Insert Into Table Sql
- 1 How do I INSERT data into a SQL table?
- 2 How do you INSERT into a table in MySQL?
- 3 How to insert varchar values in SQL?
- 4 How to insert values into table in SQL with WHERE clause?
- 5 What is batch INSERT in SQL?
- 6 How to insert data from one table to another table in MySQL?
- 7 How to insert table in MySQL with primary key?
How do I INSERT data into a SQL table?
Conclusion – If you want to add data to your SQL table, then you can use the INSERT statement. Here is the basic syntax for adding rows to your SQL table: INSERT INTO table_name (column1, column2, column3,etc) VALUES (value1, value2, value3, etc); The second line of code is where you will add the values for the rows.
It is important that the number of values matches with the number of columns specified or else you will get an error message. When you try to ignore column constraints in adding rows to the table, then you will receive an error message. If you want to add multiple rows to a table all at once, then you can use this syntax: INSERT INTO table_name (column1, column2, column3,etc) VALUES (value1, value2, value3, etc), (value1, value2, value3, etc), (value1, value2, value3, etc); You can use the SELECT and INSERT statement to copy rows from one SQL table to another.
This is the basic syntax: INSERT INTO table_name1 (columns) SELECT columns FROM table_name2; I hope you enjoyed this article and best of luck on your SQL journey. Learn to code for free. freeCodeCamp’s open source curriculum has helped more than 40,000 people get jobs as developers.
How to INSERT into table in SQL Server syntax?
Example – Using VALUES keyword – The simplest way to create a SQL Server INSERT query to list the values using the VALUES keyword. For example: INSERT INTO employees (employee_id, last_name, first_name) VALUES (10, ‘Anderson’, ‘Sarah’); This SQL Server INSERT statement would result in one record being inserted into the employees table.
- This new record would have an employee_id of 10, a last_name of ‘Anderson’, and a first_name of ‘Sarah’.
- You can also use this syntax to insert more than one record at a time.
- For example: INSERT INTO employees (employee_id, last_name, first_name) VALUES (10, ‘Anderson’, ‘Sarah’), (11, ‘Johnson’, ‘Dale’); This INSERT example shows how to insert more than one record using the VALUES keyword.
In this example, two records are inserted into the employees table. The first record has an employee_id of 10, a last_name of ‘Anderson’, and a first_name of ‘Sarah’. The second record has an employee_id of 11, a last_name of ‘Johnson’, and a first_name of ‘Dale’.
How do you INSERT into a table in MySQL?
MySQL INSERT – ignore errors when inserting data – In case you face errors or any unexpected behavior while executing the insertion of rows into the MySQL table, the statement execution is interrupted. Rows with valid and invalid values are not added to the table.
For example, execute the following query: INSERT INTO Products01 VALUES (’01’, ‘iPhoneX’, ‘Apple’, 35000, 3); This statement returns the error because the record with this ID already exists. Now, modify the statement with IGNORE. It allows you to insert rows with valid values but overpass the rows with invalid values.
INSERT IGNORE INTO Products01 VALUES (’01’, ‘iPhoneX’, ‘Apple’, 35000, 3); As a result, the script was executed without errors. MySQL will notify you that rows were added to the table.
How to insert data in single column in SQL?
To insert data into a single column in SQL, you can use the INSERT INTO statement and specify the name of the table and the name of the column in which you want to insert the data. For example, suppose you have a table employees with the following structure: id | name | email. – | – | –
How to create insert script in SQL Server with data?
Add values from multiple tables to the target table – 1. From the Database Explorer, select several tables and drag them to the Query Builder diagram.2. Switch to the Where tab to add a filtering condition. To do this, click Add and specify the condition. For example, the result should be filtered based on the criteria that SalesPersonID equals 280,
Select the SalesPersonID column as an operand. Set equals as a criteria operator. Enter 280 as a value.
3. On the diagram, select the columns you want to add to the target table.4. Change the query type from Select to Insert Results, To do this, right-click the diagram and select Change Type > Insert Results, 5. In the Choose Target Table to Insert Data to dialog that opens, select the database, schema, and table you want to insert data into, and click OK, Note The table, query fields, and column data types must match, while column names can differ. If they don’t match like in our example, then click the field and correct the order. As you can see, the query type has been changed. 6. Switch to the Text view to preview the SQL query script and execute the query. Watch the video to see how to create a SQL INSERT statement using the Query Builder tool.
How to insert varchar values in SQL?
How to Insert Records from Another Table – We can insert records into a table from another table using the SQL INSERT INTO SELECT statement. The following SQL statement inserts all records from the Persons table into the PersonsBackup table: INSERT INTO PersonsBackup SELECT * FROM Persons; In order to run this query, we need to create a new table called PersonsBackup : CREATE TABLE PersonsBackup ( PersonID int, LastName varchar(255), FirstName varchar(255), Address varchar(255), City varchar(255), PRIMARY KEY (PersonID) ); Now we can run the query to insert the records from the Persons table into PersonsBackup table: INSERT INTO PersonsBackup SELECT * FROM Persons; Here is the table with the data inserted:
How do I insert multiple columns in SQL?
In this article, you learned about the ALTER TABLE ADD COLUMN statement to add one or more columns to an existing table. To add multiple columns SQL, specify multiple columns to add after the ADD keyword and separate each column that you want to add using a comma. You can also modify or delete the specific columns using the ALTER TABLE statement. You can also use the ADD COLUMN clause to add columns to a table in SQL.
How to insert values into table in SQL with WHERE clause?
Copying specific rows from a table – INSERT INTO SELECT Statement – We can copy specific rows from a table to insert into another table by using the WHERE clause with the SELECT statement. We have to provide appropriate conditions in the WHERE clause to select specific rows.
How to fill SQL table with random data?
A simple script to create basic synthetic test data in T-SQL Photo by Mika Baumeister on Unsplash The following code creates a temp table with an identity column, an Integer column & a string column. We then use GO 1000 to create 1000 rows of data with a random string (a GUID) & a random number between 1 & 100.
– Create a temp table to hold some random data CREATE TABLE #Temp(ID INT IDENTITY(1,1), stringData VARCHAR(255), intData INT) GO – Add a GUID String & a Random Number between 1 & 100 INSERT #Temp SELECT CONVERT(varchar(255), NEWID()), FLOOR(RAND()*(100)+1); GO 1000 – run 1000 times for 1000 rows of data SELECT * FROM #Temp ORDER BY ID From here you can put whatever number you like for the GO statement to create more\less data.
And you can change the RAND call to create numbers in a different range. Clearly, below is a really basic example. If you have more sophisticated requirements I’d suggest a tool such as Redgate’s SQL Generator Seems to work ok. About the Author: Mike Knee is a Senior Azure Data Developer here at Version 1.
How to add data to empty table SQL?
How to Give a Value to the Selected Columns – Let’s say that you instead want to give a value to only a few columns – for example if you want to avoid manually setting the id so it’s done automatically. You would use the syntax below: INSERT INTO table_name(column1, column2.) VALUES (value1, value2.); The values will be assigned to the columns in the order in which they are written in the parenthesis.
- Let’s create a table, and then we will use INSERT to add the first few records to it.
- The code below will create a table named users that has 5 columns.
- We’ll have an id column that will be the PRIMARY KEY (the column that will always have unique values and allow us to uniquely identify a row), and then the name, age, state, and email columns.
CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, age INTEGER, state TEXT, email TEXT); Let’s add the first record to this table using the first syntax we looked at. We will add the user Paul with an id of 1, an age of 24, from the state of Michigan, and with an email address of [email protected] using the query below: INSERT INTO users VALUES (1, “Paul”, 24, “Michigan”, “pau[email protected]”); This will make the table look like this:
With this syntax you must have a value for each column or it will throw an error and not work. Now let’s add a couple other records, using the second kind of syntax seen above. INSERT INTO users (name, state) VALUES (“Molly”, “New Jersey”); INSERT INTO users (name, state, age) VALUES (“Robert”, “New York”, 19); In this case the first value is assigned to the first mentioned column, so “Molly” is assigned to the name column, and “New Jersey” to the state column.
Then for the other record, the column name is given the value of “Robert”, the column state gets “New York”, the column age is assigned 19, What happens to the columns that have not been assigned a value? The column with a type of INTEGER PRIMARY KEY AUTOINCREMENT is updated automatically, making sure that each row has a unique value.
When a value is not specified for other columns, they are assigned a value of NULL, Now the table looks like the below. Note that the id column has been updated to have unique values in each row, even if we have not explicitly assigned a value to it. The other columns that have not been assigned a value have a value of NULL,
When you first create a table in your database, it is empty. This article explains how to add records to a table, which is a good place to start to create a database.
How can we insert data into a view?
You can insert rows into a view only if the view is modifiable and contains no derived columns. The reason for the second restriction is that an inserted row must provide values for all columns, but the database server cannot tell how to distribute an inserted value through an expression.
How to INSERT large amounts of data SQL?
INSERT-SELECT-UNION query to insert multiple records – In the above section, we got to know that INSERT INTO query injects multiple records. But, if we observer the output of it, we get to know that the clause ‘INSERT INTO’ is repeated many times. Thus, we can use INSERT-SELECT-UNION query to insert data into multiple rows of the table.
Which is faster SELECT or INSERT?
Conclusions – There are no minimally logged operations in the FULL recovery model. As the ‘SELECT INTO’ creates the destination table, it exclusively owns that table and is quicker compared to the ‘INSERT SELECT’. Because the ‘INSERT SELECT’ inserts data into an existing table, it is slower and requires more resources due to the higher number of logical reads and greater transaction log usage.
What is batch INSERT in SQL?
Batch inserts is the ability to send a set of inserts to a single table, once to the database as a single insert statement instead of individual statements. This method improves latency, and data insert times. These improvements occur not only with batch processing, loading large quantities of data, but also with OLTP workloads. The following is an example of regular inserts: INSERT INTO EJB3.OrderLine (OrderId, LineNumber, ProductId, Quantity, Price, ExtendedPrice) VALUES(“67ef590kalk4568901thbn7190akioe1”, 1, 25, 10, 1.00, 10.00); INSERT INTO EJB3.OrderLine (OrderId, LineNumber, ProductId, Quantity, Price, ExtendedPrice) VALUES(“67ef590kalk4568901thbn7190akioe1”, 2, 16, 1, 1.59, 1.59); INSERT INTO EJB3.OrderLine (OrderId, LineNumber, ProductId, Quantity, Price, ExtendedPrice) VALUES(“67ef590kalk4568901thbn7190akioe1”, 3, 55, 5, 25.00, 125.00); INSERT INTO EJB3.OrderLine (OrderId, LineNumber, ProductId, Quantity, Price, ExtendedPrice) VALUES(“67ef590kalk4568901thbn7190akioe1”, 4, 109, 1, 29.98, 29.98); The following is an example of batch inserts: INSERT INTO EJB3.OrderLine (OrderId, LineNumber, ProductId, Quantity, Price, ExtendedPrice) VALUES(“67ef590kalk4568901thbn7190akioe1”, 1, 25, 10, 1.00, 10.00), (“67ef590kalk4568901thbn7190akioe1”, 2, 16, 1, 1.59, 1.59), (“67ef590kalk4568901thbn7190akioe1”, 3, 55, 5, 25.00, 125.00), (“67ef590kalk4568901thbn7190akioe1”, 4, 109, 1, 29.98, 29.98); Before discussing how to enable this behavior from an EJB 3 application using Hibernate, the example data model above needs further explanation. The primary key of the EJB3.OrderLine table is the OrderId, and the LineNumber. Originally, the entity Order and OrderLine had a MySQL auto increment column as the OrderId, and the primary key of Order, and the first half of the primary key of the OrderLine entity. The SQL syntax for normal inserts is unaffected by this, as Hibernate does not need to know the primary key value ahead of time. In fact, the order in which those SQL statements are sent to the database does not matter. With batch inserts, since we want to send them all over as one set, and eventually as one SQL statement, Hibernate needs to know the primary key ahead of time. This is for the simple reason that Hibernate pushes each “persist” request from an EJB 3 application into an action queue, and there may be inserts to various tables interleaved in a single transaction. Hibernate has to sort the inserts by primary key in order to batch them at all. An auto increment column value is only known after the insert, so this will fail. Therefore the model has to use a primary key that can be known prior to being inserted into the database. A generated value can be used as the primary key, but the generation strategy used must allow it to be retrieved via JDBC before the inserts are flushed to the database. IDENTITY cannot be used as a primary key generation strategy, but TABLE, SEQUENCE and UUID can be used. It’s important to know that when Hibernate performs sorting to get the insert statements batched together it uses the hash code value of the entity so it’s imperative that the hash code method is properly defined. UUID is a Hibernate-specific key generation technique and is not in the JPA or JPA 2 specification so code will not be portable if it is used. The following code sample illustrates batch processing. It’s an extract of the Order performance application, and inserts reference data that is needed for the test runs. @TransactionTimeout(4800) public void createInventories(int batchSize) throws CreateDataException int rowsToFlush = 0, totalRows = 0; Random quantity = new Random(System.currentTimeMillis()); List products = productManager.findAllProducts(); List distributionCenters = distributionCenterManager.findAllDistributionCenters(); InventoryPK inventoryPk = null; Inventory inventory = null; for(Product product: products) } } } return; } The method is annotated with a TransactionTimeout annotation that specifies a longer transaction timeout value, because the default of 300 seconds is too short in this instance. The method takes a single parameter called batchSize which allows tuning of the batch insert size. This is good practice because it allows different batch insert sizes to be tested to optimize the results. After creating the inventory entity, persist is called on the entity manager. The code that follows is significant in demonstrating the batch processing method. After calling persist a check is made to confirm that the number of entities or rows persisted is equal to the batchSize parameter. If so, the entity manager’s flush method is called. Since this is a single large transaction, the normal Hibernate behavior is to flush everything on the transaction commit, or when the JDBC batch size has been reached. To flush a specific number of rows, instead of letting Hibernate decide, an explicit call to flush is made. Note that Hibernate will flush at two intervals: at the commit of the transaction and when it gets to the JDBC batch size parameter. So there’s no need to explicitly call flush at all, instead set the JDBC batch size parameter and avoid the batch size parameter altogether. In this case the batch size parameter was explicitly set to the maximum once, then different batch sizes less than or equal to the JDBC batch size parameter were tested. This could be simpler, but the alternative would be to change the Hibernate configuration and redeploy the application in between tests. The Hibernate JDBC batch size parameter (hibernate.jdbc.batch_size) is specified in the properties values of persistence.xml for the persistence unit of the application entities. The parameter hibernate.order_inserts tells Hibernate to order the inserts by the primary key (using the entities hash code value actually). If entities use a generated primary key, you need to make sure that fetching generated key values is enabled, but this is enabled in Hibernate by default. Below is an extract from the configuration file with both these parameters set: org.hibernate.ejb.HibernatePersistence java:/MySqlDS The following code sample illustrates OLTP. It creates an Order which contains OrderLines (has-a relationship in the object model). The OrderLine entities can be batch inserted, as what is passed into this method is the Order object with its OrderLine collection. public Order createOrder(Customer customer, List orderLines, BigDecimal totalOrderAmount) Address shippingAddress = new Address(); shippingAddress.setAddressLine1(customer.getAddressLine1()); shippingAddress.setAddressLine2(addressLine2); shippingAddress.setCity(customer.getCity()); shippingAddress.setState(customer.getState()); shippingAddress.setZipCode(customer.getZipCode()); shippingAddress.setZipCodePlusFour(customer.getZipCodePlusFour()); Order newOrder = new Order(); newOrder.setCustomerId(customer.getCustomerId()); newOrder.setDistributionCenterId(customer.getDistributionCenterId()); newOrder.setShippingAddressLine1(shippingAddress.getAddressLine1()); newOrder.setShippingAddressLine2(shippingAddress.getAddressLine2()); newOrder.setShippingCity(shippingAddress.getCity()); newOrder.setShippingState(shippingAddress.getState()); newOrder.setShippingZipCode(shippingAddress.getZipCode()); newOrder.setShippingZipCodePlusFour(shippingAddress.getZipCodePlusFour()); newOrder.setTotalOrderAmount(totalOrderAmount); newOrder.setOrderDate(new Date()); newOrder.setCustomer(customer); entityManager.persist(newOrder); String orderId = newOrder.getOrderId(); for (OrderLine orderLine: orderLines) newOrder.setOrderLines(orderLines); entityManager.persist(newOrder); return newOrder; } Note there is no call to the entity manager’s flush method. Everything is accomplished through the persistence unit’s Hibernate configuration, which is as follows: org.hibernate.ejb.HibernatePersistence java:/MySqlDS The same two configuration parameters for Hibernate are used, where the inserts are ordered, and the JDBC batch size is set. In this case, an order that has up to 500 line items could be batched. Because OrderLine entities are persisted and the transaction will commit upon exiting the createOrder method, there is no need to do anything further. Of course, the data model changes to use a generated key strategy that can be known prior to the inserts being executed is important. Finally, there’s a database-specific configuration parameter required to make this work just as you want. With the MySQL JDBC driver a connection property must be set to enable the driver to detect inserts to the same table that can be combined into a single insert statement: rewriteBatchedStatements. Since Hibernate will send the inserts it’s batching using the JDBC method executeBatch, the JDBC driver can rewrite the multiple insert statements into a single insert statement as illustrated at the top of the article. This property must be specified with a value of true, and you can do this through setting the connection property in the data source XML file for MySQL as such: MySqlDS jdbc:mysql://localhost:3306/EJB3 com.mysql.jdbc.Driver username password org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter 400 450
How to insert data from one table to another table in MySQL?
MySQL INSERT INTO SELECT Statement
The INSERT INTO SELECT statement copies data from one table and inserts it into another table.The INSERT INTO SELECT statement requires that the data types in source and target tables matches. Note: The existing records in the target table are unaffected.
How to insert table in MySQL with primary key?
Primary Key Using ALTER TABLE Statement – This statement allows us to do the modification into the existing table. When the table does not have a primary key, this statement is used to add the primary key to the column of an existing table.
- Following are the syntax of the ALTER TABLE statement to create a primary key in MySQL:
- ALTER TABLE table_name ADD PRIMARY KEY(column_list);
- The following statement creates a table ” Persons ” that have no primary key column into the table definition.
- mysql> CREATE TABLE Persons ( Person_ID int NOT NULL, Name varchar(45), Age int, City varchar(25) );
- After creating a table, if we want to add a primary key to this table, we need to execute the ALTER TABLE statement as below:
- mysql> ALTER TABLE Persons ADD PRIMARY KEY(Person_ID);
- We can see the output where both statements executed successfully.
If the table needs to add the primary key into a table that already has data into the column, then it must be sure to the column does not contains duplicates or null values.