vendor/illuminate/database/Schema/Grammars/SQLiteGrammar.php

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<?php

namespace Illuminate\Database\Schema\Grammars;

use RuntimeException;
use Illuminate\Support\Arr;
use Illuminate\Support\Fluent;
use Doctrine\DBAL\Schema\Index;
use Illuminate\Database\Connection;
use Illuminate\Database\Schema\Blueprint;

class SQLiteGrammar extends Grammar
{
    /**
     * The possible column modifiers.
     *
     * @var array
     */
    protected $modifiers = ['Nullable', 'Default', 'Increment'];

    /**
     * The columns available as serials.
     *
     * @var array
     */
    protected $serials = ['bigInteger', 'integer', 'mediumInteger', 'smallInteger', 'tinyInteger'];

    /**
     * Compile the query to determine if a table exists.
     *
     * @return string
     */
    public function compileTableExists()
    {
        return "select * from sqlite_master where type = 'table' and name = ?";
    }

    /**
     * Compile the query to determine the list of columns.
     *
     * @param  string  $table
     * @return string
     */
    public function compileColumnListing($table)
    {
        return 'pragma table_info('.$this->wrap(str_replace('.', '__', $table)).')';
    }

    /**
     * Compile a create table command.
     *
     * @param  \Illuminate\Database\Schema\Blueprint  $blueprint
     * @param  \Illuminate\Support\Fluent  $command
     * @return string
     */
    public function compileCreate(Blueprint $blueprint, Fluent $command)
    {
        return sprintf('%s table %s (%s%s%s)',
            $blueprint->temporary ? 'create temporary' : 'create',
            $this->wrapTable($blueprint),