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Your ultimate MySQL IDE
MySQL GUI tool by Devart is an advanced IDE,
whose unique features make it your perfect choice for MySQL database development
and management. With smart data generation, SQL development, and comprehensive
administration tools, our Studio is a viable alternative to MySQL Workbench.
dbForge Studio for MySQL
Get a free 30-day trial of dbForge Studio
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Availability in the editions of dbForge Studio for MySQL
Feature
Enterprise
Professional
Standard
Express
Query Profiler
Copy a table with data within the same Oracle database
Step 1
Oracle provides convenient syntax that helps implement the above-mentioned scenarios. By means of the “CREATE TABLE … AS SELECT … ” command, you can create a duplicate table within the same database schema. To create an exact copy of the table preserving the table structure and all the data, execute the query as follows:
SELECT CASE expression
WHEN condition1 THEN result1
WHEN condition2 THEN result2
...
ELSE result
END
Step 2
If you want to limit your data copying to specific columns, indicate the column names after SELECT in the following way:
CREATE TABLE new_table_name
AS
SELECT column_name1,column_name2
FROM existing_table_name;
Step 3
Provided that you have already created a table, and you want to insert the data from the existing table into it, run the following:
INSERT INTO new_table_name
SELECT *
FROM existing_table_name;
Copy a table with data within the same Oracle database
Step 4
In some cases, you may want to copy the table structure but leave out the data. Similarly, you can use the "CREATE TABLE … AS SELECT … " command, but this time you need to modify it by adding the WHERE clause that is false and, consequently, will not select any data, for instance:
CREATE TABLE new_table_name
AS
SELECT *
FROM existing_table_name WHERE 1=5;
Copy a table with data within the same Oracle database
Step 5
To copy a table from one database schema to another one, you need to apply an SQL*Plus COPY command. This powerful command allows you to actually copy data between different servers. However, we will focus on copying a table between different database schemas in Oracle. The basic syntax for the command looks as follows:
COPY FROM source_database TO target_database action -
destination_table (column_name, column_name, -
column_name ...) USING query
Let’s define the important prerequisites for using this command:
You need to have the access to the specified tables and know the valid credentials for the local and remote databases in the FROM and/or TO clause.
You can indicate the new names for the columns in the destination table, otherwise, they will have the same names by default
You have to choose between four actions—REPLACE, CREATE, INSERT, or APPEND, the one that suits your particular case.
In the USING clause, you need to write a query that will be used to specify the data for copying. Here, you are free to use any type of SELECT.
Note
Note: To create a new table and then copy the data, use CREATE; to fill the created table with data, use INSERT; to replace the created table together with its contents, use REPLACE. Besides, you can use APPEND, which works both ways: if you have created a new table, it will fill it with data; if you haven't, it will first create a table and then insert the necessary data.
Let's see an example of the COPY command that copies three columns from the source table and copies only the rows in which the EMPLOYEE_ID value is greater than 50:
COPY FROM EMPLOYEES@DB -
REPLACE DBCOPY1 -
USING SELECT FIRST_NAME, LAST_NAME, SALARY -
FROM DETAILS_VIEW -
WHERE EMPLOYEE_ID > 50
Create a duplicate table with dbForge Studio for Oracle
Running queries manually requires significant time spending, that’s why if you strive to be efficient, you will probably want to use an Oracle IDE that will help you achieve your goals within a convenient graphical user interface and boost your flexibility with an opportunity to adjust the process to your requirements.
SQL Complete is a smart solution designed to meet the
increasingly sophisticated needs of SQL developers. Available as
an add-in for Visual Studio and SSMS, the tool provides
context-aware code completion, on-the-fly code refactoring,
highly customizable code formatting, and much, much more.
SQL Complete well integrates into the IDE, significantly
extending its functionality by offering a bunch of essential
additional features. The solution is bound to speed up code
creation and debugging as well as prevent occasional data or
code losses.
dbForge Fusion for SQL Server is a multi-functional Visual
Studio add-in for database development, management, and
administration. The tool provides excellent SQL coding
assistance and allows its users to debug T-SQL code, profile
queries, manage changes, populate databases, and migrate data
right in the IDE.
dbForge Fusion for SQL Server helps development teams
significantly boost their productivity, improve code quality,
and modernize database operations. Offering a bunch of coveted
features, this powerful toolset greatly expands the limits of
the IDE.
dbForge Fusion for Oracle is an advanced Visual Studio add-in
that equips developers, data professionals, and DBAs with the
unmatched functionality to improve their performance. The tool
offers essential features that initially lack in the IDE:
intelligent PL/SQL coding, Oracle PL/SQL debugger, DB change
management, query profiler, etc.
Offering a set of extensive database management and
administration tools that well integrate into the environment,
dbForge Fusion for Oracle greatly elevates development teams
productivity and lets its users go beyond the limits of the IDE.
dbForge Fusion for MySQL is a premier add-in that allows
connecting and managing MySQL databases from Visual Studio. The
tool is designed to push back the limits of the IDE by providing
extra features: routines debugger, code completion and code
formatting, query profiling, data import and export, visual
query builder, and many more.
dbForge Fusion for MySQL empowers developers, DBAs, and data
specialists to simplify the workflow, automate repetitive
processes, reduce risks associated with changes, and
significantly cut project delivery timelines.
The installation is rather simple and does not take more than a minute.
Afterwards, SQL Complete becomes accessible from the menu bar of the SSMS
you are using and/or Microsoft Visual Studio.
The downloaded free trial of dbForge SQL Complete is available for 14 days.
When it expires, SQL Complete must be activated with the purchased activation key.
To check the current status of your trial or license, go to the SQL Complete menu,
point to Help, and click About.
To check the ODBC connection status in Windows you can use the ODBC Data Source Administrator tool corresponding to your application bittness (32-bit or 64-bit):
Now let's proceed to a more detailed comparison; and here it makes sense to compare the basic capabilities of relational and non-relational database models and the way they manage and store data.
Parameter
Non-relational DBMS
RDBMS
Database structure
Hierarchy (parent-child relationship), network (many-to-many relationship), or a collection of objects
Tabular format (rows and columns)
Data storage
Data is stored in files
Data is stored in inter-related tables (see above)
Data access
One user at a time
Simultaneous access by multiple users with varied user roles
As we mentioned earlier, Entity Framework Core was born in 2016, but years have passed since then. By this time, we have witnessed several EF Core versions. For your convenience, we have compiled a table with brief information about them.
Version
Release Date
Description
EF Core 1.0
27 June 2016
First version after EF 6
EF Core 2.0
14 August 2017
Released with Visual Studio 2017 15.3 and ASP.NET Core 2.0
EF Core 3.0
23 September 2019
Released with Visual Studio 2019 16.3 and ASP.NET Core 3.0
EF Core 3.1
3 December 2019
Preferred long-term supported version until at least 3 December 2022.
EF Core 5.0.2
12 January 2021
EF Core 6.0
10 November 2021
Latest available version
At the point of writing this article, the latest available version is EF Core 6.0.7. Here is a short list of the changes in this version:
SQL Server temporal tables
Migration Bundles
Pre-convention model configuration
Compiled models
Improved performance on TechEmpower Fortunes
Improvements to scaffolding from an existing database
LINQ query enhancements
New mapping attributes
Model building improvements
DbContext factory improvements
Miscellaneous improvements
See the differences in code before and after formatting
SQL Complete helps you create, customize, and switch between formatting styles, share them with your colleagues, as well as manage and easily format SQL scripts by applying various formatting options.
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CREATE operation
The letter 'C' in the CRUD acronym refers to the CREATE operation that implies adding rows and columns to a table. In SQL Server, the INSERT statement can be used to create new records in the table. The syntax of the INSERT INTO statement would be:
INSERT INTO table_name (column1,column2,….)
VALUES (value1,value2,….)
Keep in mind that INTO is optional and can be omitted.
As you can see, you need to specify the name of the table to be populated with records and a list of columns along with their values. Now, let’s try to insert data into the Persons table.
CREATE query example
In the example, we add multiple rows to the Persons table by executing the INSERT INTO query:
INSERT INTO dbo.Persons
(
PersonID
,LastName
,FirstName
,Address
,City
)
VALUES
(1,'Conrad','Baumann','1388 Parkwood Loop, STE 31','Lansing'),
(2, 'Adam', 'Reyes', '56 Front Way', 'Salem'),
(3, 'Keira', 'Delacruz', '2676 E Prospect Hill Ave', 'Lincoln');
GO
READ operations
The letter 'R' in the CRUD acronym refers to the READ operation that retrieves data from the table using the SELECT statement. We can either fetch all data from the table or retrieve data filtered by the condition criteria in the WHERE clause.
The syntax of the SELECT statement would be:
- - syntax to retrieve all data from the table
SELECT * FROM table_name
- - syntax to retrieve filtered data from the table
SELECT * FROM table_name WHERE condition
READ operation example
After we inserted new records into the Persons table, we can retrieve data to make sure that the rows have been added to the table. To fetch data from the table, we execute the following statement:
SELECT * FROM AdventureWorks2019.dbo.Persons
The result shows that all values for each record in the table have been inserted.
Now, we change the query to view in the output only data that matches the condition in the WHERE clause. For example, we want to see information only about Conrad Baumann. To do that, run the following query:
SELECT
*
FROM AdventureWorks2019.dbo.Persons
WHERE PersonID = 1;
As you can see, the query returned the record according to the specified condition.
Let's go on to have a look at the CRUD UPDATE operation.
UPDATE operations
The letter 'U' in the CRUD acronym refers to the UPDATE operation that modifies the existing records in a SQL table. Thus, to make changes to data, you can use the UPDATE statement with the following syntax:
UPDATE table_name
SET column_1=value_1,column_2=value_2
WHERE condition;
UPDATE statement example
Suppose that Conrad Baumann moved to another place and we need to update his address. To modify values, we execute the UPDATE query:
UPDATE AdventureWorks2019.dbo.Persons
SET
Address = '1399 Firestone Drive'
WHERE
PersonID = 1
To check that the changes have been applied to the table, we execute the SELECT statement:
The result in the screenshot verifies that the specified row has been updated.
DELETE operations
The last letter 'D' in the CRUD acronym refers to data deletion. In SQL, it means deleting records from a SQL table by executing the DELETE statement. We can remove either all records or specific ones from the table. In the latter case, we can specify which rows to remove in the WHERE clause.
The syntax of the DELETE statement would be:
- - syntax to delete all records from the table
DELETE FROM table_name
- - syntax to delete specified records from the table
DELETE FROM table_name WHERE condition
Table_name is the table from which data should be deleted.
DELETE statement example
In our example, we need to remove information about Conrad Baumann because he has retired. To do that, we execute the statement with the WHERE clause in which we set a condition:
DELETE FROM AdventureWorks2019.dbo.Persons
WHERE
PersonID = 1;
GO
If we retrieve the updated data, we'll see that the specified record has been deleted from the table.
To remove all records from the Persons table, we execute the following DELETE query:
DELETE FROM AdventureWorks2019.dbo.Persons
This way we considered how CRUD operations work in SQL Server: In order to add, update, or remove data we needed to write statements each time. As you can notice, this may take a lot of time and effort. But that can be worked around and we’ll show how to do it.
Competitors vs. Delphi Programming
Understanding what kind of programming language is Delphi comes easier when you compare it with other popular languages.
Delphi vs. Java
Delphi vs .NET
Delphi vs C++
Delphi vs. JavaScript, Python, PHP, VBScript
dbForge SQL Tools
Enhance SSMS with essential add-ins and tools including Source Control. Boost any database task.
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Oracle Database users
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Software developer
Creates applications that use databases as their backgrounds
Database Administrator
Administers and maintains database
Data analyst
Analyzes data to identify important patterns and retrieve valuable business insights
Database developer
Designs and manages database schemas and all components
DevOps engineer
Configures, elaborates, and supports data pipelines
Data architect
Designs, develops, and handles data infrastructures
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