Create SQL INSERT Script with values gathered from table

sql

sql-scripts

data-migration

sql-injections

byAnton Shumikhin·Dec 25, 2024

To generate SQL INSERT statement from existing data, use a SELECT query:

In MySQL:

-- Just imagine this script was automated by a SQL-writing robot 🤖
SELECT CONCAT('INSERT INTO my_table (col1, col2) VALUES (', col1, ', ', col2, ');') FROM my_table;

In SQL Server, use + and CAST:

-- Can't it concatenate itself? It's 2050, come on! 😅
SELECT 'INSERT INTO my_table (col1, col2) VALUES (' + CAST(col1 AS VARCHAR) + ', ' + CAST(col2 AS VARCHAR) + ');' FROM my_table;

Execute these scripts for desired INSERT commands!

Automating script generation with SSMS

Leverage SQL Server Management Studio (SSMS) for a smooth script generation journey. Navigate to Tasks/Generate Scripts... and select your table. Set "Types of data to script" to "Data only" for INSERTs. Don't forget to change USE DATABASE to your target database and enjoy the ride.

Mastering massive datasets

Handling table-sized data? Use the BCP (Bulk Copy Program) to circumvent troublesome memory issues. To fine-tune your string data, make use of functions like CONVERT or REPLACE to maintain script integrity.

Power-ups: tools and stored procedures

SSMS Tools Pack and SSMS export wizards can act as your assistant coders. For more sophisticated needs, check out the stored procedure offered by Mr. Vyas to gain full control over data migration.

SQL dialects are just flavors

MySQL, PostgreSQL, SQL Server - each has their own syntax specifics. MySQL prefers CONCAT, whereas PostgreSQL loves ||. Always use CAST when dealing with data types.

Shaping scripts for specific scenarios

Be it backups, data migration, or testing - align your INSERT script with its purpose. Keep an eye on data transformations, calibrations, and defaults.

Dynamic SQL: the adaptive approach

When a static script won't cut it, consider dynamic SQL. It's like a Swiss knife, adapting per situation. However, be sure to sanitize inputs to prevent SQL injections, otherwise it's like inviting a vampire into your house. 😄

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