Updated on 2025-05-29 GMT+08:00
FAQ
- What is the maximum number of columns in a single GaussDB table?
- How do I query the partition and index information of a partitioned table?
- What is OID?
- What is UDF?
- What wildcards are supported in GaussDB? How do I use them?
- Is there a limit on the length of a database object name?
- How do I view the creation time of a table?
- How do I create indexes in parallel?
- How do I create an auto-increment column?
- Can I query the GaussDB memory usage through SQL statements?
- What are the differences between LIMIT 2, LIMIT 2,3 and LIMIT 2 OFFSET 3?
- How do I create a column whose default value is the current time?
- How do I determine whether a column is null?
- How do I obtain the username for connecting to a database?
- How do I query the time difference between two time points?
- What are the types of SQL languages?
- What is the function of a trigger?
- What are the four characteristics of correctly executing database transactions?
- What are the differences between the DROP, TRUNCATE, and DELETE methods in GaussDB?
- How many bytes does a Chinese character occupy in GaussDB?
- How Do I Set the Validity Period of an Account?
- What Are the Differences Between Unique Constraints and Unique Indexes?
- How Do I Create a Weak Password in GaussDB?
- What is Dirty Read, Phantom Read, and Non-repeatable Read?
- What Is MVCC?
- Which Date/Time Types Contain the Time Zone and Which Do Not?
- What Is the Difference Between count(*) and count(column)?
- What Is the Relationship Between an Empty String and NULL?
- What Are WALs and Log File Paths?
- What Are the Schemas, Users, and Roles in GaussDB?
- Does GaussDB Supports Dynamic Memory Management?
- What Is the Schema Starting with pg_temp or pg_toast_temp?
- What Are the Differences Between Functions and Stored Procedures?
- Why Can a User Log In to the Database After the CONNECT ON DATABASE Permission Is Granted to the REVOKE User?
- How Do I Improve the Efficiency when the Entire Table Is Associated with UPDATE?
- How Do I Ignore Case When Using LIKE for Fuzzy Search?
- After the String Processing Function Is Used, the Query Does Not Use the Index. What Should I Do?
- Why Cannot the Table Name or Column Name Be Identified During Query?
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