41 行
1.5 KiB
PHP
41 行
1.5 KiB
PHP
<?php
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defined('BASEPATH') OR exit('No direct script access allowed');
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class Migration_dxcc_index extends CI_Migration {
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public function up() {
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// check if index idx_dxcc_prefixes_logic exists
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// if not, add it
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$prefixes_index = $this->db->query("SHOW INDEX FROM dxcc_prefixes WHERE Key_name = 'idx_dxcc_prefixes_logic'")->num_rows();
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if ($prefixes_index == 0) {
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$this->db->query("ALTER TABLE `dxcc_prefixes` ADD INDEX `idx_dxcc_prefixes_logic` (`call`, `start`, `end`)");
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}
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// check if index dxcc_exceptions exists
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// if not, add it
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$exceptions_index = $this->db->query("SHOW INDEX FROM dxcc_exceptions WHERE Key_name = 'idx_dxcc_exceptions_logic'")->num_rows();
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if ($exceptions_index == 0) {
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$this->db->query("ALTER TABLE `dxcc_exceptions` ADD INDEX `idx_dxcc_exceptions_logic` (`call`, `start`, `end`)");
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}
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}
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public function down(){
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// check if index idx_dxcc_prefixes_logic exists
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// if so, drop it
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$prefixes_index = $this->db->query("SHOW INDEX FROM dxcc_prefixes WHERE Key_name = 'idx_dxcc_prefixes_logic'")->num_rows();
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if ($prefixes_index == 1) {
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$this->db->query("ALTER TABLE dxcc_prefixes DROP INDEX idx_dxcc_prefixes_logic");
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}
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// check if index dxcc_exceptions exists
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// if so, drop it
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$exceptions_index = $this->db->query("SHOW INDEX FROM dxcc_exceptions WHERE Key_name = 'idx_dxcc_exceptions_logic'")->num_rows();
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if ($exceptions_index == 1) {
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$this->db->query("ALTER TABLE dxcc_exceptions DROP INDEX idx_dxcc_exceptions_logic");
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}
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}
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}
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