<?php
namespace Illuminate\Database\Schema\Grammars;
use Illuminate\Support\Fluent;
use Illuminate\Database\Connection;
use Illuminate\Database\Schema\Blueprint;
class MySqlGrammar extends Grammar
{
/**
* The possible column modifiers.
*
* @var array
*/
protected $modifiers = [
'Unsigned', 'VirtualAs', 'StoredAs', 'Charset', 'Collate', 'Nullable',
'Default', 'Increment', 'Comment', 'After', 'First',
];
/**
* The possible column serials.
*
* @var array
*/
protected $serials = ['bigInteger', 'integer', 'mediumInteger', 'smallInteger', 'tinyInteger'];
/**
* Compile the query to determine the list of tables.
*
* @return string
*/
public function compileTableExists()
{
return 'select * from information_schema.tables where table_schema = ? and table_name = ?';
}
/**
* Compile the query to determine the list of columns.
*
* @return string
*/
public function compileColumnListing()
{
return 'select column_name as `column_name` from information_schema.columns where table_schema = ? and table_name = ?';
}
/**
* Compile a create table command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @param \Illuminate\Database\Connection $connection
* @return string
*/
public function compileCreate(Blueprint $blueprint, Fluent $command, Connection $connection)
{
$sql = $this->compileCreateTable(
$blueprint, $command, $connection
);
// Once we have the primary SQL, we can add the encoding option to the SQL for
// the table. Then, we can check if a storage engine has been supplied for
// the table. If so, we will add the engine declaration to the SQL query.
$sql = $this->compileCreateEncoding(
$sql, $connection, $blueprint
);
// Finally, we will append the engine configuration onto this SQL statement as
// the final thing we do before returning this finished SQL. Once this gets
// added the query will be ready to execute against the real connections.
return $this->compileCreateEngine(
$sql, $connection, $blueprint
);
}
/**
* Create the main create table clause.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @param \Illuminate\Database\Connection $connection
* @return string
*/
protected function compileCreateTable($blueprint, $command, $connection)
{
return sprintf('%s table %s (%s)',
$blueprint->temporary ? 'create temporary' : 'create',
$this->wrapTable($blueprint),
implode(', ', $this->getColumns($blueprint))
);
}
/**
* Append the character set specifications to a command.
*
* @param string $sql
* @param \Illuminate\Database\Connection $connection
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @return string
*/
protected function compileCreateEncoding($sql, Connection $connection, Blueprint $blueprint)
{
// First we will set the character set if one has been set on either the create
// blueprint itself or on the root configuration for the connection that the
// table is being created on. We will add these to the create table query.
if (isset($blueprint->charset)) {
$sql .= ' default character set '.$blueprint->charset;
} elseif (! is_null($charset = $connection->getConfig('charset'))) {
$sql .= ' default character set '.$charset;
}
// Next we will add the collation to the create table statement if one has been
// added to either this create table blueprint or the configuration for this
// connection that the query is targeting. We'll add it to this SQL query.
if (isset($blueprint->collation)) {
$sql .= " collate '{$blueprint->collation}'";
} elseif (! is_null($collation = $connection->getConfig('collation'))) {
$sql .= " collate '{$collation}'";
}
return $sql;
}
/**
* Append the engine specifications to a command.
*
* @param string $sql
* @param \Illuminate\Database\Connection $connection
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @return string
*/
protected function compileCreateEngine($sql, Connection $connection, Blueprint $blueprint)
{
if (isset($blueprint->engine)) {
return $sql.' engine = '.$blueprint->engine;
} elseif (! is_null($engine = $connection->getConfig('engine'))) {
return $sql.' engine = '.$engine;
}
return $sql;
}
/**
* Compile an add column command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileAdd(Blueprint $blueprint, Fluent $command)
{
$columns = $this->prefixArray('add', $this->getColumns($blueprint));
return 'alter table '.$this->wrapTable($blueprint).' '.implode(', ', $columns);
}
/**
* Compile a primary key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compilePrimary(Blueprint $blueprint, Fluent $command)
{
$command->name(null);
return $this->compileKey($blueprint, $command, 'primary key');
}
/**
* Compile a unique key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileUnique(Blueprint $blueprint, Fluent $command)
{
return $this->compileKey($blueprint, $command, 'unique');
}
/**
* Compile a plain index key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileIndex(Blueprint $blueprint, Fluent $command)
{
return $this->compileKey($blueprint, $command, 'index');
}
/**
* Compile a spatial index key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileSpatialIndex(Blueprint $blueprint, Fluent $command)
{
return $this->compileKey($blueprint, $command, 'spatial index');
}
/**
* Compile an index creation command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @param string $type
* @return string
*/
protected function compileKey(Blueprint $blueprint, Fluent $command, $type)
{
return sprintf('alter table %s add %s %s%s(%s)',
$this->wrapTable($blueprint),
$type,
$this->wrap($command->index),
$command->algorithm ? ' using '.$command->algorithm : '',
$this->columnize($command->columns)
);
}
/**
* Compile a drop table command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDrop(Blueprint $blueprint, Fluent $command)
{
return 'drop table '.$this->wrapTable($blueprint);
}
/**
* Compile a drop table (if exists) command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropIfExists(Blueprint $blueprint, Fluent $command)
{
return 'drop table if exists '.$this->wrapTable($blueprint);
}
/**
* Compile a drop column command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropColumn(Blueprint $blueprint, Fluent $command)
{
$columns = $this->prefixArray('drop', $this->wrapArray($command->columns));
return 'alter table '.$this->wrapTable($blueprint).' '.implode(', ', $columns);
}
/**
* Compile a drop primary key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropPrimary(Blueprint $blueprint, Fluent $command)
{
return 'alter table '.$this->wrapTable($blueprint).' drop primary key';
}
/**
* Compile a drop unique key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropUnique(Blueprint $blueprint, Fluent $command)
{
$index = $this->wrap($command->index);
return "alter table {$this->wrapTable($blueprint)} drop index {$index}";
}
/**
* Compile a drop index command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropIndex(Blueprint $blueprint, Fluent $command)
{
$index = $this->wrap($command->index);
return "alter table {$this->wrapTable($blueprint)} drop index {$index}";
}
/**
* Compile a drop spatial index command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropSpatialIndex(Blueprint $blueprint, Fluent $command)
{
return $this->compileDropIndex($blueprint, $command);
}
/**
* Compile a drop foreign key command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileDropForeign(Blueprint $blueprint, Fluent $command)
{
$index = $this->wrap($command->index);
return "alter table {$this->wrapTable($blueprint)} drop foreign key {$index}";
}
/**
* Compile a rename table command.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $command
* @return string
*/
public function compileRename(Blueprint $blueprint, Fluent $command)
{
$from = $this->wrapTable($blueprint);
return "rename table {$from} to ".$this->wrapTable($command->to);
}
/**
* Compile the SQL needed to drop all tables.
*
* @param array $tables
* @return string
*/
public function compileDropAllTables($tables)
{
return 'drop table '.implode(',', $this->wrapArray($tables));
}
/**
* Compile the SQL needed to retrieve all table names.
*
* @return string
*/
public function compileGetAllTables()
{
return 'SHOW FULL TABLES WHERE table_type = \'BASE TABLE\'';
}
/**
* Compile the command to enable foreign key constraints.
*
* @return string
*/
public function compileEnableForeignKeyConstraints()
{
return 'SET FOREIGN_KEY_CHECKS=1;';
}
/**
* Compile the command to disable foreign key constraints.
*
* @return string
*/
public function compileDisableForeignKeyConstraints()
{
return 'SET FOREIGN_KEY_CHECKS=0;';
}
/**
* Create the column definition for a char type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeChar(Fluent $column)
{
return "char({$column->length})";
}
/**
* Create the column definition for a string type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeString(Fluent $column)
{
return "varchar({$column->length})";
}
/**
* Create the column definition for a text type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeText(Fluent $column)
{
return 'text';
}
/**
* Create the column definition for a medium text type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeMediumText(Fluent $column)
{
return 'mediumtext';
}
/**
* Create the column definition for a long text type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeLongText(Fluent $column)
{
return 'longtext';
}
/**
* Create the column definition for a big integer type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeBigInteger(Fluent $column)
{
return 'bigint';
}
/**
* Create the column definition for an integer type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeInteger(Fluent $column)
{
return 'int';
}
/**
* Create the column definition for a medium integer type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeMediumInteger(Fluent $column)
{
return 'mediumint';
}
/**
* Create the column definition for a tiny integer type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeTinyInteger(Fluent $column)
{
return 'tinyint';
}
/**
* Create the column definition for a small integer type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeSmallInteger(Fluent $column)
{
return 'smallint';
}
/**
* Create the column definition for a float type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeFloat(Fluent $column)
{
return $this->typeDouble($column);
}
/**
* Create the column definition for a double type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeDouble(Fluent $column)
{
if ($column->total && $column->places) {
return "double({$column->total}, {$column->places})";
}
return 'double';
}
/**
* Create the column definition for a decimal type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeDecimal(Fluent $column)
{
return "decimal({$column->total}, {$column->places})";
}
/**
* Create the column definition for a boolean type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeBoolean(Fluent $column)
{
return 'tinyint(1)';
}
/**
* Create the column definition for an enumeration type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeEnum(Fluent $column)
{
return sprintf('enum(%s)', $this->quoteString($column->allowed));
}
/**
* Create the column definition for a json type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeJson(Fluent $column)
{
return 'json';
}
/**
* Create the column definition for a jsonb type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeJsonb(Fluent $column)
{
return 'json';
}
/**
* Create the column definition for a date type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeDate(Fluent $column)
{
return 'date';
}
/**
* Create the column definition for a date-time type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeDateTime(Fluent $column)
{
return $column->precision ? "datetime($column->precision)" : 'datetime';
}
/**
* Create the column definition for a date-time (with time zone) type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeDateTimeTz(Fluent $column)
{
return $this->typeDateTime($column);
}
/**
* Create the column definition for a time type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeTime(Fluent $column)
{
return $column->precision ? "time($column->precision)" : 'time';
}
/**
* Create the column definition for a time (with time zone) type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeTimeTz(Fluent $column)
{
return $this->typeTime($column);
}
/**
* Create the column definition for a timestamp type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeTimestamp(Fluent $column)
{
$columnType = $column->precision ? "timestamp($column->precision)" : 'timestamp';
return $column->useCurrent ? "$columnType default CURRENT_TIMESTAMP" : $columnType;
}
/**
* Create the column definition for a timestamp (with time zone) type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeTimestampTz(Fluent $column)
{
return $this->typeTimestamp($column);
}
/**
* Create the column definition for a year type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeYear(Fluent $column)
{
return 'year';
}
/**
* Create the column definition for a binary type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeBinary(Fluent $column)
{
return 'blob';
}
/**
* Create the column definition for a uuid type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeUuid(Fluent $column)
{
return 'char(36)';
}
/**
* Create the column definition for an IP address type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeIpAddress(Fluent $column)
{
return 'varchar(45)';
}
/**
* Create the column definition for a MAC address type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
protected function typeMacAddress(Fluent $column)
{
return 'varchar(17)';
}
/**
* Create the column definition for a spatial Geometry type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeGeometry(Fluent $column)
{
return 'geometry';
}
/**
* Create the column definition for a spatial Point type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typePoint(Fluent $column)
{
return 'point';
}
/**
* Create the column definition for a spatial LineString type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeLineString(Fluent $column)
{
return 'linestring';
}
/**
* Create the column definition for a spatial Polygon type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typePolygon(Fluent $column)
{
return 'polygon';
}
/**
* Create the column definition for a spatial GeometryCollection type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeGeometryCollection(Fluent $column)
{
return 'geometrycollection';
}
/**
* Create the column definition for a spatial MultiPoint type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeMultiPoint(Fluent $column)
{
return 'multipoint';
}
/**
* Create the column definition for a spatial MultiLineString type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeMultiLineString(Fluent $column)
{
return 'multilinestring';
}
/**
* Create the column definition for a spatial MultiPolygon type.
*
* @param \Illuminate\Support\Fluent $column
* @return string
*/
public function typeMultiPolygon(Fluent $column)
{
return 'multipolygon';
}
/**
* Get the SQL for a generated virtual column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyVirtualAs(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->virtualAs)) {
return " as ({$column->virtualAs})";
}
}
/**
* Get the SQL for a generated stored column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyStoredAs(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->storedAs)) {
return " as ({$column->storedAs}) stored";
}
}
/**
* Get the SQL for an unsigned column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyUnsigned(Blueprint $blueprint, Fluent $column)
{
if ($column->unsigned) {
return ' unsigned';
}
}
/**
* Get the SQL for a character set column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyCharset(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->charset)) {
return ' character set '.$column->charset;
}
}
/**
* Get the SQL for a collation column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyCollate(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->collation)) {
return " collate '{$column->collation}'";
}
}
/**
* Get the SQL for a nullable column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyNullable(Blueprint $blueprint, Fluent $column)
{
if (is_null($column->virtualAs) && is_null($column->storedAs)) {
return $column->nullable ? ' null' : ' not null';
}
}
/**
* Get the SQL for a default column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyDefault(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->default)) {
return ' default '.$this->getDefaultValue($column->default);
}
}
/**
* Get the SQL for an auto-increment column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyIncrement(Blueprint $blueprint, Fluent $column)
{
if (in_array($column->type, $this->serials) && $column->autoIncrement) {
return ' auto_increment primary key';
}
}
/**
* Get the SQL for a "first" column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyFirst(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->first)) {
return ' first';
}
}
/**
* Get the SQL for an "after" column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyAfter(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->after)) {
return ' after '.$this->wrap($column->after);
}
}
/**
* Get the SQL for a "comment" column modifier.
*
* @param \Illuminate\Database\Schema\Blueprint $blueprint
* @param \Illuminate\Support\Fluent $column
* @return string|null
*/
protected function modifyComment(Blueprint $blueprint, Fluent $column)
{
if (! is_null($column->comment)) {
return " comment '".addslashes($column->comment)."'";
}
}
/**
* Wrap a single string in keyword identifiers.
*
* @param string $value
* @return string
*/
protected function wrapValue($value)
{
if ($value !== '*') {
return '`'.str_replace('`', '``', $value).'`';
}
return $value;
}
}