WPDB: Remove the addition of STRICT_ALL_TABLES, added in [30400]. This proved to be incompatible with too many plugins, as well as being incompatible with MySQL 5.7.

See #21212.

Built from https://develop.svn.wordpress.org/trunk@30587


git-svn-id: http://core.svn.wordpress.org/trunk@30577 1a063a9b-81f0-0310-95a4-ce76da25c4cd

Author: pento

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-beta2-30586';
+$wp_version = '4.1-beta2-30587';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-includes/wp-db.php

@@ -566,16 +566,8 @@ class wpdb {
 	 * @access protected
 	 * @var array
 	 */
-	protected $incompatible_modes = array( 'NO_ZERO_DATE', 'ONLY_FULL_GROUP_BY', 'TRADITIONAL' );
-
-	/**
-	 * A list of required SQL modes.
-	 *
-	 * @since 4.1.0
-	 * @access protected
-	 * @var array
-	 */
-	protected $required_modes = array( 'STRICT_ALL_TABLES' );
+	protected $incompatible_modes = array( 'NO_ZERO_DATE', 'ONLY_FULL_GROUP_BY',
+		'STRICT_TRANS_TABLES', 'STRICT_ALL_TABLES', 'TRADITIONAL' );
 
 	/**
 	 * Whether to use mysqli over mysql.
@@ -786,12 +778,31 @@ public function set_charset( $dbh, $charset = null, $collate = null ) {
 	 */
 	public function set_sql_mode( $modes = array() ) {
 		if ( empty( $modes ) ) {
-			$modes = $this->get_var( "SELECT @@SESSION.sql_mode" );
-			if ( $modes ) {
-				$modes = $original_modes = explode( ',', $modes );
+			if ( $this->use_mysqli ) {
+				$res = mysqli_query( $this->dbh, 'SELECT @@SESSION.sql_mode' );
+			} else {
+				$res = mysql_query( 'SELECT @@SESSION.sql_mode', $this->dbh );
+			}
+
+			if ( empty( $res ) ) {
+				return;
+			}
+
+			if ( $this->use_mysqli ) {
+				$modes_array = mysqli_fetch_array( $res );
+				if ( empty( $modes_array[0] ) ) {
+					return;
+				}
+				$modes_str = $modes_array[0];
 			} else {
-				$modes = $original_modes = array();
+				$modes_str = mysql_result( $res, 0 );
 			}
+
+			if ( empty( $modes_str ) ) {
+				return;
+			}
+
+			$modes = explode( ',', $modes_str );
 		}
 
 		$modes = array_change_key_case( $modes, CASE_UPPER );
@@ -805,32 +816,18 @@ public function set_sql_mode( $modes = array() ) {
 		 */
 		$incompatible_modes = (array) apply_filters( 'incompatible_sql_modes', $this->incompatible_modes );
 
-		/**
-		 * Filter the list of required SQL modes to include.
-		 *
-		 * @since 4.1.0
-		 *
-		 * @param array $required_modes An array of required modes.
-		 */
-		$required_modes = (array) apply_filters( 'required_sql_modes', $this->required_modes );
-
-		$modes = array_diff( $modes, $incompatible_modes );
-		$modes = array_unique( array_merge( $modes, $required_modes ) );
-
-		// Don't run SET SESSION if we have nothing to change.
-		if ( isset( $original_modes ) ) {
-			sort( $original_modes );
-			sort( $modes );
-			if ( $original_modes === $modes ) {
-				return;
+		foreach( $modes as $i => $mode ) {
+			if ( in_array( $mode, $incompatible_modes ) ) {
+				unset( $modes[ $i ] );
 			}
 		}
 
 		$modes_str = implode( ',', $modes );
 
-		$this->query( "SET SESSION sql_mode='$modes_str'" );
-		if ( $this->last_error ) {
-			dead_db();
+		if ( $this->use_mysqli ) {
+			mysqli_query( $this->dbh, "SET SESSION sql_mode='$modes_str'" );
+		} else {
+			mysql_query( "SET SESSION sql_mode='$modes_str'", $this->dbh );
 		}
 	}