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HomeDatabaseMysql TutorialIs There a Universal SQL Syntax for Inserting Values from a Subquery?

Is There a Universal SQL Syntax for Inserting Values from a Subquery?

Cross-Database SQL: Inserting Data from Subqueries

Moving data between tables is a fundamental database task. However, SQL syntax for this can differ significantly between database systems. This article explores a standardized approach for inserting values from a subquery, ensuring compatibility across various database engines.

A Universal SQL Solution

The ANSI SQL standard provides a consistent method for inserting data from a subquery:

INSERT INTO table1 (column1)
SELECT col1
FROM table2;

This approach is widely supported by numerous database systems, including:

  • Oracle
  • Microsoft SQL Server
  • MySQL
  • PostgreSQL
  • SQLite v3
  • Teradata
  • DB2
  • Sybase
  • Vertica
  • HSQLDB
  • H2
  • AWS Redshift
  • SAP HANA
  • Google Spanner

Practical Example

To populate the column1 field in table1 with data from the col1 field of table2, use the following query:

INSERT INTO table1 (column1)
SELECT col1
FROM table2;

This efficiently creates new entries in table1, mirroring the col1 values from table2.

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