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new method hasTable(), beautify some sql statements

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This commit is contained in:
Uwe Steinmann 2021-01-04 21:45:16 +01:00
parent 24db93eb36
commit 40adb027db
1 changed files with 29 additions and 2 deletions
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31
SeedDMS_Core/Core/inc.DBAccessPDO.php
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@ -118,10 +118,10 @@ class SeedDMS_Core_DatabaseAccess {
function TableList() { /* {{{ */ function TableList() { /* {{{ */
switch($this->_driver) { switch($this->_driver) {
case 'mysql': case 'mysql':
$sql = "select TABLE_NAME as name from information_schema.tables where TABLE_SCHEMA='".$this->_database."' and TABLE_TYPE='BASE TABLE'"; $sql = "SELECT `TABLE_NAME` AS `name` FROM `information_schema`.`tables` WHERE `TABLE_SCHEMA`='".$this->_database."' AND `TABLE_TYPE`='BASE TABLE'";
break; break;
case 'sqlite': case 'sqlite':
$sql = "select tbl_name as name from sqlite_master where type='table'"; $sql = "SELECT tbl_name AS name FROM sqlite_master WHERE type='table'";
break; break;
case 'pgsql': case 'pgsql':
$sql = "select tablename as name from pg_catalog.pg_tables where schemaname='public'"; $sql = "select tablename as name from pg_catalog.pg_tables where schemaname='public'";
@ -136,6 +136,33 @@ class SeedDMS_Core_DatabaseAccess {
return $res; return $res;
} /* }}} */ } /* }}} */
/**
* Check if database has a table
*
* This function will check if the database has a table with the given table name
*
* @return bool true if table exists, otherwise false
*/
function hasTable($name) { /* {{{ */
switch($this->_driver) {
case 'mysql':
$sql = "SELECT `TABLE_NAME` AS `name` FROM `information_schema`.`tables` WHERE `TABLE_SCHEMA`='".$this->_database."' AND `TABLE_TYPE`='BASE TABLE' AND `TABLE_NAME`=".$this->qstr($name);
break;
case 'sqlite':
$sql = "SELECT tbl_name AS name FROM sqlite_master WHERE type='table' AND `tbl_name`=".$this->qstr($name);
break;
case 'pgsql':
$sql = "SELECT tablename AS name FROM pg_catalog.pg_tables WHERE schemaname='public' AND tablename=".$this->qstr($name);
break;
default:
return false;
}
$arr = $this->getResultArray($sql);
if($arr)
return true;
return false;
} /* }}} */
/** /**
* Return list of all database views * Return list of all database views
* *