Files
adminer/adminer/drivers/mssql.inc.php
2025-03-26 01:34:48 +01:00

726 lines
24 KiB
PHP

<?php
/**
* @author Jakub Cernohuby
* @author Vladimir Stastka
* @author Jakub Vrana
*/
namespace Adminer;
$drivers["mssql"] = "MS SQL";
if (isset($_GET["mssql"])) {
define('Adminer\DRIVER', "mssql");
if (extension_loaded("sqlsrv") && $_GET["ext"] != "pdo") {
class Db {
public $extension = "sqlsrv", $flavor = '', $server_info, $affected_rows, $errno, $error;
private $link, $result;
private function get_error() {
$this->error = "";
foreach (sqlsrv_errors() as $error) {
$this->errno = $error["code"];
$this->error .= "$error[message]\n";
}
$this->error = rtrim($this->error);
}
function connect($server, $username, $password) {
global $adminer;
$connection_info = array("UID" => $username, "PWD" => $password, "CharacterSet" => "UTF-8");
$ssl = $adminer->connectSsl();
if (isset($ssl["Encrypt"])) {
$connection_info["Encrypt"] = $ssl["Encrypt"];
}
if (isset($ssl["TrustServerCertificate"])) {
$connection_info["TrustServerCertificate"] = $ssl["TrustServerCertificate"];
}
$db = $adminer->database();
if ($db != "") {
$connection_info["Database"] = $db;
}
$this->link = @sqlsrv_connect(preg_replace('~:~', ',', $server), $connection_info);
if ($this->link) {
$info = sqlsrv_server_info($this->link);
$this->server_info = $info['SQLServerVersion'];
} else {
$this->get_error();
}
return (bool) $this->link;
}
function quote($string) {
$unicode = strlen($string) != strlen(utf8_decode($string));
return ($unicode ? "N" : "") . "'" . str_replace("'", "''", $string) . "'";
}
function select_db($database) {
return $this->query(use_sql($database));
}
function query($query, $unbuffered = false) {
$result = sqlsrv_query($this->link, $query); //! , array(), ($unbuffered ? array() : array("Scrollable" => "keyset"))
$this->error = "";
if (!$result) {
$this->get_error();
return false;
}
return $this->store_result($result);
}
function multi_query($query) {
$this->result = sqlsrv_query($this->link, $query);
$this->error = "";
if (!$this->result) {
$this->get_error();
return false;
}
return true;
}
function store_result($result = null) {
if (!$result) {
$result = $this->result;
}
if (!$result) {
return false;
}
if (sqlsrv_field_metadata($result)) {
return new Result($result);
}
$this->affected_rows = sqlsrv_rows_affected($result);
return true;
}
function next_result() {
return $this->result ? sqlsrv_next_result($this->result) : null;
}
function result($query, $field = 0) {
$result = $this->query($query);
if (!is_object($result)) {
return false;
}
$row = $result->fetch_row();
return $row[$field];
}
}
class Result {
public $num_rows;
private $result, $offset = 0, $fields;
function __construct($result) {
$this->result = $result;
// $this->num_rows = sqlsrv_num_rows($result); // available only in scrollable results
}
private function convert($row) {
foreach ((array) $row as $key => $val) {
if (is_a($val, 'DateTime')) {
$row[$key] = $val->format("Y-m-d H:i:s");
}
//! stream
}
return $row;
}
function fetch_assoc() {
return $this->convert(sqlsrv_fetch_array($this->result, SQLSRV_FETCH_ASSOC));
}
function fetch_row() {
return $this->convert(sqlsrv_fetch_array($this->result, SQLSRV_FETCH_NUMERIC));
}
function fetch_field() {
if (!$this->fields) {
$this->fields = sqlsrv_field_metadata($this->result);
}
$field = $this->fields[$this->offset++];
$return = new \stdClass;
$return->name = $field["Name"];
$return->type = ($field["Type"] == 1 ? 254 : 15);
$return->charsetnr = 0;
return $return;
}
function seek($offset) {
for ($i=0; $i < $offset; $i++) {
sqlsrv_fetch($this->result); // SQLSRV_SCROLL_ABSOLUTE added in sqlsrv 1.1
}
}
function __destruct() {
sqlsrv_free_stmt($this->result);
}
}
function last_id($result) {
return get_val("SELECT SCOPE_IDENTITY()"); // @@IDENTITY can return trigger INSERT
}
function explain($connection, $query) {
$connection->query("SET SHOWPLAN_ALL ON");
$return = $connection->query($query);
$connection->query("SET SHOWPLAN_ALL OFF"); // connection is used also for indexes
return $return;
}
} else {
class MssqlDb extends PdoDb {
function select_db($database) {
// database selection is separated from the connection so dbname in DSN can't be used
return $this->query(use_sql($database));
}
function lastInsertId() {
return $this->pdo->lastInsertId();
}
}
function last_id($result) {
global $connection;
return $connection->lastInsertId();
}
function explain($connection, $query) {
}
if (extension_loaded("pdo_sqlsrv")) {
class Db extends MssqlDb {
public $extension = "PDO_SQLSRV";
function connect($server, $username, $password) {
$this->dsn("sqlsrv:Server=" . str_replace(":", ",", $server), $username, $password);
return true;
}
}
} elseif (extension_loaded("pdo_dblib")) {
class Db extends MssqlDb {
public $extension = "PDO_DBLIB";
function connect($server, $username, $password) {
$this->dsn("dblib:charset=utf8;host=" . str_replace(":", ";unix_socket=", preg_replace('~:(\d)~', ';port=\1', $server)), $username, $password);
return true;
}
}
}
}
class Driver extends SqlDriver {
static $possibleDrivers = array("SQLSRV", "PDO_SQLSRV", "PDO_DBLIB");
static $jush = "mssql";
public $editFunctions = array(
array(
"date|time" => "getdate",
), array(
"int|decimal|real|float|money|datetime" => "+/-",
"char|text" => "+",
)
);
public $operators = array("=", "<", ">", "<=", ">=", "!=", "LIKE", "LIKE %%", "IN", "IS NULL", "NOT LIKE", "NOT IN", "IS NOT NULL");
public $functions = array("len", "lower", "round", "upper");
public $grouping = array("avg", "count", "count distinct", "max", "min", "sum");
public $onActions = "NO ACTION|CASCADE|SET NULL|SET DEFAULT";
public $generated = array("PERSISTED", "VIRTUAL");
function __construct($connection) {
parent::__construct($connection);
$this->types = array( //! use sys.types
lang('Numbers') => array("tinyint" => 3, "smallint" => 5, "int" => 10, "bigint" => 20, "bit" => 1, "decimal" => 0, "real" => 12, "float" => 53, "smallmoney" => 10, "money" => 20),
lang('Date and time') => array("date" => 10, "smalldatetime" => 19, "datetime" => 19, "datetime2" => 19, "time" => 8, "datetimeoffset" => 10),
lang('Strings') => array("char" => 8000, "varchar" => 8000, "text" => 2147483647, "nchar" => 4000, "nvarchar" => 4000, "ntext" => 1073741823),
lang('Binary') => array("binary" => 8000, "varbinary" => 8000, "image" => 2147483647),
);
}
function insertUpdate($table, $rows, $primary) {
$fields = fields($table);
$update = array();
$where = array();
$set = reset($rows);
$columns = "c" . implode(", c", range(1, count($set)));
$c = 0;
$insert = array();
foreach ($set as $key => $val) {
$c++;
$name = idf_unescape($key);
if (!$fields[$name]["auto_increment"]) {
$insert[$key] = "c$c";
}
if (isset($primary[$name])) {
$where[] = "$key = c$c";
} else {
$update[] = "$key = c$c";
}
}
$values = array();
foreach ($rows as $set) {
$values[] = "(" . implode(", ", $set) . ")";
}
if ($where) {
$identity = queries("SET IDENTITY_INSERT " . table($table) . " ON");
$return = queries(
"MERGE " . table($table) . " USING (VALUES\n\t" . implode(",\n\t", $values) . "\n) AS source ($columns) ON " . implode(" AND ", $where) //! source, c1 - possible conflict
. ($update ? "\nWHEN MATCHED THEN UPDATE SET " . implode(", ", $update) : "")
. "\nWHEN NOT MATCHED THEN INSERT (" . implode(", ", array_keys($identity ? $set : $insert)) . ") VALUES (" . ($identity ? $columns : implode(", ", $insert)) . ");" // ; is mandatory
);
if ($identity) {
queries("SET IDENTITY_INSERT " . table($table) . " OFF");
}
} else {
$return = queries("INSERT INTO " . table($table) . " (" . implode(", ", array_keys($set)) . ") VALUES\n" . implode(",\n", $values));
}
return $return;
}
function begin() {
return queries("BEGIN TRANSACTION");
}
function tableHelp($name, $is_view = false) {
$links = array(
"sys" => "catalog-views/sys-",
"INFORMATION_SCHEMA" => "information-schema-views/",
);
$link = $links[get_schema()];
if ($link) {
return "relational-databases/system-$link" . preg_replace('~_~', '-', strtolower($name)) . "-transact-sql";
}
}
}
function idf_escape($idf) {
return "[" . str_replace("]", "]]", $idf) . "]";
}
function table($idf) {
return ($_GET["ns"] != "" ? idf_escape($_GET["ns"]) . "." : "") . idf_escape($idf);
}
function connect($credentials) {
$connection = new Db;
if ($credentials[0] == "") {
$credentials[0] = "localhost:1433";
}
if ($connection->connect($credentials[0], $credentials[1], $credentials[2])) {
return $connection;
}
return $connection->error;
}
function get_databases() {
return get_vals("SELECT name FROM sys.databases WHERE name NOT IN ('master', 'tempdb', 'model', 'msdb')");
}
function limit($query, $where, $limit, $offset = 0, $separator = " ") {
return ($limit !== null ? " TOP (" . ($limit + $offset) . ")" : "") . " $query$where"; // seek later
}
function limit1($table, $query, $where, $separator = "\n") {
return limit($query, $where, 1, 0, $separator);
}
function db_collation($db, $collations) {
return get_val("SELECT collation_name FROM sys.databases WHERE name = " . q($db));
}
function logged_user() {
return get_val("SELECT SUSER_NAME()");
}
function tables_list() {
return get_key_vals("SELECT name, type_desc FROM sys.all_objects WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V') ORDER BY name");
}
function count_tables($databases) {
global $connection;
$return = array();
foreach ($databases as $db) {
$connection->select_db($db);
$return[$db] = get_val("SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES");
}
return $return;
}
function table_status($name = "") {
$return = array();
foreach (
get_rows("SELECT ao.name AS Name, ao.type_desc AS Engine, (SELECT value FROM fn_listextendedproperty(default, 'SCHEMA', schema_name(schema_id), 'TABLE', ao.name, null, null)) AS Comment
FROM sys.all_objects AS ao
WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V') " . ($name != "" ? "AND name = " . q($name) : "ORDER BY name")) as $row
) {
$return[$row["Name"]] = $row;
}
return $return;
}
function is_view($table_status) {
return $table_status["Engine"] == "VIEW";
}
function fk_support($table_status) {
return true;
}
function fields($table) {
$comments = get_key_vals("SELECT objname, cast(value as varchar(max)) FROM fn_listextendedproperty('MS_DESCRIPTION', 'schema', " . q(get_schema()) . ", 'table', " . q($table) . ", 'column', NULL)");
$return = array();
$table_id = get_val("SELECT object_id FROM sys.all_objects WHERE schema_id = SCHEMA_ID(" . q(get_schema()) . ") AND type IN ('S', 'U', 'V') AND name = " . q($table));
foreach (
get_rows("SELECT c.max_length, c.precision, c.scale, c.name, c.is_nullable, c.is_identity, c.collation_name, t.name type, d.definition [default], d.name default_constraint, i.is_primary_key
FROM sys.all_columns c
JOIN sys.types t ON c.user_type_id = t.user_type_id
LEFT JOIN sys.default_constraints d ON c.default_object_id = d.object_id
LEFT JOIN sys.index_columns ic ON c.object_id = ic.object_id AND c.column_id = ic.column_id
LEFT JOIN sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE c.object_id = " . q($table_id)) as $row
) {
$type = $row["type"];
$length = (preg_match("~char|binary~", $type)
? $row["max_length"] / ($type[0] == 'n' ? 2 : 1)
: ($type == "decimal" ? "$row[precision],$row[scale]" : "")
);
$return[$row["name"]] = array(
"field" => $row["name"],
"full_type" => $type . ($length ? "($length)" : ""),
"type" => $type,
"length" => $length,
"default" => (preg_match("~^\('(.*)'\)$~", $row["default"], $match) ? str_replace("''", "'", $match[1]) : $row["default"]),
"default_constraint" => $row["default_constraint"],
"null" => $row["is_nullable"],
"auto_increment" => $row["is_identity"],
"collation" => $row["collation_name"],
"privileges" => array("insert" => 1, "select" => 1, "update" => 1, "where" => 1, "order" => 1),
"primary" => $row["is_primary_key"],
"comment" => $comments[$row["name"]],
);
}
foreach (get_rows("SELECT * FROM sys.computed_columns WHERE object_id = " . q($table_id)) as $row) {
$return[$row["name"]]["generated"] = ($row["is_persisted"] ? "PERSISTED" : "VIRTUAL");
$return[$row["name"]]["default"] = $row["definition"];
}
return $return;
}
function indexes($table, $connection2 = null) {
$return = array();
// sp_statistics doesn't return information about primary key
foreach (
get_rows("SELECT i.name, key_ordinal, is_unique, is_primary_key, c.name AS column_name, is_descending_key
FROM sys.indexes i
INNER JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
INNER JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE OBJECT_NAME(i.object_id) = " . q($table), $connection2) as $row
) {
$name = $row["name"];
$return[$name]["type"] = ($row["is_primary_key"] ? "PRIMARY" : ($row["is_unique"] ? "UNIQUE" : "INDEX"));
$return[$name]["lengths"] = array();
$return[$name]["columns"][$row["key_ordinal"]] = $row["column_name"];
$return[$name]["descs"][$row["key_ordinal"]] = ($row["is_descending_key"] ? '1' : null);
}
return $return;
}
function view($name) {
return array("select" => preg_replace('~^(?:[^[]|\[[^]]*])*\s+AS\s+~isU', '', get_val("SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = SCHEMA_NAME() AND TABLE_NAME = " . q($name))));
}
function collations() {
$return = array();
foreach (get_vals("SELECT name FROM fn_helpcollations()") as $collation) {
$return[preg_replace('~_.*~', '', $collation)][] = $collation;
}
return $return;
}
function information_schema($db) {
return get_schema() == "INFORMATION_SCHEMA";
}
function error() {
global $connection;
return nl_br(h(preg_replace('~^(\[[^]]*])+~m', '', $connection->error)));
}
function create_database($db, $collation) {
return queries("CREATE DATABASE " . idf_escape($db) . (preg_match('~^[a-z0-9_]+$~i', $collation) ? " COLLATE $collation" : ""));
}
function drop_databases($databases) {
return queries("DROP DATABASE " . implode(", ", array_map('Adminer\idf_escape', $databases)));
}
function rename_database($name, $collation) {
if (preg_match('~^[a-z0-9_]+$~i', $collation)) {
queries("ALTER DATABASE " . idf_escape(DB) . " COLLATE $collation");
}
queries("ALTER DATABASE " . idf_escape(DB) . " MODIFY NAME = " . idf_escape($name));
return true; //! false negative "The database name 'test2' has been set."
}
function auto_increment() {
return " IDENTITY" . ($_POST["Auto_increment"] != "" ? "(" . number($_POST["Auto_increment"]) . ",1)" : "") . " PRIMARY KEY";
}
function alter_table($table, $name, $fields, $foreign, $comment, $engine, $collation, $auto_increment, $partitioning) {
$alter = array();
$comments = array();
$orig_fields = fields($table);
foreach ($fields as $field) {
$column = idf_escape($field[0]);
$val = $field[1];
if (!$val) {
$alter["DROP"][] = " COLUMN $column";
} else {
$val[1] = preg_replace("~( COLLATE )'(\\w+)'~", '\1\2', $val[1]);
$comments[$field[0]] = $val[5];
unset($val[5]);
if (preg_match('~ AS ~', $val[3])) {
unset($val[1], $val[2]);
}
if ($field[0] == "") {
$alter["ADD"][] = "\n " . implode("", $val) . ($table == "" ? substr($foreign[$val[0]], 16 + strlen($val[0])) : ""); // 16 - strlen(" FOREIGN KEY ()")
} else {
$default = $val[3];
unset($val[3]); // default values are set separately
unset($val[6]); //! identity can't be removed
if ($column != $val[0]) {
queries("EXEC sp_rename " . q(table($table) . ".$column") . ", " . q(idf_unescape($val[0])) . ", 'COLUMN'");
}
$alter["ALTER COLUMN " . implode("", $val)][] = "";
$orig_field = $orig_fields[$field[0]];
if (default_value($orig_field) != $default) {
if ($orig_field["default"] !== null) {
$alter["DROP"][] = " " . idf_escape($orig_field["default_constraint"]);
}
if ($default) {
$alter["ADD"][] = "\n $default FOR $column";
}
}
}
}
}
if ($table == "") {
return queries("CREATE TABLE " . table($name) . " (" . implode(",", (array) $alter["ADD"]) . "\n)");
}
if ($table != $name) {
queries("EXEC sp_rename " . q(table($table)) . ", " . q($name));
}
if ($foreign) {
$alter[""] = $foreign;
}
foreach ($alter as $key => $val) {
if (!queries("ALTER TABLE " . table($name) . " $key" . implode(",", $val))) {
return false;
}
}
foreach ($comments as $key => $val) {
$comment = substr($val, 9); // 9 - strlen(" COMMENT ")
queries("EXEC sp_dropextendedproperty @name = N'MS_Description', @level0type = N'Schema', @level0name = " . q(get_schema()) . ", @level1type = N'Table', @level1name = " . q($name) . ", @level2type = N'Column', @level2name = " . q($key));
queries("EXEC sp_addextendedproperty
@name = N'MS_Description',
@value = $comment,
@level0type = N'Schema',
@level0name = " . q(get_schema()) . ",
@level1type = N'Table',
@level1name = " . q($name) . ",
@level2type = N'Column',
@level2name = " . q($key))
;
}
return true;
}
function alter_indexes($table, $alter) {
$index = array();
$drop = array();
foreach ($alter as $val) {
if ($val[2] == "DROP") {
if ($val[0] == "PRIMARY") { //! sometimes used also for UNIQUE
$drop[] = idf_escape($val[1]);
} else {
$index[] = idf_escape($val[1]) . " ON " . table($table);
}
} elseif (
!queries(($val[0] != "PRIMARY"
? "CREATE $val[0] " . ($val[0] != "INDEX" ? "INDEX " : "") . idf_escape($val[1] != "" ? $val[1] : uniqid($table . "_")) . " ON " . table($table)
: "ALTER TABLE " . table($table) . " ADD PRIMARY KEY"
) . " (" . implode(", ", $val[2]) . ")")
) {
return false;
}
}
return (!$index || queries("DROP INDEX " . implode(", ", $index)))
&& (!$drop || queries("ALTER TABLE " . table($table) . " DROP " . implode(", ", $drop)))
;
}
function found_rows($table_status, $where) {
}
function foreign_keys($table) {
$return = array();
$on_actions = array("CASCADE", "NO ACTION", "SET NULL", "SET DEFAULT");
foreach (get_rows("EXEC sp_fkeys @fktable_name = " . q($table) . ", @fktable_owner = " . q(get_schema())) as $row) {
$foreign_key = &$return[$row["FK_NAME"]];
$foreign_key["db"] = $row["PKTABLE_QUALIFIER"];
$foreign_key["ns"] = $row["PKTABLE_OWNER"];
$foreign_key["table"] = $row["PKTABLE_NAME"];
$foreign_key["on_update"] = $on_actions[$row["UPDATE_RULE"]];
$foreign_key["on_delete"] = $on_actions[$row["DELETE_RULE"]];
$foreign_key["source"][] = $row["FKCOLUMN_NAME"];
$foreign_key["target"][] = $row["PKCOLUMN_NAME"];
}
return $return;
}
function truncate_tables($tables) {
return apply_queries("TRUNCATE TABLE", $tables);
}
function drop_views($views) {
return queries("DROP VIEW " . implode(", ", array_map('Adminer\table', $views)));
}
function drop_tables($tables) {
return queries("DROP TABLE " . implode(", ", array_map('Adminer\table', $tables)));
}
function move_tables($tables, $views, $target) {
return apply_queries("ALTER SCHEMA " . idf_escape($target) . " TRANSFER", array_merge($tables, $views));
}
function trigger($name) {
if ($name == "") {
return array();
}
$rows = get_rows(
"SELECT s.name [Trigger],
CASE WHEN OBJECTPROPERTY(s.id, 'ExecIsInsertTrigger') = 1 THEN 'INSERT' WHEN OBJECTPROPERTY(s.id, 'ExecIsUpdateTrigger') = 1 THEN 'UPDATE' WHEN OBJECTPROPERTY(s.id, 'ExecIsDeleteTrigger') = 1 THEN 'DELETE' END [Event],
CASE WHEN OBJECTPROPERTY(s.id, 'ExecIsInsteadOfTrigger') = 1 THEN 'INSTEAD OF' ELSE 'AFTER' END [Timing],
c.text
FROM sysobjects s
JOIN syscomments c ON s.id = c.id
WHERE s.xtype = 'TR' AND s.name = " . q($name)
); // triggers are not schema-scoped
$return = reset($rows);
if ($return) {
$return["Statement"] = preg_replace('~^.+\s+AS\s+~isU', '', $return["text"]); //! identifiers, comments
}
return $return;
}
function triggers($table) {
$return = array();
foreach (
get_rows("SELECT sys1.name,
CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsertTrigger') = 1 THEN 'INSERT' WHEN OBJECTPROPERTY(sys1.id, 'ExecIsUpdateTrigger') = 1 THEN 'UPDATE' WHEN OBJECTPROPERTY(sys1.id, 'ExecIsDeleteTrigger') = 1 THEN 'DELETE' END [Event],
CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsteadOfTrigger') = 1 THEN 'INSTEAD OF' ELSE 'AFTER' END [Timing]
FROM sysobjects sys1
JOIN sysobjects sys2 ON sys1.parent_obj = sys2.id
WHERE sys1.xtype = 'TR' AND sys2.name = " . q($table)) as $row
) { // triggers are not schema-scoped
$return[$row["name"]] = array($row["Timing"], $row["Event"]);
}
return $return;
}
function trigger_options() {
return array(
"Timing" => array("AFTER", "INSTEAD OF"),
"Event" => array("INSERT", "UPDATE", "DELETE"),
"Type" => array("AS"),
);
}
function schemas() {
return get_vals("SELECT name FROM sys.schemas");
}
function get_schema() {
if ($_GET["ns"] != "") {
return $_GET["ns"];
}
return get_val("SELECT SCHEMA_NAME()");
}
function set_schema($schema) {
$_GET["ns"] = $schema;
return true; // ALTER USER is permanent
}
function create_sql($table, $auto_increment, $style) {
global $driver;
if (is_view(table_status1($table))) {
$view = view($table);
return "CREATE VIEW " . table($table) . " AS $view[select]";
}
$fields = array();
$primary = false;
foreach (fields($table) as $name => $field) {
$val = process_field($field, $field);
if ($val[6]) {
$primary = true;
}
$fields[] = implode("", $val);
}
foreach (indexes($table) as $name => $index) {
if (!$primary || $index["type"] != "PRIMARY") {
$columns = array();
foreach ($index["columns"] as $key => $val) {
$columns[] = idf_escape($val) . ($index["descs"][$key] ? " DESC" : "");
}
$name = idf_escape($name);
$fields[] = ($index["type"] == "INDEX" ? "INDEX $name" : "CONSTRAINT $name " . ($index["type"] == "UNIQUE" ? "UNIQUE" : "PRIMARY KEY")) . " (" . implode(", ", $columns) . ")";
}
}
foreach ($driver->checkConstraints($table) as $name => $check) {
$fields[] = "CONSTRAINT " . idf_escape($name) . " CHECK ($check)";
}
return "CREATE TABLE " . table($table) . " (\n\t" . implode(",\n\t", $fields) . "\n)";
}
function foreign_keys_sql($table) {
$fields = array();
foreach (foreign_keys($table) as $foreign) {
$fields[] = ltrim(format_foreign_key($foreign));
}
return ($fields ? "ALTER TABLE " . table($table) . " ADD\n\t" . implode(",\n\t", $fields) . ";\n\n" : "");
}
function truncate_sql($table) {
return "TRUNCATE TABLE " . table($table);
}
function use_sql($database) {
return "USE " . idf_escape($database);
}
function trigger_sql($table) {
$return = "";
foreach (triggers($table) as $name => $trigger) {
$return .= create_trigger(" ON " . table($table), trigger($name)) . ";";
}
return $return;
}
function convert_field($field) {
}
function unconvert_field($field, $return) {
return $return;
}
function support($feature) {
return preg_match('~^(check|comment|columns|database|drop_col|dump|indexes|descidx|scheme|sql|table|trigger|view|view_trigger)$~', $feature); //! routine|
}
}