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<?php
namespace Illuminate\Database\Schema\Grammars;
use Illuminate\Support\Fluent; use Illuminate\Database\Schema\Blueprint;
class PostgresGrammar extends Grammar { /** * If this Grammar supports schema changes wrapped in a transaction. * * @var bool */ protected $transactions = true;
/** * The possible column modifiers. * * @var array */ protected $modifiers = ['Increment', 'Nullable', 'Default'];
/** * 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 information_schema.tables where table_schema = ? and table_name = ?'; }
/** * Compile the query to determine the list of columns. * * @param string $table * @return string */ public function compileColumnExists($table) { return "select column_name from information_schema.columns where table_name = '$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) { $columns = implode(', ', $this->getColumns($blueprint));
$sql = $blueprint->temporary ? 'create temporary' : 'create';
$sql .= ' table '.$this->wrapTable($blueprint)." ($columns)";
return $sql; }
/** * Compile a column addition command. * * @param \Illuminate\Database\Schema\Blueprint $blueprint * @param \Illuminate\Support\Fluent $command * @return string */ public function compileAdd(Blueprint $blueprint, Fluent $command) { $table = $this->wrapTable($blueprint);
$columns = $this->prefixArray('add column', $this->getColumns($blueprint));
return 'alter table '.$table.' '.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) { $columns = $this->columnize($command->columns);
return 'alter table '.$this->wrapTable($blueprint)." add primary key ({$columns})"; }
/** * 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) { $table = $this->wrapTable($blueprint);
$index = $this->wrap($command->index);
$columns = $this->columnize($command->columns);
return "alter table $table add constraint {$index} unique ($columns)"; }
/** * 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) { $columns = $this->columnize($command->columns);
$index = $this->wrap($command->index);
$algorithm = $command->algorithm ? ' using '.$command->algorithm : '';
return "create index {$index} on ".$this->wrapTable($blueprint).$algorithm." ({$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 column', $this->wrapArray($command->columns));
$table = $this->wrapTable($blueprint);
return 'alter table '.$table.' '.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) { $table = $blueprint->getTable();
$index = $this->wrap("{$table}_pkey");
return 'alter table '.$this->wrapTable($blueprint)." drop constraint {$index}"; }
/** * 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) { $table = $this->wrapTable($blueprint);
$index = $this->wrap($command->index);
return "alter table {$table} drop constraint {$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 "drop index {$index}"; }
/** * 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) { $table = $this->wrapTable($blueprint);
$index = $this->wrap($command->index);
return "alter table {$table} drop constraint {$index}"; }
/** * Compile the command to enable foreign key constraints. * * @return string */ public function compileEnableForeignKeyConstraints() { return 'SET CONSTRAINTS ALL IMMEDIATE;'; }
/** * Compile the command to disable foreign key constraints. * * @return string */ public function compileDisableForeignKeyConstraints() { return 'SET CONSTRAINTS ALL DEFERRED;'; }
/** * 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 "alter table {$from} rename to ".$this->wrapTable($command->to); }
/** * 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 'text'; }
/** * Create the column definition for a long text type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeLongText(Fluent $column) { return 'text'; }
/** * Create the column definition for an integer type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeInteger(Fluent $column) { return $column->autoIncrement ? 'serial' : 'integer'; }
/** * Create the column definition for a big integer type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeBigInteger(Fluent $column) { return $column->autoIncrement ? 'bigserial' : 'bigint'; }
/** * Create the column definition for a medium integer type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeMediumInteger(Fluent $column) { return $column->autoIncrement ? 'serial' : 'integer'; }
/** * Create the column definition for a tiny integer type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeTinyInteger(Fluent $column) { return $column->autoIncrement ? 'smallserial' : 'smallint'; }
/** * Create the column definition for a small integer type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeSmallInteger(Fluent $column) { return $column->autoIncrement ? 'smallserial' : '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) { return 'double precision'; }
/** * 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 'boolean'; }
/** * Create the column definition for an enum type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeEnum(Fluent $column) { $allowed = array_map(function ($a) { return "'{$a}'"; }, $column->allowed);
return "varchar(255) check (\"{$column->name}\" in (".implode(', ', $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 'jsonb'; }
/** * 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 'timestamp(0) without time zone'; }
/** * Create the column definition for a date-time type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeDateTimeTz(Fluent $column) { return 'timestamp(0) with time zone'; }
/** * Create the column definition for a time type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeTime(Fluent $column) { return 'time(0) without time zone'; }
/** * Create the column definition for a time type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeTimeTz(Fluent $column) { return 'time(0) with time zone'; }
/** * Create the column definition for a timestamp type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeTimestamp(Fluent $column) { if ($column->useCurrent) { return 'timestamp(0) without time zone default CURRENT_TIMESTAMP(0)'; }
return 'timestamp(0) without time zone'; }
/** * Create the column definition for a timestamp type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeTimestampTz(Fluent $column) { if ($column->useCurrent) { return 'timestamp(0) with time zone default CURRENT_TIMESTAMP(0)'; }
return 'timestamp(0) with time zone'; }
/** * Create the column definition for a binary type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeBinary(Fluent $column) { return 'bytea'; }
/** * Create the column definition for a uuid type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeUuid(Fluent $column) { return 'uuid'; }
/** * Create the column definition for an IP address type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeIpAddress(Fluent $column) { return 'inet'; }
/** * Create the column definition for a MAC address type. * * @param \Illuminate\Support\Fluent $column * @return string */ protected function typeMacAddress(Fluent $column) { return 'macaddr'; }
/** * 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) { 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 ' primary key'; } } }
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