SQL Developer Tips and Tricks

Download the correct Java package for your Windows version, accept the license, and install the Java runtime environment and Java software environment development to support your sequel developer.

Install and configure SQL Developer on Windows, choosing 64-bit with Java included or 32-bit with Java separately, then unzip, launch, and test the database connection.

Create a table in SQL Developer using the GUI, defining columns such as customer_id (number, not null) and address fields with varchar2 sizes, then click OK to generate the table.

Insert data into the customer table via data tab and insert icon, as shown with two rows and a commit. Alternatively, use SQL insert statements if you skip the interface.

Learn how to update existing records in a SQL table by editing the address line one for a customer and saving the change, with a quick verification of the update.

Learn to delete data from a table by selecting rows, marking them for delete, and committing the change, including single and multiple row deletions.

Learn how to drop a table, copy a table, and truncate data in SQL, including creating a new table from an existing one and clearing its contents.

Learn how to export data from a database to various formats including Excel, CSV, and insert scripts, using the export wizard to generate portable data files.

Learn how to export data to Excel, import data from Excel, and copy a single table between databases using the SQL Developer database copy wizard.

Drag tables onto the worksheet to auto-create select statements and choose columns, then use the builder to filter, sort by ascending, and join data.

Filter data using the criteria tab to apply conditions such as customer id = 10. Use between 20 and 50, greater than, and like on names, with single-quoted dates.

Learn to join data from multiple tables using the beauty editor, define the join key (customer id), and inspect the auto-generated SQL to filter and select the desired columns.

Learn to perform left outer joins, right outer joins, and full outer joins to combine customer and sales data in a builder tool, displaying all records regardless of matches.

Learn how to group data by customer id, apply aggregates such as sum and average, and include or exclude columns in a group by to display summaries.

Create and save a SQL query as a database view, name it sales data, and apply to access the saved data after closing the window.

Learn how to save your SQL script to the desktop, reopen it later, and run it to view your sales data results.

View SQL history in SQL Developer to retrieve and re-run last week's queries stored in the Oracle database by copying from history and pasting.

Monitor inventory database sessions and queries to identify heavy users and long-running statements using the monitor sessions tool, view SQL IDs, and stop problematic queries.

Learn how to run and read the explain plan to understand how Oracle executes a sql query, identify full table access, joins, sorts, and costs to diagnose slow queries.

Learn to create a synonym in SQL Developer to hide the real object name by using an alias like secret name for the customer table.

Create a new user named John, set password John 1 2 3, assign default tablespace system and temp, and grant insert, delete, and select privileges on the customer and sales tables.

Revoke insert, update, and delete privileges for user John on the customer table, then apply changes and verify the privileges are revoked.