. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Where can I ask questions about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . watch to get started learning about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . 76 Where can I read additional FAQs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the query before sending it down. If we were to write something like: WHERE col = @my_user_variable What MySQL will see is: WHERE col = 'foobar' This way, no session state is needed to evaluate the query

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Where can I ask questions about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . watch to get started learning about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . 68 Where can I read additional FAQs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the query before sending it down. If we were to write something like: WHERE col = @my_user_variable What MySQL will see is: WHERE col = 'foobar' This way, no session state is needed to evaluate the query

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Where can I ask questions about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . watch to get started learning about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . 73 Where can I read additional FAQs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the query before sending it down. If we were to write something like: WHERE col = @my_user_variable What MySQL will see is: WHERE col = 'foobar' This way, no session state is needed to evaluate the query

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Where can I ask questions about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . watch to get started learning about Vitess? . . . . . . . . . . . . . . . . . . . . . . . . . 98 Where can I read additional FAQs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . shardmaps.json -replication-mode “ROW” -output-mode text -sql “SELECT FROM users; SELECT FROM users WHERE id IN (10, 17, 42, 1000);” . . . 511 Column List . . . . . . . . . . . . . . . . . . . . . . . .

the query before sending it down. If we were to write something like: WHERE col = @my_user_variable What MySQL will see is: WHERE col = 'foobar' This way, no session state is needed to evaluate the query non-overlapping data. Shard Naming Shard names have the following characteristics: • They represent a range, where the left number is included, but the right is not. • Their notation is hexadecimal. • They are left to coordinate among themselves as a cluster. • It enables Vitess to discover tablets, so it knows where to route queries. • It stores Vitess configuration provided by the database administrator that is

non-overlapping data. Shard Naming Shard names have the following characteristics: • They represent a range, where the left number is included, but the right is not. • Their notation is hexadecimal. • They are left to coordinate among themselves as a cluster. • It enables Vitess to discover tablets, so it knows where to route queries. • It stores Vitess configuration provided by the database administrator that is underlying MySQL instance. This allows for efficient execution of functions such as VReplication where a subscriber can indirectly receive events from the binary logs of one or more MySQL instance shards

to coordinate among themselves as a cluster. • It enables Vitess to discover tablets, so it knows where to route queries. • It stores Vitess configuration provided by the database administrator that is events from the binlog. This would allow for efficient execution of processes such as VReplication where a subscriber can indirectly receive and apply events from the binlog. A user can apply filtering rules default. You will need to disable it: sudo setenforce 0 14 Build Vitess Navigate to the directory where you want to download the Vitess source code and clone the Vitess GitHub repo: cd ~ git clone https://github

non-overlapping data. Shard Naming Shard names have the following characteristics: • They represent a range, where the left number is included, but the right is not. • Their notation is hexadecimal. • They are left to coordinate among themselves as a cluster. • It enables Vitess to discover tablets, so it knows where to route queries. • It stores Vitess configuration provided by the database administrator that is underlying MySQL instance. This allows for efficient execution of functions such as VReplication where a subscriber can indirectly receive events from the binary logs of one or more MySQL instance shards

SelectScatte r select * from user where 1 = id 
 SelectEqual select * from user where id = 1 
 SelectEqual select * from user where name = 'foo' 索引不唯⼀一 SelectIN select * from user where id in (1, 2) 
 SelectScatte SelectScatte r select * from user where id = 1 and var = 2 or var = 3 
 SelectKeyran ge select * from user where keyrange(1, 2) and a = 1 重写之后， 变成： select * from user where a = 1 SelectIN select exists exists (select 1 from dual) from user where id in (1, 2) 
 UpdateEqual update user set val = 1 where id = 1 
 Plan SQL语句 原因 NoPlan select * from user union select * from user union NoPlan set a=1

double SHA1 hash of the password and the server has to store the password as plain-text, attacks where this issue is of relevance are not likely. However, it is recommended to perform a timing-safe This behavior can be observed in the following example. Code example: sql := "select a,b,c from t where x = 1234 and y = 1234 and z = 'apple' and foo = 0x1337" redactedSQL, err := RedactSQLQuery(sql) redactedSQL) Output: select a, b, c from t where x = :redacted1 and y = :redacted1 and z = :redacted2 and foo = 0x1337 Expected output: select a, b, c from t where x = :redacted1 and y = :redacted1 and z