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BUGFIX Fixed alterations to existing tables - SQL server requires a single "ADD" clause followed by a list of columns instead of individual ADD clauses.

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This commit is contained in:
Sean Harvey 2009-04-08 22:11:38 +00:00
parent 87419c77f1
commit 0159e3c5fb
1 changed files with 34 additions and 19 deletions
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53
code/MSSQLDatabase.php
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@ -139,6 +139,7 @@ class MSSQLDatabase extends Database {
//Debug::backtrace();
//if($sql!='')
$handle = mssql_query($sql, $this->dbConn);
//else
// $handle=null;
@ -252,23 +253,24 @@ class MSSQLDatabase extends Database {
public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null) {
$fieldSchemas = $indexSchemas = "";
$alterList = array();
if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ADD \"$k\" $v";
$newFieldsList = array();
if($newFields) foreach($newFields as $k => $v) {
$newFieldsList[] .= "$k $v";
}
$indexList=$this->IndexList($tableName);
$indexList = $this->IndexList($tableName);
$existingFieldList = array();
if($alteredFields) {
foreach($alteredFields as $k => $v) {
$val=$this->alterTableAlterColumn($tableName, $k, $v, $indexList);
if($val!='')
$alterList[] .= $val;
$val = $this->alterTableAlterColumn($tableName, $k, $v, $indexList);
if($val != '') $existingFieldList[] .= $val;
}
}
//DB ABSTRACTION: we need to change the constraints to be a separate 'add' command,
//see http://www.postgresql.org/docs/8.1/static/sql-altertable.html
$alterIndexList=Array();
$alterIndexList = array();
if($alteredIndexes) foreach($alteredIndexes as $v) {
//TODO: I don't think that these drop index commands will work:
if($v['type']!='fulltext'){
@ -285,21 +287,29 @@ class MSSQLDatabase extends Database {
}
}
//Add the new indexes:
if($newIndexes) foreach($newIndexes as $k=>$v){
$alterIndexList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
}
if($alterList) {
$alterations = implode(",\n", $alterList);
//echo 'the alterations are ' . $alterList . '<br>';
//$this->query("ALTER TABLE \"$tableName\" " . $alterations);
$this->query($alterations);
// ADD needs to be added before the columns to add, rather than multiple ADD statements
$alterations = '';
if($newFieldsList) {
$alterations .= "ALTER TABLE \"$tableName\" ADD ";
$alterations .= implode(",\n", $newFieldsList);
}
foreach($alterIndexList as $alteration)
if($alteration!='')
$this->query($alteration);
if($existingFieldList) {
$alterations .= implode(",\n", $existingFieldList);
}
if($alterIndexList) {
$alterations .= "ALTER TABLE \"$tableName\" ";
$alterations .= implode(",\n", $alterIndexList);
}
$this->query($alterations);
}
/*
@ -352,11 +362,12 @@ class MSSQLDatabase extends Database {
//drop the index if it exists:
$alterCol='';
$prefix="ALTER TABLE \"" . $tableName . "\" ";
if(isset($indexList[$colName])){
$alterCol = "\nDROP INDEX \"$tableName\".ix_{$tableName}_{$colName}";
$alterCol = "\n$prefix DROP INDEX \"$tableName\".ix_{$tableName}_{$colName}";
}
$prefix="ALTER TABLE \"" . $tableName . "\" ";
if(isset($matches[1])) {
$alterCol .= "\n$prefix ALTER COLUMN \"$colName\" $matches[1]\n";
@ -723,7 +734,11 @@ class MSSQLDatabase extends Database {
//Enums are a bit different. We'll be creating a varchar(255) with a constraint of all the usual enum options.
//NOTE: In this one instance, we are including the table name in the values array
return "varchar(255) not null default '" . $values['default'] . "' check (\"" . $values['name'] . "\" in ('" . implode('\', \'', $values['enums']) . "'))";
$name = $values['name'];
$default = $values['default'];
$enums = implode('\', \'', $values['enums']);
return "varchar(255) not null check(\"$name\" in ('$enums'))";
}