9 lines
		
	
	
		
			295 B
		
	
	
	
		
			MySQL
		
	
	
	
		
		
			
		
	
	
			9 lines
		
	
	
		
			295 B
		
	
	
	
		
			MySQL
		
	
	
	
|  | IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Control_PointCropping' AND COLUMN_NAME = 'States')
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|  | BEGIN
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|  |     ALTER TABLE Control_PointCropping DROP COLUMN States;
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|  | END
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|  | go
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|  | alter table Control_PointCropping add States int null
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|  | go
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|  | update Control_PointCropping set States=0
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|  | go
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