mirror of
https://github.com/yiisoft/yii2.git
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540 lines
22 KiB
PHP
540 lines
22 KiB
PHP
<?php
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/**
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* @link https://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license https://www.yiiframework.com/license/
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*/
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namespace yii\db\pgsql;
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use yii\base\InvalidArgumentException;
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use yii\db\Constraint;
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use yii\db\Expression;
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use yii\db\ExpressionInterface;
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use yii\db\Query;
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use yii\db\PdoValue;
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use yii\helpers\StringHelper;
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/**
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* QueryBuilder is the query builder for PostgreSQL databases.
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*
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* @author Gevik Babakhani <gevikb@gmail.com>
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* @since 2.0
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*/
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class QueryBuilder extends \yii\db\QueryBuilder
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{
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/**
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* Defines a UNIQUE index for [[createIndex()]].
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* @since 2.0.6
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*/
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const INDEX_UNIQUE = 'unique';
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/**
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* Defines a B-tree index for [[createIndex()]].
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* @since 2.0.6
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*/
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const INDEX_B_TREE = 'btree';
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/**
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* Defines a hash index for [[createIndex()]].
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* @since 2.0.6
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*/
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const INDEX_HASH = 'hash';
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/**
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* Defines a GiST index for [[createIndex()]].
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* @since 2.0.6
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*/
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const INDEX_GIST = 'gist';
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/**
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* Defines a GIN index for [[createIndex()]].
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* @since 2.0.6
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*/
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const INDEX_GIN = 'gin';
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/**
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* @var array mapping from abstract column types (keys) to physical column types (values).
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*/
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public $typeMap = [
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Schema::TYPE_PK => 'serial NOT NULL PRIMARY KEY',
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Schema::TYPE_UPK => 'serial NOT NULL PRIMARY KEY',
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Schema::TYPE_BIGPK => 'bigserial NOT NULL PRIMARY KEY',
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Schema::TYPE_UBIGPK => 'bigserial NOT NULL PRIMARY KEY',
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Schema::TYPE_CHAR => 'char(1)',
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Schema::TYPE_STRING => 'varchar(255)',
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Schema::TYPE_TEXT => 'text',
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Schema::TYPE_TINYINT => 'smallint',
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Schema::TYPE_SMALLINT => 'smallint',
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Schema::TYPE_INTEGER => 'integer',
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Schema::TYPE_BIGINT => 'bigint',
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Schema::TYPE_FLOAT => 'double precision',
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Schema::TYPE_DOUBLE => 'double precision',
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Schema::TYPE_DECIMAL => 'numeric(10,0)',
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Schema::TYPE_DATETIME => 'timestamp(0)',
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Schema::TYPE_TIMESTAMP => 'timestamp(0)',
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Schema::TYPE_TIME => 'time(0)',
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Schema::TYPE_DATE => 'date',
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Schema::TYPE_BINARY => 'bytea',
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Schema::TYPE_BOOLEAN => 'boolean',
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Schema::TYPE_MONEY => 'numeric(19,4)',
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Schema::TYPE_JSON => 'jsonb',
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];
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/**
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* {@inheritdoc}
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*/
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protected function defaultConditionClasses()
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{
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return array_merge(parent::defaultConditionClasses(), [
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'ILIKE' => 'yii\db\conditions\LikeCondition',
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'NOT ILIKE' => 'yii\db\conditions\LikeCondition',
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'OR ILIKE' => 'yii\db\conditions\LikeCondition',
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'OR NOT ILIKE' => 'yii\db\conditions\LikeCondition',
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]);
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}
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/**
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* {@inheritdoc}
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*/
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protected function defaultExpressionBuilders()
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{
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return array_merge(parent::defaultExpressionBuilders(), [
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'yii\db\ArrayExpression' => 'yii\db\pgsql\ArrayExpressionBuilder',
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'yii\db\JsonExpression' => 'yii\db\pgsql\JsonExpressionBuilder',
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]);
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}
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/**
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* Builds a SQL statement for creating a new index.
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* @param string $name the name of the index. The name will be properly quoted by the method.
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* @param string $table the table that the new index will be created for. The table name will be properly quoted by the method.
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* @param string|array $columns the column(s) that should be included in the index. If there are multiple columns,
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* separate them with commas or use an array to represent them. Each column name will be properly quoted
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* by the method, unless a parenthesis is found in the name.
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* @param bool|string $unique whether to make this a UNIQUE index constraint. You can pass `true` or [[INDEX_UNIQUE]] to create
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* a unique index, `false` to make a non-unique index using the default index type, or one of the following constants to specify
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* the index method to use: [[INDEX_B_TREE]], [[INDEX_HASH]], [[INDEX_GIST]], [[INDEX_GIN]].
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* @return string the SQL statement for creating a new index.
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* @see https://www.postgresql.org/docs/8.2/sql-createindex.html
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*/
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public function createIndex($name, $table, $columns, $unique = false)
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{
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if ($unique === self::INDEX_UNIQUE || $unique === true) {
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$index = false;
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$unique = true;
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} else {
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$index = $unique;
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$unique = false;
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}
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return ($unique ? 'CREATE UNIQUE INDEX ' : 'CREATE INDEX ') .
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$this->db->quoteTableName($name) . ' ON ' .
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$this->db->quoteTableName($table) .
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($index !== false ? " USING $index" : '') .
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' (' . $this->buildColumns($columns) . ')';
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}
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/**
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* Builds a SQL statement for dropping an index.
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* @param string $name the name of the index to be dropped. The name will be properly quoted by the method.
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* @param string $table the table whose index is to be dropped. The name will be properly quoted by the method.
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* @return string the SQL statement for dropping an index.
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*/
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public function dropIndex($name, $table)
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{
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if (strpos($table, '.') !== false && strpos($name, '.') === false) {
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if (strpos($table, '{{') !== false) {
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$table = preg_replace('/\\{\\{(.*?)\\}\\}/', '\1', $table);
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list($schema, $table) = explode('.', $table);
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if (strpos($schema, '%') === false)
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$name = $schema.'.'.$name;
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else
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$name = '{{'.$schema.'.'.$name.'}}';
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} else {
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list($schema) = explode('.', $table);
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$name = $schema.'.'.$name;
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}
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}
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return 'DROP INDEX ' . $this->db->quoteTableName($name);
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}
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/**
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* Builds a SQL statement for renaming a DB table.
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* @param string $oldName the table to be renamed. The name will be properly quoted by the method.
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* @param string $newName the new table name. The name will be properly quoted by the method.
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* @return string the SQL statement for renaming a DB table.
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*/
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public function renameTable($oldName, $newName)
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{
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return 'ALTER TABLE ' . $this->db->quoteTableName($oldName) . ' RENAME TO ' . $this->db->quoteTableName($newName);
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}
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/**
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* Creates a SQL statement for resetting the sequence value of a table's primary key.
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* The sequence will be reset such that the primary key of the next new row inserted
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* will have the specified value or 1.
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* @param string $tableName the name of the table whose primary key sequence will be reset
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* @param mixed $value the value for the primary key of the next new row inserted. If this is not set,
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* the next new row's primary key will have a value 1.
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* @return string the SQL statement for resetting sequence
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* @throws InvalidArgumentException if the table does not exist or there is no sequence associated with the table.
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*/
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public function resetSequence($tableName, $value = null)
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{
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$table = $this->db->getTableSchema($tableName);
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if ($table !== null && $table->sequenceName !== null) {
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// c.f. https://www.postgresql.org/docs/8.1/functions-sequence.html
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$sequence = $this->db->quoteTableName($table->sequenceName);
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$tableName = $this->db->quoteTableName($tableName);
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if ($value === null) {
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$key = $this->db->quoteColumnName(reset($table->primaryKey));
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$value = "(SELECT COALESCE(MAX({$key}),0) FROM {$tableName})+1";
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} else {
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$value = (int) $value;
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}
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return "SELECT SETVAL('$sequence',$value,false)";
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} elseif ($table === null) {
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throw new InvalidArgumentException("Table not found: $tableName");
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}
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throw new InvalidArgumentException("There is not sequence associated with table '$tableName'.");
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}
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/**
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* Builds a SQL statement for enabling or disabling integrity check.
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* @param bool $check whether to turn on or off the integrity check.
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* @param string $schema the schema of the tables.
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* @param string $table the table name.
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* @return string the SQL statement for checking integrity
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*/
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public function checkIntegrity($check = true, $schema = '', $table = '')
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{
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$enable = $check ? 'ENABLE' : 'DISABLE';
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$schema = $schema ?: $this->db->getSchema()->defaultSchema;
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$tableNames = $table ? [$table] : $this->db->getSchema()->getTableNames($schema);
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$viewNames = $this->db->getSchema()->getViewNames($schema);
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$tableNames = array_diff($tableNames, $viewNames);
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$command = '';
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foreach ($tableNames as $tableName) {
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$tableName = $this->db->quoteTableName("{$schema}.{$tableName}");
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$command .= "ALTER TABLE $tableName $enable TRIGGER ALL; ";
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}
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// enable to have ability to alter several tables
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$this->db->getMasterPdo()->setAttribute(\PDO::ATTR_EMULATE_PREPARES, true);
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return $command;
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}
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/**
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* Builds a SQL statement for truncating a DB table.
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* Explicitly restarts identity for PGSQL to be consistent with other databases which all do this by default.
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* @param string $table the table to be truncated. The name will be properly quoted by the method.
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* @return string the SQL statement for truncating a DB table.
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*/
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public function truncateTable($table)
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{
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return 'TRUNCATE TABLE ' . $this->db->quoteTableName($table) . ' RESTART IDENTITY';
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}
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/**
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* Builds a SQL statement for changing the definition of a column.
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* @param string $table the table whose column is to be changed. The table name will be properly quoted by the method.
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* @param string $column the name of the column to be changed. The name will be properly quoted by the method.
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* @param string $type the new column type. The [[getColumnType()]] method will be invoked to convert abstract
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* column type (if any) into the physical one. Anything that is not recognized as abstract type will be kept
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* in the generated SQL. For example, 'string' will be turned into 'varchar(255)', while 'string not null'
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* will become 'varchar(255) not null'. You can also use PostgreSQL-specific syntax such as `SET NOT NULL`.
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* @return string the SQL statement for changing the definition of a column.
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*/
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public function alterColumn($table, $column, $type)
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{
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$columnName = $this->db->quoteColumnName($column);
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$tableName = $this->db->quoteTableName($table);
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// https://github.com/yiisoft/yii2/issues/4492
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// https://www.postgresql.org/docs/9.1/sql-altertable.html
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if (preg_match('/^(DROP|SET|RESET)\s+/i', $type)) {
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return "ALTER TABLE {$tableName} ALTER COLUMN {$columnName} {$type}";
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}
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$type = 'TYPE ' . $this->getColumnType($type);
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$multiAlterStatement = [];
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$constraintPrefix = preg_replace('/[^a-z0-9_]/i', '', $table . '_' . $column);
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if (preg_match('/\s+DEFAULT\s+(["\']?\w*["\']?)/i', $type, $matches)) {
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$type = preg_replace('/\s+DEFAULT\s+(["\']?\w*["\']?)/i', '', $type);
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$multiAlterStatement[] = "ALTER COLUMN {$columnName} SET DEFAULT {$matches[1]}";
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} else {
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// safe to drop default even if there was none in the first place
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$multiAlterStatement[] = "ALTER COLUMN {$columnName} DROP DEFAULT";
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}
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$type = preg_replace('/\s+NOT\s+NULL/i', '', $type, -1, $count);
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if ($count) {
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$multiAlterStatement[] = "ALTER COLUMN {$columnName} SET NOT NULL";
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} else {
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// remove additional null if any
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$type = preg_replace('/\s+NULL/i', '', $type);
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// safe to drop not null even if there was none in the first place
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$multiAlterStatement[] = "ALTER COLUMN {$columnName} DROP NOT NULL";
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}
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if (preg_match('/\s+CHECK\s+\((.+)\)/i', $type, $matches)) {
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$type = preg_replace('/\s+CHECK\s+\((.+)\)/i', '', $type);
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$multiAlterStatement[] = "ADD CONSTRAINT {$constraintPrefix}_check CHECK ({$matches[1]})";
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}
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$type = preg_replace('/\s+UNIQUE/i', '', $type, -1, $count);
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if ($count) {
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$multiAlterStatement[] = "ADD UNIQUE ({$columnName})";
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}
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// add what's left at the beginning
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array_unshift($multiAlterStatement, "ALTER COLUMN {$columnName} {$type}");
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return 'ALTER TABLE ' . $tableName . ' ' . implode(', ', $multiAlterStatement);
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}
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/**
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* {@inheritdoc}
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*/
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public function insert($table, $columns, &$params)
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{
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return parent::insert($table, $this->normalizeTableRowData($table, $columns), $params);
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}
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/**
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* {@inheritdoc}
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* @see https://www.postgresql.org/docs/9.5/static/sql-insert.html#SQL-ON-CONFLICT
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* @see https://stackoverflow.com/questions/1109061/insert-on-duplicate-update-in-postgresql/8702291#8702291
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*/
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public function upsert($table, $insertColumns, $updateColumns, &$params)
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{
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$insertColumns = $this->normalizeTableRowData($table, $insertColumns);
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if (!is_bool($updateColumns)) {
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$updateColumns = $this->normalizeTableRowData($table, $updateColumns);
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}
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if (version_compare($this->db->getServerVersion(), '9.5', '<')) {
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return $this->oldUpsert($table, $insertColumns, $updateColumns, $params);
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}
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return $this->newUpsert($table, $insertColumns, $updateColumns, $params);
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}
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/**
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* [[upsert()]] implementation for PostgreSQL 9.5 or higher.
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* @param string $table
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* @param array|Query $insertColumns
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* @param array|bool $updateColumns
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* @param array $params
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* @return string
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*/
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private function newUpsert($table, $insertColumns, $updateColumns, &$params)
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{
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$insertSql = $this->insert($table, $insertColumns, $params);
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list($uniqueNames, , $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns);
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if (empty($uniqueNames)) {
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return $insertSql;
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}
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if ($updateNames === []) {
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// there are no columns to update
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$updateColumns = false;
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}
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if ($updateColumns === false) {
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return "$insertSql ON CONFLICT DO NOTHING";
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}
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if ($updateColumns === true) {
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$updateColumns = [];
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foreach ($updateNames as $name) {
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$updateColumns[$name] = new Expression('EXCLUDED.' . $this->db->quoteColumnName($name));
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}
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}
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list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params);
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return $insertSql . ' ON CONFLICT (' . implode(', ', $uniqueNames) . ') DO UPDATE SET ' . implode(', ', $updates);
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}
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/**
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* [[upsert()]] implementation for PostgreSQL older than 9.5.
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* @param string $table
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* @param array|Query $insertColumns
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* @param array|bool $updateColumns
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* @param array $params
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* @return string
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*/
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private function oldUpsert($table, $insertColumns, $updateColumns, &$params)
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{
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/** @var Constraint[] $constraints */
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list($uniqueNames, $insertNames, $updateNames) = $this->prepareUpsertColumns($table, $insertColumns, $updateColumns, $constraints);
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if (empty($uniqueNames)) {
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return $this->insert($table, $insertColumns, $params);
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}
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if ($updateNames === []) {
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// there are no columns to update
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$updateColumns = false;
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}
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/** @var Schema $schema */
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$schema = $this->db->getSchema();
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if (!$insertColumns instanceof Query) {
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$tableSchema = $schema->getTableSchema($table);
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$columnSchemas = $tableSchema !== null ? $tableSchema->columns : [];
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foreach ($insertColumns as $name => $value) {
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// NULLs and numeric values must be type hinted in order to be used in SET assigments
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// NVM, let's cast them all
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if (isset($columnSchemas[$name])) {
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$phName = self::PARAM_PREFIX . count($params);
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$params[$phName] = $value;
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$insertColumns[$name] = new Expression("CAST($phName AS {$columnSchemas[$name]->dbType})");
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}
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}
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}
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list(, $placeholders, $values, $params) = $this->prepareInsertValues($table, $insertColumns, $params);
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$updateCondition = ['or'];
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$insertCondition = ['or'];
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$quotedTableName = $schema->quoteTableName($table);
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foreach ($constraints as $constraint) {
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$constraintUpdateCondition = ['and'];
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$constraintInsertCondition = ['and'];
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foreach ($constraint->columnNames as $name) {
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$quotedName = $schema->quoteColumnName($name);
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$constraintUpdateCondition[] = "$quotedTableName.$quotedName=\"EXCLUDED\".$quotedName";
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$constraintInsertCondition[] = "\"upsert\".$quotedName=\"EXCLUDED\".$quotedName";
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}
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$updateCondition[] = $constraintUpdateCondition;
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$insertCondition[] = $constraintInsertCondition;
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}
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$withSql = 'WITH "EXCLUDED" (' . implode(', ', $insertNames)
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. ') AS (' . (!empty($placeholders) ? 'VALUES (' . implode(', ', $placeholders) . ')' : ltrim($values, ' ')) . ')';
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if ($updateColumns === false) {
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$selectSubQuery = (new Query())
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->select(new Expression('1'))
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->from($table)
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->where($updateCondition);
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$insertSelectSubQuery = (new Query())
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->select($insertNames)
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->from('EXCLUDED')
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->where(['not exists', $selectSubQuery]);
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$insertSql = $this->insert($table, $insertSelectSubQuery, $params);
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return "$withSql $insertSql";
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}
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if ($updateColumns === true) {
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$updateColumns = [];
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foreach ($updateNames as $name) {
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$quotedName = $this->db->quoteColumnName($name);
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if (strrpos($quotedName, '.') === false) {
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$quotedName = '"EXCLUDED".' . $quotedName;
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}
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$updateColumns[$name] = new Expression($quotedName);
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}
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}
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list($updates, $params) = $this->prepareUpdateSets($table, $updateColumns, $params);
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$updateSql = 'UPDATE ' . $this->db->quoteTableName($table) . ' SET ' . implode(', ', $updates)
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. ' FROM "EXCLUDED" ' . $this->buildWhere($updateCondition, $params)
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. ' RETURNING ' . $this->db->quoteTableName($table) .'.*';
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$selectUpsertSubQuery = (new Query())
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->select(new Expression('1'))
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->from('upsert')
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->where($insertCondition);
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$insertSelectSubQuery = (new Query())
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->select($insertNames)
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->from('EXCLUDED')
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->where(['not exists', $selectUpsertSubQuery]);
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$insertSql = $this->insert($table, $insertSelectSubQuery, $params);
|
|
return "$withSql, \"upsert\" AS ($updateSql) $insertSql";
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function update($table, $columns, $condition, &$params)
|
|
{
|
|
return parent::update($table, $this->normalizeTableRowData($table, $columns), $condition, $params);
|
|
}
|
|
|
|
/**
|
|
* Normalizes data to be saved into the table, performing extra preparations and type converting, if necessary.
|
|
*
|
|
* @param string $table the table that data will be saved into.
|
|
* @param array|Query $columns the column data (name => value) to be saved into the table or instance
|
|
* of [[yii\db\Query|Query]] to perform INSERT INTO ... SELECT SQL statement.
|
|
* Passing of [[yii\db\Query|Query]] is available since version 2.0.11.
|
|
* @return array|Query normalized columns
|
|
* @since 2.0.9
|
|
*/
|
|
private function normalizeTableRowData($table, $columns)
|
|
{
|
|
if ($columns instanceof Query) {
|
|
return $columns;
|
|
}
|
|
|
|
if (($tableSchema = $this->db->getSchema()->getTableSchema($table)) !== null) {
|
|
$columnSchemas = $tableSchema->columns;
|
|
foreach ($columns as $name => $value) {
|
|
if (isset($columnSchemas[$name]) && $columnSchemas[$name]->type === Schema::TYPE_BINARY && is_string($value)) {
|
|
$columns[$name] = new PdoValue($value, \PDO::PARAM_LOB); // explicitly setup PDO param type for binary column
|
|
}
|
|
}
|
|
}
|
|
|
|
return $columns;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function batchInsert($table, $columns, $rows, &$params = [])
|
|
{
|
|
if (empty($rows)) {
|
|
return '';
|
|
}
|
|
|
|
$schema = $this->db->getSchema();
|
|
if (($tableSchema = $schema->getTableSchema($table)) !== null) {
|
|
$columnSchemas = $tableSchema->columns;
|
|
} else {
|
|
$columnSchemas = [];
|
|
}
|
|
|
|
$values = [];
|
|
foreach ($rows as $row) {
|
|
$vs = [];
|
|
foreach ($row as $i => $value) {
|
|
if (isset($columns[$i], $columnSchemas[$columns[$i]])) {
|
|
$value = $columnSchemas[$columns[$i]]->dbTypecast($value);
|
|
}
|
|
if (is_string($value)) {
|
|
$value = $schema->quoteValue($value);
|
|
} elseif (is_float($value)) {
|
|
// ensure type cast always has . as decimal separator in all locales
|
|
$value = StringHelper::floatToString($value);
|
|
} elseif ($value === true) {
|
|
$value = 'TRUE';
|
|
} elseif ($value === false) {
|
|
$value = 'FALSE';
|
|
} elseif ($value === null) {
|
|
$value = 'NULL';
|
|
} elseif ($value instanceof ExpressionInterface) {
|
|
$value = $this->buildExpression($value, $params);
|
|
}
|
|
$vs[] = $value;
|
|
}
|
|
$values[] = '(' . implode(', ', $vs) . ')';
|
|
}
|
|
if (empty($values)) {
|
|
return '';
|
|
}
|
|
|
|
foreach ($columns as $i => $name) {
|
|
$columns[$i] = $schema->quoteColumnName($name);
|
|
}
|
|
|
|
return 'INSERT INTO ' . $schema->quoteTableName($table)
|
|
. ' (' . implode(', ', $columns) . ') VALUES ' . implode(', ', $values);
|
|
}
|
|
}
|