14 lines
		
	
	
		
			139 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
		
			139 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
db.posts.update({
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	$or: [{
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		mediaIds: null
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	}, {
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		mediaIds: {
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			$exists: false
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		}
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	}]
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}, {
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	$set: {
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		mediaIds: []
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	}
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}, false, true);
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