MYSQL 迁移 OceanBase 4.3.5 Oracle 模式 改造清单

GET_LOCK / RELEASE_LOCK 咨询锁函数unknown · major · my.func.advisory_locks ALTER TABLE ALGORITHM= / LOCK= 在线 DDL 子句unknown · minor · my.ddl.alter_algorithm ALTER TABLE 增删主键限制unknown · critical · my.ddl.alter_primary_key AUTO_INCREMENT 自增列unknown · minor · my.ddl.auto_increment 反引号标识符unknown · minor · my.syntax.backtick MySQL BINARY/VARBINARY 类型unknown · major · my.type.binary_varbinary MySQL BIT 类型unknown · major · my.type.bit 表/列级 CHARSET 与 COLLATE 子句unknown · major · my.ddl.charset_collation CHECK 约束执行与静默忽略差异unknown · critical · my.ddl.check_constraint CHECK TABLE 管理语句unknown · major · my.admin.check_table CHECKSUM TABLE 校验语句unknown · major · my.admin.checksum_table 列 DEFAULT 表达式兼容差异unknown · critical · my.ddl.default_expression DECLARE ... HANDLER 条件处理器unknown · major · my.proc.handler CONVERT(expr USING charset) 字符集转换unknown · minor · my.func.convert_using MySQL CREATE TABLE ... AS SELECTunknown · major · my.ddl.create_table_as_select DATE_ADD / DATE_SUB / ADDDATE / SUBDATE 日期运算函数unknown · minor · my.func.date_add_interval DATE_FORMAT 函数（% 格式符体系）unknown · minor · my.func.date_format MySQL DATETIME/TIMESTAMP 类型语义unknown · critical · my.type.datetime_timestamp DEFINER 定义者权限子句unknown · minor · my.proc.definer MySQL 降序索引列unknown · major · my.index.descending ENGINE= 存储引擎子句unknown · minor · my.ddl.engine_clause ENUM 枚举类型unknown · major · my.type.enum 事件调度器（CREATE EVENT / ON SCHEDULE）unknown · major · my.proc.event MySQL ExtractValue XML 函数unknown · major · my.func.extractvalue MySQL 外键约束unknown · critical · my.ddl.foreign_key 全文索引（FULLTEXT / MATCH AGAINST）unknown · major · my.ddl.fulltext 生成列（GENERATED ALWAYS AS ... VIRTUAL/STORED）unknown · major · my.ddl.generated_column GROUP_CONCAT 聚合函数unknown · minor · my.func.group_concat MySQL HANDLER 低层表访问语句unknown · critical · my.syntax.handler IF(expr, v1, v2) 流程控制函数unknown · minor · my.func.if IFNULL 函数unknown · minor · my.func.ifnull USE / FORCE / IGNORE INDEX 索引提示unknown · minor · my.syntax.index_hints INSERT IGNORE 容错插入unknown · major · my.syntax.insert_ignore 整数显示宽度 INT(n)unknown · minor · my.type.int_display_width JOIN ON 中的相关子查询unknown · critical · my.subquery.join_on_correlated JSON 列 -> 取 JSON 操作符unknown · minor · my.syntax.json_arrow JSON 列 ->> 取文本操作符unknown · minor · my.syntax.json_arrow_text JSON_* 函数族unknown · major · my.func.json_family LAST_INSERT_ID 函数unknown · major · my.func.last_insert_id MySQL LATERAL 派生表unknown · critical · my.syntax.lateral_derived LIMIT offset, count 逗号写法unknown · minor · my.syntax.limit_comma LOAD DATA [LOCAL] INFILE 批量装载unknown · major · my.syntax.load_data MySQL LOAD_FILE 函数unknown · critical · my.func.load_file LOCK TABLES / UNLOCK TABLESunknown · major · my.syntax.lock_tables MySQL MASTER_POS_WAIT 复制等待unknown · blocker · my.func.master_pos_wait MySQL MEDIUMINT 类型unknown · major · my.type.mediumint MySQL 多值索引unknown · critical · my.index.multi_valued AES_ENCRYPT/AES_DECRYPT 密文兼容unknown · blocker · my.func.aes_crypto MySQL Enterprise 非对称加密函数族unknown · blocker · my.func.asymmetric_crypto FROM_BASE64/TO_BASE64 编码细节unknown · major · my.func.base64 BIN/BIT_COUNT 位字符串辅助函数unknown · major · my.func.bit_helpers MySQL 位异或 ^unknown · major · my.op.bitwise_xor MySQL BLOB 基础类型unknown · major · my.type.blob_base MySQL BOOLEAN/BOOL 类型unknown · minor · my.type.boolean MySQL 逻辑 XORunknown · major · my.op.boolean_xor DAY/DAYOFWEEK/DAYOFYEAR 日序函数族unknown · critical · my.func.calendar_day LCASE/UCASE 大小写别名unknown · major · my.func.case_alias CHAR 数值序列转字符unknown · critical · my.func.char_code MySQL CHAR/VARCHAR 类型unknown · minor · my.type.character_base COMPRESS/UNCOMPRESS 二进制格式unknown · critical · my.func.compression MySQL CONCAT 函数unknown · major · my.func.concat CONCAT_WS 分隔拼接的 NULL 语义unknown · major · my.func.concat_ws CONNECTION_ID/USER/SYSTEM_USER 会话身份unknown · critical · my.func.connection_identity MySQL CONVERT_TZ 时区转换unknown · critical · my.func.convert_tz CREATE TABLE ... LIKE 克隆表结构unknown · major · my.ddl.create_table_like MySQL CURDATE 函数unknown · major · my.func.curdate MySQL DATABASE/SCHEMA 当前库函数unknown · major · my.func.current_database CURTIME/SYSDATE 当前时间语义unknown · critical · my.func.current_time DAYNAME/MONTHNAME 本地化名称unknown · major · my.func.date_name MySQL DATE 类型unknown · minor · my.type.date_base DATEDIFF 整日边界差unknown · critical · my.func.datediff DELETE IGNORE 错误降级unknown · critical · my.dml.delete_ignore DELETE ORDER BY / LIMITunknown · major · my.dml.delete_order_limit MySQL 除法零除语义unknown · critical · my.op.division_zero_semantics MySQL bare DOUBLE 类型别名unknown · major · my.type.double_alias FIELD/ELT 位置与取值函数unknown · major · my.func.field_elt FIND_IN_SET 逗号集合查找unknown · critical · my.func.find_in_set MySQL FIXED 定点数别名unknown · minor · my.type.fixed_alias GROUP BY 后缀式 WITH ROLLUPunknown · major · my.syntax.group_by_with_rollup HEX/UNHEX 二进制与文本转换unknown · critical · my.func.hex_helpers