categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding performance is poor. In addition to the support for single‐sharding fields, Apache ShardingSphere also supports sharding based on multiple fields. Sharding Algorithm Algorithm for sharding data, supporting encrypted fields. • Comparison operations are not supported for encrypted fields, such as GREATER THAN, LESS THAN, ORDER BY, BETWEEN. • Calculation operations are not supported for encrypted fields, such

categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding performance is poor. In addition to the support for single‐sharding fields, Apache ShardingSphere also supports sharding based on multiple fields. Sharding Algorithm Algorithm for sharding data, supporting • The case‐insensitive queries are not supported for encrypted fields. • Comparison operations are not supported for encrypted fields, such as GREATER THAN, LESS THAN, ORDER BY, BETWEEN, LIKE. • Calculation

categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding performance is poor. In addition to the support for single‐sharding fields, Apache ShardingSphere also supports sharding based on multiple fields. Sharding Algorithm Algorithm for sharding data, supporting encrypted fields. • Comparison operations are not supported for encrypted fields, such as GREATER THAN, LESS THAN, ORDER BY, BETWEEN. • Calculation operations are not supported for encrypted fields, such

categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding performance is poor. In addition to the support for single‐sharding fields, Apache ShardingSphere also supports sharding based on multiple fields. Sharding Algorithm Algorithm for sharding data, supporting • The case‐insensitive queries are not supported for encrypted fields. • Comparison operations are not supported for encrypted fields, such as GREATER THAN, LESS THAN, ORDER BY, BETWEEN, LIKE. • Calculation

categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding encryption rules passed by the user, find out the fields that need to be encrypted/decrypted and the encryptor/decryptor used to encrypt/decrypt the target fields, and then interact with the underlying database Encryption Process For example, if there is a table in the database called t_user, there are actually two fields pwd_plain in this table, used to store plain text data, pwd_cipher, used to store cipher text data

Background With information technology innovating, more and more applications established in the new fields, prompt and push evolution of human society’s cooperation mode. Data is increasing explosively, categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding regular SQL. Unsupported • Need to process original inventory data before encryption; • Encrypted fields cannot support case insensitive queries; • The value of encryption columns cannot support comparison

Background With information technology innovating, more and more applications established in the new fields, prompt and push evolution of human society’s cooperation mode. Data is increasing explosively, categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding document, v5.1.2 Unsupported • Need to process original inventory data before encryption; • Encrypted fields cannot support case insensitive queries; • The value of encryption columns cannot support comparison

email; } } You can define methods to set individual fields in the table. The next chapter explains how to get the values of individual fields. Student.xml File To define SQL mapping statement using

Background With information technology innovating, more and more applications established in the new fields, prompt and push evolution of human society’s cooperation mode. Data is increasing explosively, categorizes data to multiple databases or tables according to some certain rules through certain fields, with each sharding con‐ taining only part of the data. For example, according to primary key sharding encryption rules passed by the user, find out the fields that need to be encrypted/decrypted and the encryptor/decryptor used to encrypt/decrypt the target fields, and then interact with the underlying database

steps: 1. When the job is executed, program will create one record in the JOB_EXECUTION_LOG, and all fields except failure_cause and complete_time are not empty. 2. When the job completes execution, program