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    <h3>Editing: PostgresBuilder.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Database\Schema;

class PostgresBuilder extends Builder
{
    /**
     * Create a database in the schema.
     *
     * @param  string  $name
     * @return bool
     */
    public function createDatabase($name)
    {
        return $this-&gt;connection-&gt;statement(
            $this-&gt;grammar-&gt;compileCreateDatabase($name, $this-&gt;connection)
        );
    }

    /**
     * Drop a database from the schema if the database exists.
     *
     * @param  string  $name
     * @return bool
     */
    public function dropDatabaseIfExists($name)
    {
        return $this-&gt;connection-&gt;statement(
            $this-&gt;grammar-&gt;compileDropDatabaseIfExists($name)
        );
    }

    /**
     * Determine if the given table exists.
     *
     * @param  string  $table
     * @return bool
     */
    public function hasTable($table)
    {
        [$schema, $table] = $this-&gt;parseSchemaAndTable($table);

        $table = $this-&gt;connection-&gt;getTablePrefix().$table;

        return count($this-&gt;connection-&gt;select(
            $this-&gt;grammar-&gt;compileTableExists(), [$schema, $table]
        )) &gt; 0;
    }

    /**
     * Drop all tables from the database.
     *
     * @return void
     */
    public function dropAllTables()
    {
        $tables = [];

        $excludedTables = $this-&gt;connection-&gt;getConfig('dont_drop') ?? ['spatial_ref_sys'];

        foreach ($this-&gt;getAllTables() as $row) {
            $row = (array) $row;

            $table = reset($row);

            if (! in_array($table, $excludedTables)) {
                $tables[] = $table;
            }
        }

        if (empty($tables)) {
            return;
        }

        $this-&gt;connection-&gt;statement(
            $this-&gt;grammar-&gt;compileDropAllTables($tables)
        );
    }

    /**
     * Drop all views from the database.
     *
     * @return void
     */
    public function dropAllViews()
    {
        $views = [];

        foreach ($this-&gt;getAllViews() as $row) {
            $row = (array) $row;

            $views[] = reset($row);
        }

        if (empty($views)) {
            return;
        }

        $this-&gt;connection-&gt;statement(
            $this-&gt;grammar-&gt;compileDropAllViews($views)
        );
    }

    /**
     * Drop all types from the database.
     *
     * @return void
     */
    public function dropAllTypes()
    {
        $types = [];

        foreach ($this-&gt;getAllTypes() as $row) {
            $row = (array) $row;

            $types[] = reset($row);
        }

        if (empty($types)) {
            return;
        }

        $this-&gt;connection-&gt;statement(
            $this-&gt;grammar-&gt;compileDropAllTypes($types)
        );
    }

    /**
     * Get all of the table names for the database.
     *
     * @return array
     */
    public function getAllTables()
    {
        return $this-&gt;connection-&gt;select(
            $this-&gt;grammar-&gt;compileGetAllTables((array) $this-&gt;connection-&gt;getConfig('schema'))
        );
    }

    /**
     * Get all of the view names for the database.
     *
     * @return array
     */
    public function getAllViews()
    {
        return $this-&gt;connection-&gt;select(
            $this-&gt;grammar-&gt;compileGetAllViews((array) $this-&gt;connection-&gt;getConfig('schema'))
        );
    }

    /**
     * Get all of the type names for the database.
     *
     * @return array
     */
    public function getAllTypes()
    {
        return $this-&gt;connection-&gt;select(
            $this-&gt;grammar-&gt;compileGetAllTypes()
        );
    }

    /**
     * Get the column listing for a given table.
     *
     * @param  string  $table
     * @return array
     */
    public function getColumnListing($table)
    {
        [$schema, $table] = $this-&gt;parseSchemaAndTable($table);

        $table = $this-&gt;connection-&gt;getTablePrefix().$table;

        $results = $this-&gt;connection-&gt;select(
            $this-&gt;grammar-&gt;compileColumnListing(), [$schema, $table]
        );

        return $this-&gt;connection-&gt;getPostProcessor()-&gt;processColumnListing($results);
    }

    /**
     * Parse the table name and extract the schema and table.
     *
     * @param  string  $table
     * @return array
     */
    protected function parseSchemaAndTable($table)
    {
        $table = explode('.', $table);

        if (is_array($schema = $this-&gt;connection-&gt;getConfig('schema'))) {
            if (in_array($table[0], $schema)) {
                return [array_shift($table), implode('.', $table)];
            }

            $schema = head($schema);
        }

        return [$schema ?: 'public', implode('.', $table)];
    }
}
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