname varchar (100) = 'indexname'
declare @query varchar(max) = 'IF EXISTS(SELECT * FROM sys.indexes WHERE object_id = object_id('+@tablename+') AND NAME = '+@indexname+') 
            drop  index '+@indexname+' on '+@tablename+''

适用于您传递的任何表和索引名称

动态脚本无法正确解析

2 个答案: