How many Mixed Doubles won when Oliver Pongratz won the Men's Singles?
CREATE TABLE table_12164707_1 (mixed_doubles VARCHAR, mens_singles VARCHAR)
SELECT COUNT(mixed_doubles) FROM table_12164707_1 WHERE mens_singles = "Oliver Pongratz"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12164707_1 (mixed_doubles VARCHAR, mens_singles VARCHAR) Question: How many Mixed Doubles won when Oliver Pongratz won the Men's Singles? [/INST] SELECT COUNT(mixed_doubles) FROM table_12164707_1 WHERE mens_singles = "Oliver Pongratz" </s>