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INSERT - PostgreSQL Queries

The INSERT statement is used to insert new data into a table in a PostgreSQL database. In this tutorial, we'll discuss the syntax, example, output, explanation, use, important points, and summary of using the INSERT statement in PostgreSQL queries.

Syntax

INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
  • table_name: The name of the table to insert data into.
  • column1, column2, column3, ...: The names of the columns you want to insert data into.
  • value1, value2, value3, ...: The values you want to insert into the corresponding columns.

Example

Let's take a look at an example of using the INSERT statement in PostgreSQL queries:

INSERT INTO customers (customer_name, city, country, phone)
VALUES ('John Doe', 'New York', 'USA', '555-1234');

This query would insert a new row into the customers table, with values for the customer_name, city, country, and phone columns.

Explanation

In this example, we're inserting a new row into the customers table with data for the customer_name, city, country, and phone columns. The values for each column are provided in the VALUES clause, with each value corresponding to the column with the same position in the column list.

Use

The INSERT statement is used to insert new data into a table in a PostgreSQL database. It's commonly used when adding new records to a database table.

Important Points

  • The number of values in the VALUES clause must match the number of columns specified in the INSERT INTO clause.
  • The order of the values in the VALUES clause must match the order of the columns specified in the INSERT INTO clause.
  • The values must match the data type of the columns they are being inserted into.
  • PostgreSQL provides an INSERT INTO statement with a SELECT subquery that lets you insert data from an existing table into a new table.

Summary

In this tutorial, we discussed the INSERT statement in PostgreSQL queries. We covered the syntax, example, output, explanation, use, and important points of using the INSERT statement in PostgreSQL queries. With this knowledge, you can now use the INSERT statement to insert new data into a table in your PostgreSQL database.

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