function transform_textfield($table, $field_name, $max_length)
{
    //$table = 'content_type_' . $content_type;
    $column = 'field_' . $field_name . '_value';
    var_dump($table);
    var_dump($column);
    // Update field type
    $new_column = $column;
    $new_definition = array('type' => 'varchar', 'length' => $max_length);
    db_change_field($ret, $table, $column, $new_column, $new_definition);
    // Fetch the current field configuration
    $query_results = db_query("SELECT global_settings FROM {content_node_field} WHERE field_name = 'field_%s'", $field_name);
    // We assume that there is only one entry in the table for each field
    $global_settings = db_result($query_results);
    var_dump($global_settings);
    // This is a serialized PHP array (i.e. stored as a string), so unserialize it
    $data = unserialize($global_settings);
    var_dump($data);
    // Update the max_length entry
    $data['max_length'] = $max_length;
    // Update the field config
    var_dump(serialize($data));
    db_query("UPDATE {content_node_field} SET global_settings = '%s' WHERE field_name = 'field_%s'", serialize($data), $field_name);
}
Beispiel #2
0
 /**
  * Asserts that a field can be changed from one spec to another.
  *
  * @param $old_spec
  *   The beginning field specification.
  * @param $new_spec
  *   The ending field specification.
  */
 protected function assertFieldChange($old_spec, $new_spec, $test_data = NULL)
 {
     $table_name = 'test_table_' . $this->counter++;
     $table_spec = array('fields' => array('serial_column' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE), 'test_field' => $old_spec), 'primary key' => array('serial_column'));
     db_create_table($table_name, $table_spec);
     $this->pass(format_string('Table %table created.', array('%table' => $table_name)));
     // Check the characteristics of the field.
     $this->assertFieldCharacteristics($table_name, 'test_field', $old_spec);
     // Remove inserted rows.
     db_truncate($table_name)->execute();
     if ($test_data) {
         $id = db_insert($table_name)->fields(['test_field'], [$test_data])->execute();
     }
     // Change the field.
     db_change_field($table_name, 'test_field', 'test_field', $new_spec);
     if ($test_data) {
         $field_value = db_select($table_name)->fields($table_name, ['test_field'])->condition('serial_column', $id)->execute()->fetchField();
         $this->assertIdentical($field_value, $test_data);
     }
     // Check the field was changed.
     $this->assertFieldCharacteristics($table_name, 'test_field', $new_spec);
     // Clean-up.
     db_drop_table($table_name);
 }
 /**
  * Asserts that a field can be changed from one spec to another.
  *
  * @param $old_spec
  *   The beginning field specification.
  * @param $new_spec
  *   The ending field specification.
  */
 protected function assertFieldChange($old_spec, $new_spec)
 {
     $table_name = 'test_table_' . $this->counter++;
     $table_spec = array('fields' => array('serial_column' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE), 'test_field' => $old_spec), 'primary key' => array('serial_column'));
     db_create_table($table_name, $table_spec);
     $this->pass(format_string('Table %table created.', array('%table' => $table_name)));
     // Check the characteristics of the field.
     $this->assertFieldCharacteristics($table_name, 'test_field', $old_spec);
     // Remove inserted rows.
     db_truncate($table_name)->execute();
     // Change the field.
     db_change_field($table_name, 'test_field', 'test_field', $new_spec);
     // Check the field was changed.
     $this->assertFieldCharacteristics($table_name, 'test_field', $new_spec);
     // Clean-up.
     db_drop_table($table_name);
 }
function elysia_cron_check_version_update()
{
    $ver = variable_get('elysia_cron_version', 0);
    if ($ver < 20111012) {
        $ver = _ec_variable_get('elysia_cron_version', 0);
    }
    if (!$ver || $ver < 20090218) {
        $unchanged = array('elysia_cron_last_context', 'elysia_cron_last_run', 'elysia_cron_disabled', 'elysia_cron_semaphore', 'elysia_cron_key', 'elysia_cron_allowed_hosts', 'elysia_cron_default_rule', 'elysia_cron_script', 'elysia_cron_runtime_replacement', 'elysia_cron_version');
        $rs = db_query('select * from {variable} where name like "elysia_cron_%%"');
        while ($v = db_fetch_object($rs)) {
            if (!in_array($v->name, $unchanged)) {
                $vn = false;
                if (preg_match('/^elysia_cron_ctx_(.*)_(running|disabled|last_run|last_aborted|abort_count|execution_count|last_execution_time|avg_execution_time|max_execution_time|last_shutdown_time|last_abort_function)/', $v->name, $r)) {
                    switch ($r[2]) {
                        case 'running':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_r';
                            break;
                        case 'disabled':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_d';
                            break;
                        case 'last_run':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_lr';
                            break;
                        case 'last_aborted':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_la';
                            break;
                        case 'abort_count':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_ac';
                            break;
                        case 'execution_count':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_ec';
                            break;
                        case 'last_execution_time':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_let';
                            break;
                        case 'avg_execution_time':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_aet';
                            break;
                        case 'max_execution_time':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_met';
                            break;
                        case 'last_shutdown_time':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_lst';
                            break;
                        case 'last_abort_function':
                            $vn = 'ecc_' . _ec_get_name($r[1]) . '_laf';
                            break;
                    }
                } elseif (preg_match('/^elysia_cron_(.*)_(rule|disabled|context|running|last_run|last_execution_time|execution_count|avg_execution_time|max_execution_time)/', $v->name, $r)) {
                    switch ($r[2]) {
                        case 'rule':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_rul';
                            break;
                        case 'disabled':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_d';
                            break;
                        case 'context':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_c';
                            break;
                        case 'running':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_r';
                            break;
                        case 'last_run':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_lr';
                            break;
                        case 'last_execution_time':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_let';
                            break;
                        case 'execution_count':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_ec';
                            break;
                        case 'avg_execution_time':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_aet';
                            break;
                        case 'max_execution_time':
                            $vn = 'ec_' . _ec_get_name($r[1]) . '_met';
                            break;
                    }
                }
                if ($vn) {
                    variable_set($vn, unserialize($v->value));
                } else {
                    _dco_watchdog('cron', 'Error in update, cant convert %name (value: %value)', array('%name' => $v->name, '%value' => $v->value), WATCHDOG_ERROR);
                }
                variable_del($v->name);
            }
        }
        variable_set('elysia_cron_version', 20090218);
    }
    if ($ver < 20090920) {
        variable_set('elysia_cron_version', 20090920);
    }
    if ($ver < 20100507) {
        if (EC_DRUPAL_VERSION >= 6) {
            // D6
            drupal_install_schema('elysia_cron');
            // In ver 20111020 disabled has been renamed to disable, revert it now
            if (EC_DRUPAL_VERSION >= 7) {
                // D7
                // Must use "$v" for PHP5.3 running D6 version (detect the error even if it doesn't pass here)
                db_change_field($v = 'elysia_cron', 'disable', 'disabled', array('type' => 'int', 'size' => 'tiny', 'not null' => FALSE));
            } elseif (EC_DRUPAL_VERSION >= 6) {
                // D6
                $ret = array();
                db_change_field($ret, 'elysia_cron', 'disable', 'disabled', array('type' => 'int', 'size' => 'tiny', 'not null' => FALSE));
            }
        } else {
            // D5
            switch ($GLOBALS['db_type']) {
                case 'mysqli':
                case 'mysql':
                    db_query("create table if not exists {elysia_cron} (\r\n            name varchar(120) not null,\r\n            disabled tinyint(1) not null default '0',\r\n            rule varchar(32),\r\n            weight int(11) not null default '0',\r\n            context varchar(32),\r\n            running int(11) not null default '0',\r\n            last_run int(11) not null default '0',\r\n            last_aborted tinyint(1) not null default '0',\r\n            abort_count int(11) not null default '0',\r\n            last_abort_function varchar(32),\r\n            last_execution_time int(11) not null default '0',\r\n            execution_count int(11) not null default '0',\r\n            avg_execution_time float(5,2) not null default '0',\r\n            max_execution_time int(11) not null default '0',\r\n            last_shutdown_time int(11) not null default '0',\r\n            primary key (name)\r\n          )");
                    break;
                case 'pgsql':
                    db_query("create table {elysia_cron} (\r\n            name varchar(120) not null,\r\n            disabled smallint not null default '0',\r\n            rule varchar(32),\r\n            weight integer not null default '0',\r\n            context varchar(32),\r\n            running int not null default '0',\r\n            last_run integer not null default '0',\r\n            last_aborted smallint not null default '0',\r\n            abort_count integer not null default '0',\r\n            last_abort_function varchar(32),\r\n            last_execution_time integer not null default '0',\r\n            execution_count integer not null default '0',\r\n            avg_execution_time float not null default '0',\r\n            max_execution_time integer not null default '0',\r\n            last_shutdown_time integer not null default '0',\r\n            primary key (name)\r\n          )");
            }
        }
        $rs = db_query('select * from {variable} where name like "ec_%%" or name like "ecc_%%"');
        $data = array();
        $todelete = array();
        while ($v = db_fetch_object($rs)) {
            $name = false;
            if (preg_match('/^ecc_(.+)_(r|d|lr|la|ac|ec|let|aet|met|lst|laf)/', $v->name, $r)) {
                $name = ':' . $r[1];
            } elseif (preg_match('/^ec_(.+)_(rul|d|c|w|r|lr|let|ec|aet|met)/', $v->name, $r)) {
                $name = $r[1];
            }
            if ($name) {
                if (!isset($data[$name])) {
                    $data[$name] = array('name' => $name);
                }
                switch ($r[2]) {
                    case 'r':
                        $f = 'running';
                        break;
                    case 'd':
                        $f = 'disabled';
                        break;
                    case 'rul':
                        $f = 'rule';
                        break;
                    case 'w':
                        $f = 'weight';
                        break;
                    case 'c':
                        $f = 'context';
                        break;
                    case 'lr':
                        $f = 'last_run';
                        break;
                    case 'la':
                        $f = 'last_aborted';
                        break;
                    case 'ac':
                        $f = 'abort_count';
                        break;
                    case 'laf':
                        $f = 'last_abort_function';
                        break;
                    case 'let':
                        $f = 'last_execution_time';
                        break;
                    case 'ec':
                        $f = 'execution_count';
                        break;
                    case 'aet':
                        $f = 'avg_execution_time';
                        break;
                    case 'met':
                        $f = 'max_execution_time';
                        break;
                    case 'lst':
                        $f = 'last_shutdown_time';
                        break;
                }
                $data[$name][$f] = unserialize($v->value);
                $todelete[] = $v->name;
            }
        }
        $ifields = array('disabled', 'weight', 'running', 'last_run', 'last_aborted', 'abort_count', 'last_execution_time', 'execution_count', 'avg_execution_time', 'max_execution_time', 'last_shutdown_time');
        foreach ($data as $v) {
            foreach ($ifields as $f) {
                if (empty($v[$f])) {
                    $v[$f] = 0;
                }
            }
            db_query("insert into {elysia_cron} (name, disabled, rule, weight, context, running, last_run, last_aborted, abort_count, last_abort_function, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time)\r\n        values ('%s', %d, '%s', %d, '%s', %d, %d, %d, %d, '%s', %d, %d, %f, %d, %d)", $v['name'], $v['disabled'], $v['rule'], $v['weight'], $v['context'], $v['running'], $v['last_run'], $v['last_aborted'], $v['abort_count'], $v['last_abort_function'], $v['last_execution_time'], $v['execution_count'], $v['avg_execution_time'], $v['max_execution_time'], $v['last_shutdown_time']);
        }
        db_query("update {elysia_cron} set context = null where context = ''");
        db_query("update {elysia_cron} set rule = null where rule = ''");
        foreach ($todelete as $v) {
            variable_del($v);
            db_query("DELETE FROM {variable} WHERE name = '%s'", $v);
        }
        variable_set('elysia_cron_version', 20100507);
        unset($GLOBALS['_ec_variables']);
    }
    // D7 VERSION FROM NOW ON...
    if ($ver < 20110323) {
        if (EC_DRUPAL_VERSION >= 7) {
            // D7
            // Must use "$v" for PHP5.3 running D6 version (detect the error even if it doesn't pass here)
            db_change_field($v = 'elysia_cron', 'weight', 'weight', array('type' => 'int', 'not null' => FALSE));
        } elseif (EC_DRUPAL_VERSION >= 6) {
            // D6
            $ret = array();
            db_change_field($ret, 'elysia_cron', 'weight', 'weight', array('type' => 'int', 'not null' => FALSE));
        } else {
            // D5
            db_query("alter table {elysia_cron} change weight weight int(11)");
        }
        variable_set('elysia_cron_version', 20110323);
    }
    if ($ver < 20111007) {
        $default_rules = variable_get('elysia_cron_default_rules', $GLOBALS['elysia_cron_default_rules']);
        if (!empty($default_rules['*/6 * * * *']) && $default_rules['*/6 * * * *'] == 'Every 6 hours') {
            unset($default_rules['*/6 * * * *']);
            $default_rules['0 */6 * * *'] = 'Every 6 hours';
            variable_set('elysia_cron_default_rules', $default_rules);
        }
        variable_set('elysia_cron_version', 20111007);
    }
    if ($ver < 20111012) {
        // I only need to rebuild variable cache, so i just set the new version
        variable_set('elysia_cron_version', 20111012);
    }
    if ($ver < 20111020) {
        if (EC_DRUPAL_VERSION >= 7) {
            // D7
            // Must use "$v" for PHP5.3 running D6 version (detect the error even if it doesn't pass here)
            db_change_field($v = 'elysia_cron', 'disabled', 'disable', array('type' => 'int', 'size' => 'tiny', 'not null' => FALSE));
        } elseif (EC_DRUPAL_VERSION >= 6) {
            // D6
            $ret = array();
            db_change_field($ret, 'elysia_cron', 'disabled', 'disable', array('type' => 'int', 'size' => 'tiny', 'not null' => FALSE));
        } else {
            // D5
            db_query("alter table {elysia_cron} change disabled disable tinyint(1)");
        }
        db_query("update {elysia_cron} set disable = NULL where disable = 0");
        variable_set('elysia_cron_version', 20111020);
    }
}
<?php

// from http://drupal.stackexchange.com/questions/79378/changing-a-field-type-from-integer-to-decimal
// Change this to your field name, obvs.
$field = 'field_height';
// Update the storage tables
$tables = array('field_data', 'field_revision');
foreach ($tables as $table) {
    $tablename = $table . '_' . $field;
    $fieldname = $field . '_value';
    db_change_field($tablename, $fieldname, $fieldname, array('type' => 'numeric', 'precision' => 10, 'scale' => 1, 'not null' => FALSE));
}
// Fetch the current field configuration
$field_config = db_query("SELECT data FROM {field_config} WHERE field_name = :field_name", array(':field_name' => $field))->fetchObject();
$data = unserialize($field_config->data);
// Update the settings entry
$data['settings'] = array('precision' => 10, 'scale' => 1, 'decimal_separator' => '.');
// Store the new field config, update the field type at the same time
db_update('field_config')->fields(array('data' => serialize($data), 'type' => 'number_decimal'))->condition('field_name', $field)->execute();
// If you are confident about what bundles have instances of this field you can
// go straight to the db_query with a hardcoded entity_type / bundle.
$instances = field_info_field_map();
foreach ($instances[$field]['bundles'] as $entity_type => $bundles) {
    foreach ($bundles as $bundle) {
        // Fetch the field instance data
        $field_config_instance = db_query("SELECT data FROM {field_config_instance}\n                                       WHERE field_name = :field_name\n                                       AND entity_type = :entity_type\n                                       AND bundle = :bundle", array(':field_name' => $field, ':entity_type' => $entity_type, ':bundle' => $bundle))->fetchObject();
        $data = unserialize($field_config_instance->data);
        // Update it with the new display type
        $data['display']['default']['type'] = 'number_decimal';
        // Store it back to the database
        db_update('field_config_instance')->fields(array('data' => serialize($data)))->condition('field_name', $field)->condition('entity_type', $entity_type)->condition('bundle', $bundle)->execute();
 /**
  * Change the machine name of an existing field.
  *
  * @param $newName string
  *
  * NOTE: This might need additional adjustments for contrib modules
  *   that store field_names (ie. views, context, cck_blocks).
  */
 public function rename($newName)
 {
     $o = $this->field_name;
     $n = $newName;
     db_query("UPDATE field_config SET field_name='{$n}' WHERE field_name='{$o}'");
     db_query("UPDATE field_config_instance SET field_name='{$n}' WHERE field_name='{$o}'");
     db_query("RENAME TABLE `field_data_{$o}` TO `field_data_{$n}`;");
     db_query("RENAME TABLE `field_revision_{$o}` TO `field_revision_{$n}`;");
     \module_load_install($this->module);
     $function = $this->module . '_field_schema';
     $schema = $function(array('type' => $this->type));
     foreach ($schema['columns'] as $column => $specs) {
         db_change_field("field_data_{$n}", "{$o}_{$column}", "{$n}_{$column}", $specs);
         db_change_field("field_revision_{$n}", "{$o}_{$column}", "{$n}_{$column}", $specs);
     }
     $this->field_name = $n;
 }
 public static function changeSchema(array &$field, array $column_renames = array())
 {
     // Update the field schema
     $old_schema = array_intersect_key($field, array('columns' => '', 'indexes' => '', 'foreign keys' => ''));
     module_load_install($field['module']);
     $new_schema = (array) module_invoke($field['module'], 'field_schema', $field);
     $new_schema += array('columns' => array(), 'indexes' => array(), 'foreign keys' => array());
     $field['data']['columns'] = $new_schema['columns'];
     $field['data']['indexes'] = $new_schema['indexes'];
     $field['data']['foreign keys'] = $new_schema['foreign keys'];
     $data_table = _field_sql_storage_tablename($field);
     $revision_table = _field_sql_storage_revision_tablename($field);
     // Validate that all the columns described in the existing schema actually exist.
     foreach (array_keys($old_schema['columns']) as $old_column) {
         $old_column_name = _field_sql_storage_columnname($field['field_name'], $old_column);
         if (!db_field_exists($data_table, $old_column_name)) {
             throw new Exception();
         }
         if (!db_field_exists($revision_table, $old_column_name)) {
             throw new Exception();
         }
         // Attempt to re-use any columns that have the same name.
         // This can be skipped by setting $column_renames['column-name'] = FALSE;
         if (!empty($new_schema['columns'][$old_column]) && !isset($column_renames[$old_column])) {
             $column_renames[$old_column] = $old_column;
         }
     }
     // Validate that any columns to be renamed actually exist.
     foreach ($column_renames as $old_column => $new_column) {
         if (!isset($old_schema['columns'][$old_column])) {
             throw new Exception("Cannot rename field {$field['field_name']} column {$old_column} because it does not exist in the old schema.");
         }
         if (!isset($new_schema['columns'][$new_column])) {
             throw new Exception("Cannot rename field {$field['field_name']} column {$old_column} to {$new_column} because it does not exist in the new schema.");
         }
     }
     // Remove all existing indexes.
     foreach ($old_schema['indexes'] as $index => $index_fields) {
         $index_name = _field_sql_storage_indexname($field['field_name'], $index);
         if (db_index_exists($data_table, $index_name)) {
             watchdog('helper', "Dropped index {$data_table}.{$index_name}");
             db_drop_index($data_table, $index_name);
         }
         if (db_index_exists($revision_table, $index_name)) {
             watchdog('helper', "Dropped index {$revision_table}.{$index_name}");
             db_drop_index($revision_table, $index_name);
         }
     }
     // Rename any columns.
     foreach ($column_renames as $old_column => $new_column) {
         $old_column_name = _field_sql_storage_columnname($field['field_name'], $old_column);
         if ($new_column === FALSE) {
             db_drop_field($data_table, $old_column_name);
             watchdog('helper', "Dropped column {$data_table}.{$old_column_name}");
             db_drop_field($revision_table, $old_column_name);
             watchdog('helper', "Dropped column {$revision_table}.{$old_column_name}");
             unset($old_schema['columns'][$old_column]);
         } else {
             $new_column_name = _field_sql_storage_columnname($field['field_name'], $new_column);
             db_change_field($data_table, $old_column_name, $new_column_name, $new_schema['columns'][$new_column]);
             watchdog('helper', "Changed column {$data_table}.{$old_column_name}<br/><pre>" . print_r($new_schema['columns'][$new_column], TRUE) . '</pre>');
             db_change_field($revision_table, $old_column_name, $new_column_name, $new_schema['columns'][$new_column]);
             watchdog('helper', "Changed column {$revision_table}.{$old_column_name}<br/><pre>" . print_r($new_schema['columns'][$new_column], TRUE) . '</pre>');
             // Remove these fields so they aren't removed or added in the code below.
             unset($new_schema['columns'][$new_column]);
             unset($old_schema['columns'][$old_column]);
         }
     }
     // Remove any old columns.
     $old_columns = array_diff_key($old_schema['columns'], $new_schema['columns']);
     foreach (array_keys($old_columns) as $old_column) {
         $old_column_name = _field_sql_storage_columnname($field['field_name'], $old_column);
         db_drop_field($data_table, $old_column_name);
         watchdog('helper', "Dropped column {$data_table}.{$old_column_name}");
         db_drop_field($revision_table, $old_column_name);
         watchdog('helper', "Dropped column {$revision_table}.{$old_column_name}");
     }
     // Add any new columns.
     $new_columns = array_diff_key($new_schema['columns'], $old_schema['columns']);
     foreach (array_keys($new_columns) as $new_column) {
         $new_column_name = _field_sql_storage_columnname($field['field_name'], $new_column);
         db_add_field($data_table, $new_column_name, $new_schema['columns'][$new_column]);
         watchdog('helper', "Added column {$data_table}.{$new_column_name}");
         db_add_field($revision_table, $new_column_name, $new_schema['columns'][$new_column]);
         watchdog('helper', "Added column {$revision_table}.{$new_column_name}");
     }
     // Re-add indexes.
     foreach ($new_schema['indexes'] as $index => $index_fields) {
         foreach ($index_fields as &$index_field) {
             if (is_array($index_field)) {
                 $index_field[0] = _field_sql_storage_columnname($field['field_name'], $index_field[0]);
             } else {
                 $index_field = _field_sql_storage_columnname($field['field_name'], $index_field);
             }
         }
         $index_name = _field_sql_storage_indexname($field['field_name'], $index);
         db_add_index($data_table, $index_name, $index_fields);
         watchdog('helper', "Added index {$data_table}.{$index_name}<br/><pre>" . print_r($index_fields, TRUE) . '</pre>');
         db_add_index($revision_table, $index_name, $index_fields);
         watchdog('helper', "Added index {$revision_table}.{$index_name}<br/><pre>" . print_r($index_fields, TRUE) . '</pre>');
     }
 }
 /**
  * Tests database interactions.
  */
 function testSchema()
 {
     // Try creating a table.
     $table_specification = array('description' => 'Schema table description may contain "quotes" and could be long—very long indeed.', 'fields' => array('id' => array('type' => 'int', 'default' => NULL), 'test_field' => array('type' => 'int', 'not null' => TRUE, 'description' => 'Schema table description may contain "quotes" and could be long—very long indeed. There could be "multiple quoted regions".'), 'test_field_string' => array('type' => 'varchar', 'length' => 20, 'not null' => TRUE, 'default' => "'\"funky default'\"", 'description' => 'Schema column description for string.')));
     db_create_table('test_table', $table_specification);
     // Assert that the table exists.
     $this->assertTrue(db_table_exists('test_table'), 'The table exists.');
     // Assert that the table comment has been set.
     $this->checkSchemaComment($table_specification['description'], 'test_table');
     // Assert that the column comment has been set.
     $this->checkSchemaComment($table_specification['fields']['test_field']['description'], 'test_table', 'test_field');
     // An insert without a value for the column 'test_table' should fail.
     $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
     // Add a default value to the column.
     db_field_set_default('test_table', 'test_field', 0);
     // The insert should now succeed.
     $this->assertTrue($this->tryInsert(), 'Insert with a default succeeded.');
     // Remove the default.
     db_field_set_no_default('test_table', 'test_field');
     // The insert should fail again.
     $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
     // Test for fake index and test for the boolean result of indexExists().
     $index_exists = Database::getConnection()->schema()->indexExists('test_table', 'test_field');
     $this->assertIdentical($index_exists, FALSE, 'Fake index does not exists');
     // Add index.
     db_add_index('test_table', 'test_field', array('test_field'));
     // Test for created index and test for the boolean result of indexExists().
     $index_exists = Database::getConnection()->schema()->indexExists('test_table', 'test_field');
     $this->assertIdentical($index_exists, TRUE, 'Index created.');
     // Rename the table.
     db_rename_table('test_table', 'test_table2');
     // Index should be renamed.
     $index_exists = Database::getConnection()->schema()->indexExists('test_table2', 'test_field');
     $this->assertTrue($index_exists, 'Index was renamed.');
     // Copy the schema of the table.
     db_copy_table_schema('test_table2', 'test_table3');
     // Index should be copied.
     $index_exists = Database::getConnection()->schema()->indexExists('test_table3', 'test_field');
     $this->assertTrue($index_exists, 'Index was copied.');
     // Data should still exist on the old table but not on the new one.
     $count = db_select('test_table2')->countQuery()->execute()->fetchField();
     $this->assertEqual($count, 1, 'The old table still has its content.');
     $count = db_select('test_table3')->countQuery()->execute()->fetchField();
     $this->assertEqual($count, 0, 'The new table has no content.');
     // Ensure that the proper exceptions are thrown for db_copy_table_schema().
     $fail = FALSE;
     try {
         db_copy_table_schema('test_table4', 'test_table5');
     } catch (SchemaObjectDoesNotExistException $e) {
         $fail = TRUE;
     }
     $this->assertTrue($fail, 'Ensure that db_copy_table_schema() throws an exception when the source table does not exist.');
     $fail = FALSE;
     try {
         db_copy_table_schema('test_table2', 'test_table3');
     } catch (SchemaObjectExistsException $e) {
         $fail = TRUE;
     }
     $this->assertTrue($fail, 'Ensure that db_copy_table_schema() throws an exception when the destination table already exists.');
     // We need the default so that we can insert after the rename.
     db_field_set_default('test_table2', 'test_field', 0);
     $this->assertFalse($this->tryInsert(), 'Insert into the old table failed.');
     $this->assertTrue($this->tryInsert('test_table2'), 'Insert into the new table succeeded.');
     // We should have successfully inserted exactly two rows.
     $count = db_query('SELECT COUNT(*) FROM {test_table2}')->fetchField();
     $this->assertEqual($count, 2, 'Two fields were successfully inserted.');
     // Try to drop the table.
     db_drop_table('test_table2');
     $this->assertFalse(db_table_exists('test_table2'), 'The dropped table does not exist.');
     // Recreate the table.
     db_create_table('test_table', $table_specification);
     db_field_set_default('test_table', 'test_field', 0);
     db_add_field('test_table', 'test_serial', array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'description' => 'Added column description.'));
     // Assert that the column comment has been set.
     $this->checkSchemaComment('Added column description.', 'test_table', 'test_serial');
     // Change the new field to a serial column.
     db_change_field('test_table', 'test_serial', 'test_serial', array('type' => 'serial', 'not null' => TRUE, 'description' => 'Changed column description.'), array('primary key' => array('test_serial')));
     // Assert that the column comment has been set.
     $this->checkSchemaComment('Changed column description.', 'test_table', 'test_serial');
     $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
     $max1 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
     $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
     $max2 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
     $this->assertTrue($max2 > $max1, 'The serial is monotone.');
     $count = db_query('SELECT COUNT(*) FROM {test_table}')->fetchField();
     $this->assertEqual($count, 2, 'There were two rows.');
     // Use database specific data type and ensure that table is created.
     $table_specification = array('description' => 'Schema table description.', 'fields' => array('timestamp' => array('mysql_type' => 'timestamp', 'pgsql_type' => 'timestamp', 'sqlite_type' => 'datetime', 'not null' => FALSE, 'default' => NULL)));
     try {
         db_create_table('test_timestamp', $table_specification);
     } catch (\Exception $e) {
     }
     $this->assertTrue(db_table_exists('test_timestamp'), 'Table with database specific datatype was created.');
 }