How to query the table structure in navicat

Navicat query table structure method: connect to the database, expand the "Table" node, right-click the table, and select "Structure". Table structure information includes: table name, number of rows, column information (column name, data type, whether it is null), index information (index name, index type, column, whether it is unique), trigger information (trigger name, event, action).

Querying the table structure in Navicat

How to query the table structure?

Navicat is a database management tool that can query the table structure through the following steps:

Steps:

1. Connect to database.
2. Expand the database node in the object tree.
3. Expand the "Table" node.
4. Right-click the table whose structure you want to query.
5. Select "Structure" from the menu.

Result:

The "Structure" tab will display the following information for the table:

• Table name: The name of the table.
• Number of rows: An estimate of the number of rows in the table.
• Columns: The list of columns in the table, including column names, data types, whether null values ​​are allowed, and other information.
• Index: List of indexes created on the table.
• Triggers: List of triggers defined on the table.

Detailed description:

• Column information:

  • Column name: The name of the column.
  • Data type: The data type allowed to be stored in the column.
  • Whether null values ​​are allowed: Indicate whether null values ​​are allowed in the column.
  • Key: Indicate whether the column is the primary key, foreign key, or unique key.
  • Default value: Specify the default value of the column.

• Index information:

  • Index name: The name of the index.
  • Index type: Type of index (for example, primary key index, unique index, full-text index).
  • Columns: Columns included in the index.
  • Is it unique: Indicates whether the index is unique.

• Trigger information:

  • Trigger name: The name of the trigger.
  • Events: Events triggered by triggers (for example, insert, update, delete).
  • Action: The action performed by the trigger (for example, insert, update, delete).

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