17 行
		
	
	
	
		
			501 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
		
		
			
		
	
	
			17 行
		
	
	
	
		
			501 B
		
	
	
	
		
			PHP
		
	
	
	
	
	
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								<?php
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								defined('BASEPATH') OR exit('No direct script access allowed');
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								class Migration_alter_lotw_user_table extends CI_Migration {
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									public function up() {
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										$this->db->query("ALTER TABLE lotw_users ADD UNIQUE INDEX callsign_UNIQUE (callsign ASC)");
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										$this->db->query("ALTER TABLE lotw_users DROP INDEX callsign");
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									}
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									public function down(){
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										$this->db->query("ALTER TABLE lotw_users DROP INDEX callsign_UNIQUE");
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										$this->db->query("ALTER TABLE lotw_users ADD INDEX callsign (callsign)");
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									}
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								}
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