How do I add data to two tables in an SQL database at the same time?

Tools Material: Management Studio.

1. First, on the desktop, click on the "Management Studio" icon.

2. Then on the window, click the "New Query" button in the toolbar in the upper left corner.

3. In addition, on the window, enter the SQL statement "update test2 set grade = 100, no = 20" to modify multiple data in a table at the same time.

4. Secondly, on the window, click the "Execute" button in the upper left toolbar.

5. Finally, on the window, it shows that multiple data in a table have been modified at the same time.

1. First prepare two data tables, as shown in the figure below, and the structure needs to be the same.

2. Then insert some data into the first data table.

3. Then we open the second data table, then you see that there is no data in the second one, and we need to insert the first one.

4. Then write the insert statement, note that this time you use select directly after the insert to get the data.

5. Then we can see that there is data in the second data table.

6. Finally, when selecting and querying data, you can also use where to filter.

Tools Material: Management Studio.

1. First, on the desktop, click on the "Management Studio" icon.

2. Then on the window, click the "New Query" button in the toolbar in the upper left corner.

3. In addition, on the window, enter the SQL statement to modify multiple data in a table at the same time.

update test2 set grade = 100, no = 20”。

4. Secondly, on the window, click the "Execute" button in the upper left toolbar.

5. Finally, on the window, it shows that multiple data in a table have been modified at the same time.

Oracle statement to modify a single row of data, as follows:

update table name set a=new value, b=new value, c=new value, d=new value where id=value of the id to be modified;

1 First prepare two data tables, as shown in the figure below, with the same structure.

2 Then insert some data into the first data table.

3 Then we open the second data table, you can see there is no data in the second table. We need to insert the data in the first one.

4 Next, write an insert statement, note that this time you use select to get the data directly after the insert.

5 Then we can see the data in the second data table.

6 Finally, you can use where to filter the data when selecting a query.

Hello players, please take a screenshot of your table and upload part of the data of each table to the problem to facilitate the solution of the problem.

First method:

Use three SQL statements to complete the insertion, that is, before inserting into, use the select project name into :

Variable from another table where id=your id here, the same goes for the latter one.

The second method:

Insert the project ID and assignee ID directly into the table you inserted, and use it when displaying.

select project name, name from Table 1, Table 2, Table 3 where Table 1Project ID = Table 2Project ID and Table 1Name ID = Table 3Name ID

Here Table 1 is the inserted **, Table 2 is the one that includes the project ID and project name, and Table 3 is the one that includes the name ID and name.

Convert(datetime variable) is often used.

Note: Variables are properties underneath that control.

The client does not know what the IP address of the hostname corresponds to at first. Therefore, the hostname needs to be resolved to the corresponding IP address, so that the client can connect to the server. This hostname can be resolved through the host file or the DNS server.

Normally, the client first queries the host file on the local machine to see if there is a corresponding record.

If not, then look for the DNS server that exists in the network and ask for resolution.

The second search line Lubu: the client contacts the server.

When the client obtains the IP address of the server, it contacts the server.

The client sends the username and password to the server. Note that the client does not tell the server the name of the service at this time. This is because by default, only one App Service will be installed on the server.

Therefore, as long as the client tells the server the username and password, the database server will allow the user to connect to a unique application service.

Therefore, if you want users to connect to different Oracle database service bands on the same host, the database needs to be able to identify which application service the band client needs to connect to, that is, the client needs to be able to pass the name of the application service to the server.