34 lines
1.1 KiB
MySQL
34 lines
1.1 KiB
MySQL
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-- 为xq_client_log表添加device_id字段
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-- 解决SQLSyntaxErrorException: Unknown column 'device_id' in 'field list'错误
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-- 检查字段是否已存在，如果不存在则添加
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SET @sql = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'xq_client_log'
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AND COLUMN_NAME = 'device_id') > 0,
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'SELECT "device_id字段已存在" as message',
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'ALTER TABLE xq_client_log ADD COLUMN device_id varchar(50) NOT NULL COMMENT "项圈编号" AFTER id'
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));
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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-- 为device_id字段添加索引
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SET @sql2 = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'xq_client_log'
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AND INDEX_NAME = 'idx_device_id') > 0,
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'SELECT "device_id索引已存在" as message',
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'ALTER TABLE xq_client_log ADD INDEX idx_device_id (device_id)'
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));
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PREPARE stmt2 FROM @sql2;
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EXECUTE stmt2;
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DEALLOCATE PREPARE stmt2;
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-- 显示表结构确认
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DESCRIBE xq_client_log;
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