SQL Query

Append Mode: Each time a SQL statement is executed, the new result set is appended to the previous one.
Overwrite Mode: Each time a SQL statement is executed, the new result set overwrites the previous one.

You can run SQL statements in a SQL window, which helps you easily manage databases.

Figure 1 SQL Query

**Table 1** Function description
Function	Description
Execute SQL	Executes SQL statements.
Format SQL	Improves readability of SQL statements. Formatting SQL statements enables statements to be displayed in line break mode, but does not change their logic and semantics. All SQL statements in the SQL window will be formatted. You cannot format only one of them.
Executing SQL Plan	Reports execution of SQL statements to make troubleshooting easy and optimize SQL processing performance.
SQL Favorites	Allows you to add, view, and manage frequently-used SQL statements.
Save Executed SQL Statements	After this function is enabled, the system saves the recently executed SQL statements to the server.
SQL Input Prompt	Helps you quickly enter a specific database, table, or field name when you enter a SQL statement in the SQL window.
Full Screen	Shows SQL statements on a full screen.
SQL History	Shows the SQL execution details.
Messages	Shows the information returned after a SQL statement is executed.
Result Set	Shows SQL execution results. Allows you to view details about a single row, copy a row, copy a column, set a column, and more.
Overwrite/Append Mode	Append Mode: Each time a SQL statement is executed, the new result set is appended to the previous one. Overwrite Mode: Each time a SQL statement is executed, the new result set overwrites the previous one.

Log in to the Huawei Cloud console.
Click in the upper left corner and select a region and project.
Click in the upper left corner, and under Databases, click Data Admin Service.
In the navigation pane on the left, choose Development Tool.

You can also click Go to Development Tool on the overview page.
Locate the DB instance that you want to log in to and click Log In in the Operation column.
On the top menu bar, choose SQL Operations > SQL Query.