Which statements about GaussDB (for MySQL) read-only nodes are correct?
System tables and views record metadata for DB objects and users. Which system table or viewcannotbe used to query user information?
Log Store uses append-only storage. Like Page Store, it also produces holes.
When looping over cursors, overflow can occur if end-of-data isn’t checked. Which handlers can be used to control execution properly?
Using the EXPLAIN command in GaussDB (for MySQL), which of the following isnota valid Select_type?
Hints are used when the user knows the optimal execution plan or to stabilize SQL execution plans for performance tuning.
Which of the following are advanced features of GaussDB (for MySQL)?
Huawei Cloud DAS (Cloud DBA) provides intelligent monitoring, diagnostics, and optimization to ensure stable DB operation.
DAS Enterprise Edition supports export tasks: data only, structure only, or both, in SQL or CSV format.
Which metrics can be displayed in real-time performance?
