SELECT *, _rowid FROM tb_test2; --出错:[Err] 1054 - Unknown column '_rowid' in 'field list' #解决错误 #[Err] 1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column ‘information_schema.PROFILING.SEQ’ which is not functionally dependent on ...
// 1054 - Unknown column '_rowid' in 'field list' select _rowid from test ; 1. 2. 3. 这里找到了解释: 当创建表时没有显示定义主键时. 首先判断表中是否有非空的整形唯一索引,如果有,则该列为主键(这时候可以使用 select _rowid from table 查询到主键列). 如果没有符合条件的则会自动创建一个6...
ALGORITHM[=]{DEFAULT|INPLACE|COPY} LOCK[=]{DEFAULT|NONE|SHARED|EXCLUSIVE} ALGORITHM 指定了创建或删除索引的算法,COPY 表示按照 MySQL5.1 版本之前的工作模式,即创建临时表的方式。INPLACE 表示索引创建或删除操作不需要创建临时表。DEFAULT 表示根据参数 old_alter_table 来判断是通过 INPLACE 还是 COPY 的算法...
Init() : ReverseIndexRangeScanIterator, RowIDIntersectionIterator, RowIDUnionIterator, RowIterator init() : Rpl_acf_configuration_handler, Rpl_async_conn_failover_add_managed, Rpl_async_conn_failover_add_source, Rpl_async_conn_failover_delete_managed, Rpl_async_conn_failover_delete_source, Rpl_...
EXPLAIN FORMAT=TREEnow shows the clustered primary key scan for RowID-Ordered Retrieval (ROR) intersection plans. (Bug #37199800) Pushing down a condition which had an aggregate function in aWHEREclause caused the aggregate function to be evaluated when it should not have been. (Bug #36421735)...
►RowIDCapableRowIterator ►RowIDIntersectionIterator ►RowIDUnionIterator ►RowIterator ►Rows_applier_psi_stage ►Rows_log_event ►Rows_query_log_event ►Rpl_acf_configuration_handler ►Rpl_acf_status_configuration ►Rpl_applier_reader ►Rpl_async_conn_failover_add_managed ►Rpl_as...
对于表中数据的存储,InnoDB 存储引擎采用了聚集(clustered)的方式,每张表都是按 主键的顺序进行存储的,如果没有显式地在表定义时指定主键,InnoDB 存储引擎会为每一 行生成一个 6 字节的 ROWID,并以此作为主键。 InnoDB 存储引擎是 MySQL 数据库最为常用的一种引擎,Facebook、Google、Yahoo 等 公司的成功应用已经...
2 rows in set (0.00 sec) 【ok】安全模式启动 /usr/local/mysql/bin/mysqld_safe & -- === 【3】ERROR 1296 (HY000): Got error 157 'Unknown error code' from NDBCLUSTER mysql> use bg; Database changed mysql> mysql> mysql> show create table ...
ORA-600 qertbfetchbyrowid ORA-600 kmgs_parameter_update_timeout_1 ORA-15196: invalid ASM block header [kfc.c:26076] [hard_kfbh] adminSays: 3月 15, 2020 at 上午 10:44 bbed cleanup lock conflict kdsgrp1 ORA-00202 ora-00283 ora-00600 2662 ora-00600 2663 ora-00600 4137 ora-00600 4193...
(from_field); } } Field * find_field_in_table(THD *thd, TABLE *table, const char *name, size_t length, bool allow_rowid, uint *cached_field_index_ptr) { Field **field_ptr, *field; uint cached_field_index= *cached_field_index_ptr; if (cached_field_index < table->s->...