Which of the following descriptions about Hint optimization strategies isincorrect?
For composite indexes, B+ tree is built left-to-right.
The parameter innodb_log_buffer_size is used to set the size of the InnoDB log buffer, primarily to improve I/O performance for writing logs. What is the default size in a 16-core, 64GB GaussDB (for MySQL) instance?
Which of the following methods cannot be used to view a table's fragmentation rate?
Which regex pattern is used to match one or more ‘h’ characters?
For multidimensional clue analysis in data security auditing, which clues are supported by Huawei Cloud?
When using “Full SQL Insight,” DAS must be enabled to collect all SQL. After enabling, what is the performance overhead within?
GaussDB (for MySQL) deployment supports both public cloud and hybrid cloud.
GaussDB (for MySQL) uses snapshots for both full and incremental backups, with second-level creation efficiency.
A database administrator received a "cannot connect" error. Diagnosis revealed that a new business caused client connections to exceed the preset limit. Which parameter should be adjusted to fix the error?
