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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * PostgreSQL specific SQL dialect. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2023-2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-01-25 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Setup\Migration\QueryBuilder\Dialect; |
| 21 | |
| 22 | use phpMyFAQ\Setup\Migration\QueryBuilder\DialectInterface; |
| 23 | |
| 24 | class PostgresDialect implements DialectInterface |
| 25 | { |
| 26 | public function getType(): string |
| 27 | { |
| 28 | return 'pgsql'; |
| 29 | } |
| 30 | |
| 31 | public function integer(): string |
| 32 | { |
| 33 | return 'INTEGER'; |
| 34 | } |
| 35 | |
| 36 | public function bigInteger(): string |
| 37 | { |
| 38 | return 'BIGINT'; |
| 39 | } |
| 40 | |
| 41 | public function smallInteger(): string |
| 42 | { |
| 43 | return 'SMALLINT'; |
| 44 | } |
| 45 | |
| 46 | public function varchar(int $length): string |
| 47 | { |
| 48 | return "VARCHAR({$length})"; |
| 49 | } |
| 50 | |
| 51 | public function text(): string |
| 52 | { |
| 53 | return 'TEXT'; |
| 54 | } |
| 55 | |
| 56 | public function longText(): string |
| 57 | { |
| 58 | return 'TEXT'; |
| 59 | } |
| 60 | |
| 61 | public function blob(): string |
| 62 | { |
| 63 | return 'BYTEA'; |
| 64 | } |
| 65 | |
| 66 | public function boolean(): string |
| 67 | { |
| 68 | return 'SMALLINT'; |
| 69 | } |
| 70 | |
| 71 | public function timestamp(): string |
| 72 | { |
| 73 | return 'TIMESTAMP'; |
| 74 | } |
| 75 | |
| 76 | public function date(): string |
| 77 | { |
| 78 | return 'DATE'; |
| 79 | } |
| 80 | |
| 81 | public function char(int $length): string |
| 82 | { |
| 83 | return "CHAR({$length})"; |
| 84 | } |
| 85 | |
| 86 | public function currentTimestamp(): string |
| 87 | { |
| 88 | return 'CURRENT_TIMESTAMP'; |
| 89 | } |
| 90 | |
| 91 | public function currentDate(): string |
| 92 | { |
| 93 | return 'CURRENT_DATE'; |
| 94 | } |
| 95 | |
| 96 | public function autoIncrement(string $columnName): string |
| 97 | { |
| 98 | return "{$columnName} SERIAL NOT NULL"; |
| 99 | } |
| 100 | |
| 101 | public function createTablePrefix(string $tableName, bool $ifNotExists = false): string |
| 102 | { |
| 103 | $exists = $ifNotExists ? 'IF NOT EXISTS ' : ''; |
| 104 | return "CREATE TABLE {$exists}{$tableName}"; |
| 105 | } |
| 106 | |
| 107 | public function createTableSuffix(): string |
| 108 | { |
| 109 | return ''; |
| 110 | } |
| 111 | |
| 112 | public function addColumn(string $tableName, string $columnName, string $type, ?string $after = null): string |
| 113 | { |
| 114 | // PostgreSQL doesn't support AFTER clause |
| 115 | return "ALTER TABLE {$tableName} ADD COLUMN {$columnName} {$type}"; |
| 116 | } |
| 117 | |
| 118 | public function modifyColumn(string $tableName, string $columnName, string $newType): string |
| 119 | { |
| 120 | return "ALTER TABLE {$tableName} ALTER COLUMN {$columnName} TYPE {$newType}"; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * @param string[] $columns |
| 125 | */ |
| 126 | public function createIndex(string $indexName, string $tableName, array $columns, bool $ifNotExists = false): string |
| 127 | { |
| 128 | $columnList = implode(', ', $columns); |
| 129 | $exists = $ifNotExists ? 'IF NOT EXISTS ' : ''; |
| 130 | return "CREATE INDEX {$exists}{$indexName} ON {$tableName} ({$columnList})"; |
| 131 | } |
| 132 | |
| 133 | public function dropIndex(string $indexName, string $tableName): string |
| 134 | { |
| 135 | return "DROP INDEX {$indexName}"; |
| 136 | } |
| 137 | |
| 138 | public function supportsColumnPositioning(): bool |
| 139 | { |
| 140 | return false; |
| 141 | } |
| 142 | |
| 143 | public function supportsCombinedAlter(): bool |
| 144 | { |
| 145 | return false; |
| 146 | } |
| 147 | |
| 148 | public function quoteIdentifier(string $identifier): string |
| 149 | { |
| 150 | return '"' . str_replace(search: '"', replace: '""', subject: $identifier) . '"'; |
| 151 | } |
| 152 | } |