diff --git a/packages/mysql-on-sqlite/src/sqlite/class-wp-mysql-on-sqlite.php b/packages/mysql-on-sqlite/src/sqlite/class-wp-mysql-on-sqlite.php
index 391a1233e..813455340 100644
--- a/packages/mysql-on-sqlite/src/sqlite/class-wp-mysql-on-sqlite.php
+++ b/packages/mysql-on-sqlite/src/sqlite/class-wp-mysql-on-sqlite.php
@@ -2925,14 +2925,22 @@ private function execute_create_table_statement( WP_Parser_Node $node ): void {
 
 		// Handle IF NOT EXISTS.
 		if ( $subnode->has_child_node( 'ifNotExists' ) ) {
-			$tables_table = $this->information_schema_builder->get_table_name( $table_is_temporary, 'tables' );
-			$table_exists = $this->execute_sqlite_query(
-				sprintf(
-					'SELECT 1 FROM %s WHERE table_schema = ? AND table_name = ?',
-					$this->quote_sqlite_identifier( $tables_table )
-				),
-				array( $this->get_saved_db_name(), $table_name )
-			)->fetchColumn();
+			if ( $table_is_temporary ) {
+				/*
+				 * The temporary information schema tables are created with the
+				 * first temporary table of a session, so they may not exist yet.
+				 */
+				$table_exists = $this->information_schema_builder->temporary_table_exists( $table_name );
+			} else {
+				$tables_table = $this->information_schema_builder->get_table_name( false, 'tables' );
+				$table_exists = $this->execute_sqlite_query(
+					sprintf(
+						'SELECT 1 FROM %s WHERE table_schema = ? AND table_name = ?',
+						$this->quote_sqlite_identifier( $tables_table )
+					),
+					array( $this->get_saved_db_name(), $table_name )
+				)->fetchColumn();
+			}
 
 			if ( $table_exists ) {
 				$this->last_result_statement = $this->create_result_statement_from_data( array(), array() );
diff --git a/packages/mysql-on-sqlite/src/sqlite/class-wp-sqlite-information-schema-builder.php b/packages/mysql-on-sqlite/src/sqlite/class-wp-sqlite-information-schema-builder.php
index f4770b21e..bbd3728fb 100644
--- a/packages/mysql-on-sqlite/src/sqlite/class-wp-sqlite-information-schema-builder.php
+++ b/packages/mysql-on-sqlite/src/sqlite/class-wp-sqlite-information-schema-builder.php
@@ -781,7 +781,16 @@ public function record_drop_table( WP_Parser_Node $node ): void {
 		$table_refs = $child_node->get_first_child_node( 'tableRefList' )->get_child_nodes();
 		foreach ( $table_refs as $table_ref ) {
 			$table_name         = $this->get_table_name_from_node( $table_ref );
-			$table_is_temporary = $has_temporary_keyword || $this->temporary_table_exists( $table_name );
+			$table_is_temporary = $this->temporary_table_exists( $table_name );
+
+			/*
+			 * DROP TEMPORARY TABLE drops only temporary tables. When there is no
+			 * such table, there is nothing to record. The temporary information
+			 * schema tables may not even exist yet.
+			 */
+			if ( $has_temporary_keyword && ! $table_is_temporary ) {
+				continue;
+			}
 
 			$this->delete_values(
 				$this->get_table_name( $table_is_temporary, 'tables' ),
diff --git a/packages/mysql-on-sqlite/tests/WP_MySQL_On_SQLite_Tests.php b/packages/mysql-on-sqlite/tests/WP_MySQL_On_SQLite_Tests.php
index b81d767ec..8a9446781 100644
--- a/packages/mysql-on-sqlite/tests/WP_MySQL_On_SQLite_Tests.php
+++ b/packages/mysql-on-sqlite/tests/WP_MySQL_On_SQLite_Tests.php
@@ -4433,6 +4433,68 @@ public function testCreateTemporaryTableIfNotExists(): void {
 		);
 	}
 
+	public function testCreateTemporaryTableIfNotExistsAsFirstTemporaryTable(): void {
+		// No temporary table exists in this session yet.
+		$this->assertQuery(
+			'CREATE TEMPORARY TABLE IF NOT EXISTS t (ID INTEGER, name TEXT)'
+		);
+		$this->assertQuery( "INSERT INTO t (ID, name) VALUES (1, 'a')" );
+
+		// A repeated statement is a no-op and keeps the existing data,
+		// also when the table name is cased differently.
+		$this->assertQuery(
+			'CREATE TEMPORARY TABLE IF NOT EXISTS t (ID INTEGER, name TEXT)'
+		);
+		$this->assertQuery(
+			'CREATE TEMPORARY TABLE IF NOT EXISTS T (ID INTEGER, name TEXT)'
+		);
+		$result = $this->assertQuery( 'SELECT ID, name FROM t' );
+		$this->assertEquals(
+			array(
+				(object) array(
+					'ID'   => '1',
+					'name' => 'a',
+				),
+			),
+			$result
+		);
+	}
+
+	public function testCreateTemporaryTableIfNotExistsWithStandardTableOfSameName(): void {
+		$this->assertQuery( 'CREATE TABLE t (a INT)' );
+
+		// The standard table doesn't prevent creating the temporary table.
+		$this->assertQuery( 'CREATE TEMPORARY TABLE IF NOT EXISTS t (b INT)' );
+		$result = $this->assertQuery( 'SHOW COLUMNS FROM t' );
+		$this->assertCount( 1, $result );
+		$this->assertEquals( 'b', $result[0]->Field );
+
+		// The standard table is unchanged.
+		$this->assertQuery( 'DROP TEMPORARY TABLE t' );
+		$result = $this->assertQuery( 'SHOW COLUMNS FROM t' );
+		$this->assertCount( 1, $result );
+		$this->assertEquals( 'a', $result[0]->Field );
+	}
+
+	public function testDropTemporaryTableIfExistsAsFirstTemporaryTable(): void {
+		// No temporary table exists in this session yet.
+		$this->assertQuery( 'DROP TEMPORARY TABLE IF EXISTS t' );
+
+		// A standard table with the same name is not dropped.
+		$this->assertQuery( 'CREATE TABLE t (a INT)' );
+		$this->assertQuery( 'DROP TEMPORARY TABLE IF EXISTS t' );
+		$result = $this->assertQuery( 'SHOW COLUMNS FROM t' );
+		$this->assertCount( 1, $result );
+		$this->assertEquals( 'a', $result[0]->Field );
+	}
+
+	public function testDropTemporaryTableAsFirstTemporaryTable(): void {
+		// No temporary table exists in this session yet.
+		$this->expectException( WP_MySQL_On_SQLite_Exception::class );
+		$this->expectExceptionMessage( "Table 'temp.t' doesn't exist" );
+		$this->assertQuery( 'DROP TEMPORARY TABLE t' );
+	}
+
 	public function testTranslatesComplexDelete() {
 		$this->sqlite->query(
 			"CREATE TABLE wptests_dummy (