Explicitly disable CREATE TABLE ... [AS] SELECT statements

Author: JanJakes

tests/WP_SQLite_Driver_Translation_Tests.php

@@ -480,7 +480,8 @@ public function testCreateTableWithStandaloneUniqueIndexes(): void {
 		);
 	}
 
-	public function testCreateTableFromSelectQuery(): void {
+	// @TODO: Implement information schema support for CREATE TABLE ... AS SELECT.
+	/*public function testCreateTableFromSelectQuery(): void {
 		// CREATE TABLE AS SELECT ...
 		$this->assertQuery(
 			'CREATE TABLE `t1` AS SELECT * FROM `t2` STRICT',
@@ -493,7 +494,7 @@ public function testCreateTableFromSelectQuery(): void {
 			'CREATE TABLE `t1` AS SELECT * FROM `t2` STRICT',
 			'CREATE TABLE t1 SELECT * FROM t2'
 		);
-	}
+	}*/
 
 	// TODO: IF NOT EXISTS
 	/*public function testCreateTemporaryTable(): void {

wp-includes/sqlite-ast/class-wp-sqlite-driver.php

@@ -1086,14 +1086,22 @@ private function execute_delete_statement( WP_Parser_Node $node ): void {
 	private function execute_create_table_statement( WP_Parser_Node $node ): void {
 		$subnode = $node->get_first_child_node();
 
-		// Handle TEMPORARY and CREATE TABLE ... SELECT.
+		// Handle TEMPORARY keyword.
 		$table_is_temporary = $subnode->has_child_token( WP_MySQL_Lexer::TEMPORARY_SYMBOL );
-		$element_list       = $subnode->get_first_child_node( 'tableElementList' );
+
+		// Handle CREATE TABLE ... [AS] SELECT.
+		$element_list = $subnode->get_first_child_node( 'tableElementList' );
 		if ( null === $element_list ) {
-			$query = $this->translate( $node ) . ' STRICT';
-			$this->execute_sqlite_query( $query );
-			$this->set_result_from_affected_rows();
-			return;
+			/*
+			 * While SQLite supports CREATE TABLE ... AS SELECT statements,
+			 * we need to somehow implement information schema support for
+			 * the tables created in this way.
+			 *
+			 * TODO: Implement information schema support for CREATE TABLE ... AS SELECT.
+			 */
+			throw $this->new_not_supported_exception(
+				'CREATE TABLE ... [AS] SELECT is currently not supported'
+			);
 		}
 
 		// Get table name.