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See Release Notes

  • Bug fixes for general core bugs in 4.3.x will end 7 October 2024 (12 months).
  • Bug fixes for security issues in 4.3.x will end 21 April 2025 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.2.x is supported too.
<?php
<
/**
< @version v5.20.16 12-Jan-2020 < @copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved. < @copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community < Released under both BSD license and Lesser GPL library license. < Whenever there is any discrepancy between the two licenses, < the BSD license will take precedence. < < Set tabs to 4 for best viewing. <
> * Data Dictionary for PostgreSQL. > * > * This file is part of ADOdb, a Database Abstraction Layer library for PHP. > * > * @package ADOdb > * @link https://adodb.org Project's web site and documentation > * @link https://github.com/ADOdb/ADOdb Source code and issue tracker > * > * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause > * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option, > * any later version. This means you can use it in proprietary products. > * See the LICENSE.md file distributed with this source code for details. > * @license BSD-3-Clause > * @license LGPL-2.1-or-later > * > * @copyright 2000-2013 John Lim > * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/ // security - hide paths if (!defined('ADODB_DIR')) die();
< class ADODB2_postgres extends ADODB_DataDict { <
> class ADODB2_postgres extends ADODB_DataDict > {
var $databaseType = 'postgres'; var $seqField = false; var $seqPrefix = 'SEQ_'; var $addCol = ' ADD COLUMN'; var $quote = '"'; var $renameTable = 'ALTER TABLE %s RENAME TO %s'; // at least since 7.1 var $dropTable = 'DROP TABLE %s CASCADE';
< function MetaType($t,$len=-1,$fieldobj=false)
> public $blobAllowsDefaultValue = true; > public $blobAllowsNotNull = true; > > function metaType($t, $len=-1, $fieldobj=false)
{ if (is_object($t)) { $fieldobj = $t; $t = $fieldobj->type; $len = $fieldobj->max_length; }
> $is_serial = is_object($fieldobj) && !empty($fieldobj->primary_key) && !empty($fieldobj->unique) && > $t = strtoupper($t); !empty($fieldobj->has_default) && substr($fieldobj->default_value,0,8) == 'nextval('; > > if (array_key_exists($t,$this->connection->customActualTypes)) switch (strtoupper($t)) { > return $this->connection->customActualTypes[$t]; case 'INTERVAL': >
< switch (strtoupper($t)) {
> switch ($t) { >
case 'CHARACTER': case 'VARCHAR': case 'NAME': case 'BPCHAR': if ($len <= $this->blobSize) return 'C'; case 'TEXT': return 'X'; case 'IMAGE': // user defined type case 'BLOB': // user defined type case 'BIT': // This is a bit string, not a single bit, so don't return 'L' case 'VARBIT': case 'BYTEA': return 'B'; case 'BOOL': case 'BOOLEAN': return 'L'; case 'DATE': return 'D'; case 'TIME': case 'DATETIME': case 'TIMESTAMP': case 'TIMESTAMPTZ': return 'T'; case 'INTEGER': return !$is_serial ? 'I' : 'R'; case 'SMALLINT': case 'INT2': return !$is_serial ? 'I2' : 'R'; case 'INT4': return !$is_serial ? 'I4' : 'R'; case 'BIGINT': case 'INT8': return !$is_serial ? 'I8' : 'R'; case 'OID': case 'SERIAL': return 'R'; case 'FLOAT4': case 'FLOAT8': case 'DOUBLE PRECISION': case 'REAL': return 'F'; default:
< return 'N';
> return ADODB_DEFAULT_METATYPE;
} }
< function ActualType($meta)
> function actualType($meta)
{
> $meta = strtoupper($meta); switch($meta) { > case 'C': return 'VARCHAR'; > /* case 'XL': > * Add support for custom meta types. We do this case 'X': return 'TEXT'; > * first, that allows us to override existing types > */ case 'C2': return 'VARCHAR'; > if (isset($this->connection->customMetaTypes[$meta])) case 'X2': return 'TEXT'; > return $this->connection->customMetaTypes[$meta]['actual']; >
case 'B': return 'BYTEA'; case 'D': return 'DATE'; case 'TS': case 'T': return 'TIMESTAMP'; case 'L': return 'BOOLEAN'; case 'I': return 'INTEGER'; case 'I1': return 'SMALLINT'; case 'I2': return 'INT2'; case 'I4': return 'INT4'; case 'I8': return 'INT8'; case 'F': return 'FLOAT8'; case 'N': return 'NUMERIC'; default: return $meta; } } /** * Adding a new Column * * reimplementation of the default function as postgres does NOT allow to set the default in the same statement * * @param string $tabname table-name * @param string $flds column-names and types for the changed columns * @return array with SQL strings */
< function AddColumnSQL($tabname, $flds)
> function addColumnSQL($tabname, $flds)
{
< $tabname = $this->TableName ($tabname);
> $tabname = $this->tableName($tabname);
$sql = array(); $not_null = false;
< list($lines,$pkey) = $this->_GenFields($flds); < $alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' ';
> list($lines,$pkey) = $this->_genFields($flds); > $alter = 'ALTER TABLE ' . $tabname . $this->addCol; > $alter .= (float)@$this->serverInfo['version'] < 9.6 ? ' ' : ' IF NOT EXISTS ';
foreach($lines as $v) { if (($not_null = preg_match('/NOT NULL/i',$v))) { $v = preg_replace('/NOT NULL/i','',$v); } if (preg_match('/^([^ ]+) .*DEFAULT (\'[^\']+\'|\"[^\"]+\"|[^ ]+)/',$v,$matches)) { list(,$colname,$default) = $matches; $sql[] = $alter . str_replace('DEFAULT '.$default,'',$v);
< $sql[] = 'UPDATE '.$tabname.' SET '.$colname.'='.$default;
> $sql[] = 'UPDATE '.$tabname.' SET '.$colname.'='.$default.' WHERE '.$colname.' IS NULL ';
$sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET DEFAULT ' . $default; } else { $sql[] = $alter . $v; } if ($not_null) { list($colname) = explode(' ',$v); $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET NOT NULL'; } } return $sql; }
< function DropIndexSQL ($idxname, $tabname = NULL)
> function dropIndexSQL($idxname, $tabname = NULL)
{
< return array(sprintf($this->dropIndex, $this->TableName($idxname), $this->TableName($tabname)));
> return array(sprintf($this->dropIndex, $this->tableName($idxname), $this->tableName($tabname)));
} /** * Change the definition of one column *
< * Postgres can't do that on it's own, you need to supply the complete defintion of the new table, < * to allow, recreating the table and copying the content over to the new table
> * Postgres can't do that on its own, you need to supply the complete > * definition of the new table, to allow recreating the table and copying > * the content over to the new table. > *
* @param string $tabname table-name * @param string $flds column-name and type for the changed column
< * @param string $tableflds complete defintion of the new table, eg. for postgres, default '' < * @param array/ $tableoptions options for the new table see CreateTableSQL, default ''
> * @param string $tableflds complete definition of the new table, e.g. for postgres, default '' > * @param array $tableoptions options for the new table {@see CreateTableSQL()}, default '' > *
* @return array with SQL strings */
< /* < function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') < { < if (!$tableflds) { < if ($this->debug) ADOConnection::outp("AlterColumnSQL needs a complete table-definiton for PostgreSQL"); < return array(); < } < return $this->_recreate_copy_table($tabname,False,$tableflds,$tableoptions); < }*/ < < function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
> function alterColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
{ // Check if alter single column datatype available - works with 8.0+ $has_alter_column = 8.0 <= (float) @$this->serverInfo['version']; if ($has_alter_column) {
< $tabname = $this->TableName($tabname);
> $tabname = $this->tableName($tabname);
$sql = array();
< list($lines,$pkey) = $this->_GenFields($flds);
> list($lines,$pkey) = $this->_genFields($flds);
$set_null = false; foreach($lines as $v) { $alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' '; if ($not_null = preg_match('/NOT NULL/i',$v)) { $v = preg_replace('/NOT NULL/i','',$v); } // this next block doesn't work - there is no way that I can see to // explicitly ask a column to be null using $flds else if ($set_null = preg_match('/NULL/i',$v)) {
< // if they didn't specify not null, see if they explicitely asked for null
> // if they didn't specify not null, see if they explicitly asked for null
// Lookbehind pattern covers the case 'fieldname NULL datatype DEFAULT NULL' // only the first NULL should be removed, not the one specifying // the default value $v = preg_replace('/(?<!DEFAULT)\sNULL/i','',$v); } if (preg_match('/^([^ ]+) .*DEFAULT (\'[^\']+\'|\"[^\"]+\"|[^ ]+)/',$v,$matches)) {
< $existing = $this->MetaColumns($tabname);
> $existing = $this->metaColumns($tabname);
list(,$colname,$default) = $matches; $alter .= $colname; if ($this->connection) {
< $old_coltype = $this->connection->MetaType($existing[strtoupper($colname)]); < } < else {
> $old_coltype = $this->connection->metaType($existing[strtoupper($colname)]); > } else {
$old_coltype = $t; } $v = preg_replace('/^' . preg_quote($colname) . '\s/', '', $v); $t = trim(str_replace('DEFAULT '.$default,'',$v)); // Type change from bool to int if ( $old_coltype == 'L' && $t == 'INTEGER' ) { $sql[] = $alter . ' DROP DEFAULT'; $sql[] = $alter . " TYPE $t USING ($colname::BOOL)::INT"; $sql[] = $alter . " SET DEFAULT $default"; } // Type change from int to bool else if ( $old_coltype == 'I' && $t == 'BOOLEAN' ) { if( strcasecmp('NULL', trim($default)) != 0 ) { $default = $this->connection->qstr($default); } $sql[] = $alter . ' DROP DEFAULT'; $sql[] = $alter . " TYPE $t USING CASE WHEN $colname = 0 THEN false ELSE true END"; $sql[] = $alter . " SET DEFAULT $default"; } // Any other column types conversion else { $sql[] = $alter . " TYPE $t"; $sql[] = $alter . " SET DEFAULT $default"; } } else { // drop default? preg_match ('/^\s*(\S+)\s+(.*)$/',$v,$matches); list (,$colname,$rest) = $matches; $alter .= $colname; $sql[] = $alter . ' TYPE ' . $rest; } # list($colname) = explode(' ',$v); if ($not_null) { // this does not error out if the column is already not null $sql[] = $alter . ' SET NOT NULL'; } if ($set_null) { // this does not error out if the column is already null $sql[] = $alter . ' DROP NOT NULL'; } } return $sql; } // does not have alter column if (!$tableflds) { if ($this->debug) ADOConnection::outp("AlterColumnSQL needs a complete table-definiton for PostgreSQL"); return array(); }
< return $this->_recreate_copy_table($tabname,False,$tableflds,$tableoptions);
> return $this->_recreate_copy_table($tabname, false, $tableflds,$tableoptions);
} /** * Drop one column *
< * Postgres < 7.3 can't do that on it's own, you need to supply the complete defintion of the new table,
> * Postgres < 7.3 can't do that on it's own, you need to supply the complete definition of the new table,
* to allow, recreating the table and copying the content over to the new table * @param string $tabname table-name * @param string $flds column-name and type for the changed column
< * @param string $tableflds complete defintion of the new table, eg. for postgres, default '' < * @param array/ $tableoptions options for the new table see CreateTableSQL, default ''
> * @param string $tableflds complete definition of the new table, eg. for postgres, default '' > * @param array $tableoptions options for the new table {@see CreateTableSQL}, default []
* @return array with SQL strings */
< function DropColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
> function dropColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
{ $has_drop_column = 7.3 <= (float) @$this->serverInfo['version']; if (!$has_drop_column && !$tableflds) {
< if ($this->debug) ADOConnection::outp("DropColumnSQL needs complete table-definiton for PostgreSQL < 7.3");
> if ($this->debug) { > ADOConnection::outp("dropColumnSQL needs complete table-definiton for PostgreSQL < 7.3"); > }
return array(); } if ($has_drop_column) {
< return ADODB_DataDict::DropColumnSQL($tabname, $flds);
> return ADODB_DataDict::dropColumnSQL($tabname, $flds);
} return $this->_recreate_copy_table($tabname,$flds,$tableflds,$tableoptions); } /** * Save the content into a temp. table, drop and recreate the original table and copy the content back in * * We also take care to set the values of the sequenz and recreate the indexes. * All this is done in a transaction, to not loose the content of the table, if something went wrong! * @internal * @param string $tabname table-name * @param string $dropflds column-names to drop
< * @param string $tableflds complete defintion of the new table, eg. for postgres < * @param array/string $tableoptions options for the new table see CreateTableSQL, default ''
> * @param string $tableflds complete definition of the new table, eg. for postgres > * @param array|string $tableoptions options for the new table see CreateTableSQL, default ''
* @return array with SQL strings */ function _recreate_copy_table($tabname,$dropflds,$tableflds,$tableoptions='') { if ($dropflds && !is_array($dropflds)) $dropflds = explode(',',$dropflds); $copyflds = array();
< foreach($this->MetaColumns($tabname) as $fld) { < if (!$dropflds || !in_array($fld->name,$dropflds)) { < // we need to explicit convert varchar to a number to be able to do an AlterColumn of a char column to a nummeric one < if (preg_match('/'.$fld->name.' (I|I2|I4|I8|N|F)/i',$tableflds,$matches) && < in_array($fld->type,array('varchar','char','text','bytea'))) {
> foreach($this->metaColumns($tabname) as $fld) { > if (preg_match('/'.$fld->name.' (\w+)/i', $tableflds, $matches)) { > $new_type = strtoupper($matches[1]); > // AlterColumn of a char column to a nummeric one needs an explicit conversation > if (in_array($new_type, array('I', 'I2', 'I4', 'I8', 'N', 'F')) && > in_array($fld->type, array('varchar','char','text','bytea')) > ) {
$copyflds[] = "to_number($fld->name,'S9999999999999D99')"; } else {
> // other column-type changes needs explicit decode, encode for bytea or cast otherwise $copyflds[] = $fld->name; > $new_actual_type = $this->actualType($new_type); } > if (strtoupper($fld->type) != $new_actual_type) { // identify the sequence name and the fld its on > if ($new_actual_type == 'BYTEA' && $fld->type == 'text') { if ($fld->primary_key && $fld->has_default && > $copyflds[] = "DECODE($fld->name, 'escape')"; preg_match("/nextval\('([^']+)'::text\)/",$fld->default_value,$matches)) { > } elseif ($fld->type == 'bytea' && $new_actual_type == 'TEXT') { $seq_name = $matches[1]; > $copyflds[] = "ENCODE($fld->name, 'escape')"; $seq_fld = $fld->name; > } else { } > $copyflds[] = "CAST($fld->name AS $new_actual_type)"; } > } } > } $copyflds = implode(', ',$copyflds); > } > } else {
< preg_match("/nextval\('([^']+)'::text\)/",$fld->default_value,$matches)) {
> preg_match("/nextval\('([^']+)'::(text|regclass)\)/", $fld->default_value, $matches)) {
< }
$aSql[] = "SELECT * INTO TEMPORARY TABLE $tempname FROM $tabname";
< $aSql = array_merge($aSql,$this->DropTableSQL($tabname)); < $aSql = array_merge($aSql,$this->CreateTableSQL($tabname,$tableflds,$tableoptions));
> $aSql = array_merge($aSql,$this->dropTableSQL($tabname)); > $aSql = array_merge($aSql,$this->createTableSQL($tabname, $tableflds, $tableoptions));
$aSql[] = "INSERT INTO $tabname SELECT $copyflds FROM $tempname"; if ($seq_name && $seq_fld) { // if we have a sequence we need to set it again $seq_name = $tabname.'_'.$seq_fld.'_seq'; // has to be the name of the new implicit sequence $aSql[] = "SELECT setval('$seq_name',MAX($seq_fld)) FROM $tabname"; } $aSql[] = "DROP TABLE $tempname";
< // recreate the indexes, if they not contain one of the droped columns < foreach($this->MetaIndexes($tabname) as $idx_name => $idx_data) < {
> // recreate the indexes, if they not contain one of the dropped columns > foreach($this->metaIndexes($tabname) as $idx_name => $idx_data) {
if (substr($idx_name,-5) != '_pkey' && (!$dropflds || !count(array_intersect($dropflds,$idx_data['columns'])))) {
< $aSql = array_merge($aSql,$this->CreateIndexSQL($idx_name,$tabname,$idx_data['columns'], < $idx_data['unique'] ? array('UNIQUE') : False));
> $aSql = array_merge($aSql,$this->createIndexSQL($idx_name, $tabname, $idx_data['columns'], > $idx_data['unique'] ? array('UNIQUE') : false));
} } $aSql[] = 'COMMIT'; return $aSql; }
< function DropTableSQL($tabname)
> function dropTableSQL($tabname)
{
< $sql = ADODB_DataDict::DropTableSQL($tabname); < < $drop_seq = $this->_DropAutoIncrement($tabname); < if ($drop_seq) $sql[] = $drop_seq;
> $sql = ADODB_DataDict::dropTableSQL($tabname);
> $drop_seq = $this->_dropAutoIncrement($tabname); return $sql; > if ($drop_seq) { } > $sql[] = $drop_seq; > }
// return string must begin with space
< function _CreateSuffix($fname, &$ftype, $fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
> function _createSuffix($fname, &$ftype, $fnotnull, $fdefault, $fautoinc, $fconstraint, $funsigned)
{ if ($fautoinc) { $ftype = 'SERIAL'; return ''; } $suffix = ''; if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault"; if ($fnotnull) $suffix .= ' NOT NULL'; if ($fconstraint) $suffix .= ' '.$fconstraint; return $suffix; }
< // search for a sequece for the given table (asumes the seqence-name contains the table-name!)
> // search for a sequence for the given table (asumes the seqence-name contains the table-name!)
// if yes return sql to drop it // this is still necessary if postgres < 7.3 or the SERIAL was created on an earlier version!!!
< function _DropAutoIncrement($tabname)
> function _dropAutoIncrement($tabname)
{ $tabname = $this->connection->quote('%'.$tabname.'%');
< $seq = $this->connection->GetOne("SELECT relname FROM pg_class WHERE NOT relname ~ 'pg_.*' AND relname LIKE $tabname AND relkind='S'");
> $seq = $this->connection->getOne("SELECT relname FROM pg_class WHERE NOT relname ~ 'pg_.*' AND relname LIKE $tabname AND relkind='S'");
< // check if a tables depends on the sequenz and it therefor cant and dont need to be droped separatly < if (!$seq || $this->connection->GetOne("SELECT relname FROM pg_class JOIN pg_depend ON pg_class.relfilenode=pg_depend.objid WHERE relname='$seq' AND relkind='S' AND deptype='i'")) { < return False;
> // check if a tables depends on the sequence and it therefore can't and don't need to be dropped separately > if (!$seq || $this->connection->getOne("SELECT relname FROM pg_class JOIN pg_depend ON pg_class.relfilenode=pg_depend.objid WHERE relname='$seq' AND relkind='S' AND deptype='i'")) { > return false;
} return "DROP SEQUENCE ".$seq; }
< function RenameTableSQL($tabname,$newname)
> function renameTableSQL($tabname, $newname)
{ if (!empty($this->schema)) {
< $rename_from = $this->TableName($tabname);
> $rename_from = $this->tableName($tabname);
$schema_save = $this->schema; $this->schema = false;
< $rename_to = $this->TableName($newname);
> $rename_to = $this->tableName($newname);
$this->schema = $schema_save; return array (sprintf($this->renameTable, $rename_from, $rename_to)); }
< return array (sprintf($this->renameTable, $this->TableName($tabname),$this->TableName($newname)));
> return array (sprintf($this->renameTable, $this->tableName($tabname), $this->tableName($newname)));
} /* CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ] | table_constraint } [, ... ] ) [ INHERITS ( parent_table [, ... ] ) ] [ WITH OIDS | WITHOUT OIDS ] where column_constraint is: [ CONSTRAINT constraint_name ] { NOT NULL | NULL | UNIQUE | PRIMARY KEY | CHECK (expression) | REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] and table_constraint is: [ CONSTRAINT constraint_name ] { UNIQUE ( column_name [, ... ] ) | PRIMARY KEY ( column_name [, ... ] ) | CHECK ( expression ) | FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] */ /* CREATE [ UNIQUE ] INDEX index_name ON table [ USING acc_method ] ( column [ ops_name ] [, ...] ) [ WHERE predicate ] CREATE [ UNIQUE ] INDEX index_name ON table [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) [ WHERE predicate ] */
< function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
> function _indexSQL($idxname, $tabname, $flds, $idxoptions)
{ $sql = array(); if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) { $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
< if ( isset($idxoptions['DROP']) )
> if ( isset($idxoptions['DROP']) ) {
return $sql; }
> }
if ( empty ($flds) ) { return $sql; } $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : ''; $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' ';
< if (isset($idxoptions['HASH']))
> if (isset($idxoptions['HASH'])) {
$s .= 'USING HASH ';
> }
< if ( isset($idxoptions[$this->upperName]) )
> if (isset($idxoptions[$this->upperName])) {
$s .= $idxoptions[$this->upperName];
> }
< if ( is_array($flds) )
> if (is_array($flds)) {
$flds = implode(', ',$flds);
> }
$s .= '(' . $flds . ')'; $sql[] = $s; return $sql; }
< function _GetSize($ftype, $ty, $fsize, $fprec)
> function _getSize($ftype, $ty, $fsize, $fprec, $options=false)
{ if (strlen($fsize) && $ty != 'X' && $ty != 'B' && $ty != 'I' && strpos($ftype,'(') === false) { $ftype .= "(".$fsize; if (strlen($fprec)) $ftype .= ",".$fprec; $ftype .= ')'; }
> return $ftype; > /* } > * Handle additional options } > */ > if (is_array($options)) { > foreach($options as $type=>$value) { > switch ($type) { > case 'ENUM': > $ftype .= '(' . $value . ')'; > break; > default: > } > } > }
> > function changeTableSQL($tablename, $flds, $tableoptions = false, $dropOldFlds=false) > { > global $ADODB_FETCH_MODE; > parent::changeTableSQL($tablename, $flds); > $save = $ADODB_FETCH_MODE; > $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; > if ($this->connection->fetchMode !== false) { > $savem = $this->connection->setFetchMode(false); > } > > // check table exists > $save_handler = $this->connection->raiseErrorFn; > $this->connection->raiseErrorFn = ''; > $cols = $this->metaColumns($tablename); > $this->connection->raiseErrorFn = $save_handler; > > if (isset($savem)) { > $this->connection->setFetchMode($savem); > } > $ADODB_FETCH_MODE = $save; > > $sqlResult=array(); > if ( empty($cols)) { > $sqlResult=$this->createTableSQL($tablename, $flds, $tableoptions); > } else { > $sqlResultAdd = $this->addColumnSQL($tablename, $flds); > $sqlResultAlter = $this->alterColumnSQL($tablename, $flds, '', $tableoptions); > $sqlResult = array_merge((array)$sqlResultAdd, (array)$sqlResultAlter); > > if ($dropOldFlds) { > // already exists, alter table instead > list($lines,$pkey,$idxs) = $this->_genFields($flds); > // genfields can return FALSE at times > if ($lines == null) { > $lines = array(); > } > $alter = 'ALTER TABLE ' . $this->tableName($tablename); > foreach ( $cols as $id => $v ) { > if ( !isset($lines[$id]) ) { > $sqlResult[] = $alter . $this->dropCol . ' ' . $v->name; > } > } > } > > } > return $sqlResult;
> } // end class