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Migrating from SQLite3 to MySQL: A Quick and Easy Solution
When transitioning from SQLite3 to MySQL, finding a reliable and efficient conversion tool can be challenging. While various approaches exist, many require complex manual manipulations and provide no guarantee of accuracy. This can raise concerns about data integrity and compatibility issues.
Differences in SQL Syntax
When it comes to syntax, SQLite3 and MySQL exhibit several differences that necessitate careful consideration during migration. These include:
A Practical Conversion Script
To address these discrepancies and simplify the migration process, a basic Perl script can be employed. However, it is essential to note that its effectiveness may vary depending on the specific dataset:
#! /usr/bin/perl while ($line = <>){ if (($line !~ /BEGIN TRANSACTION/) && ($line !~ /COMMIT/) && ($line !~ /sqlite_sequence/) && ($line !~ /CREATE UNIQUE INDEX/)){ if ($line =~ /CREATE TABLE \"([a-z_]*)\"(.*)/i){ $name = ; $sub = ; $sub =~ s/\"//g; $line = "DROP TABLE IF EXISTS $name;\nCREATE TABLE IF NOT EXISTS $name$sub\n"; } elsif ($line =~ /INSERT INTO \"([a-z_]*)\"(.*)/i){ $line = "INSERT INTO \n"; $line =~ s/\"/\\"/g; $line =~ s/\"/\'/g; }else{ $line =~ s/\'\'/\\'/g; } $line =~ s/([^\'])\'t\'(.)/THIS_IS_TRUE/g; $line =~ s/THIS_IS_TRUE/1/g; $line =~ s/([^\'])\'f\'(.)/THIS_IS_FALSE/g; $line =~ s/THIS_IS_FALSE/0/g; $line =~ s/AUTOINCREMENT/AUTO_INCREMENT/g; print $line; } }
This script takes into account various syntax variations and performs the following transformations:
While this script caters to specific dataset nuances, it serves as a customizable starting point for achieving successful SQLite3 to MySQL migration.
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