GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT...
#(必须参数)是不是string 为null的都要变成真正为null--null-string'\\N'--null-non-string'\\N'\ #(非必须)写入到hive的分区信息,hive无分区无需这步--hive-partition-key dt \--hive-partition-value $day \ #写入hive的方式--hive-overwrite \--num-mappers1\ #(必须参数)导入到hive时删除 \n,...
-D <property=value> define a valuefora given property -fs <file:///|hdfs://namenode:port> specify default filesystem URL to use, overrides'fs.defaultFS'property from configurations. -jt <local|resourcemanager:port> specify a ResourceManager -files <file1,...> specify a comma-separated list...
如果每个事务执行一个或一个或 一个 或一个 操作,那么能够支持的并发读写事务的数量 是: INSERTUPDATEDELETEInnoDB AI检测代码解析 (innodb_page_size / 16) * innodb_rollback_segments 1. 如果每个事务执行一个 和一个或一个或 一个 操作,那么...
'UPDATE', 'USAGE', 'XA_RECOVER_ADMIN' ] __ssl_options_parameterized__ = [ 'CIPHER', 'ISSUER', 'SUBJECT' ] __ssl_options__ = __ssl_options_parameterized__ + [ 'SSL', 'X509' ] __all_privileges__ = [ 'ALTER', 'ALTER ROUTINE', 'BACKUP_ADMIN', 'BINLOG_ADMIN', 'CONNECTION_...
DB_TRX_ID:6字节长的事务ID,存储了当前事务在做INSERT或UPDATE语句操作时的最后一个事务ID; DB_ROLL_PTR:7字节长的回滚指针,其指向写入回滚段的undo log记录,通过它可以将不同的版本串联起来,形成版本链。这个如果不定期提交事务,那么会使回滚部分占满空间。 在MVCC中读操作有两种,快照读(snapshot read)和当前...
replaceDuplicates: bool (default: false) - If true, input rows that have the same value for a primary key or unique index as an existing row will be replaced, otherwise input rows will be skipped. threads: int (default: 8) - Use N threads to sent file chunks to the server. bytes...
A secondary index over a virtual column became corrupted when the index was built online. For UPDATE (https://dev.mysql.com/doc/refman/5.7/en/update.html) statements, we fix this as follows: If the virtual column value of the index record is set to NULL, then we generate this value fr...
Since Redis always uses the last processed # line as value of a configuration directive, you'd better put includes # at the beginning of this file to avoid overwriting config change at runtime. # # If instead you are interested in using includes to override configuration # options, it is ...
Microsoft Windows:On Windows, theMySQL Configuratoroption to 'Update the Start menu link' did not function. (Bug #35848493) Microsoft Windows:On Windows,MySQL Configuratorcan now perform in-place upgrades. For example, MySQL Server 8.3.0 can replace an existing MySQL Server 8.2.0 installation tha...