fix: support SQL-standard doubled quotes in string literals

src/sqlParser.jison

@@ -119,8 +119,8 @@ UNION                                                             return 'UNION'
 "}"                                                               return '}'
 ";"                                                               return ';'
 
-['](\\.|[^'])*[']                                                 return 'STRING'
-["](\\.|[^"])*["]                                                 return 'STRING'
+['](['][']|\\.|[^'])*[']                                          return 'STRING'
+["](["]["]|\\.|[^"])*["]                                          return 'STRING'
 [0][x][0-9a-fA-F]+                                                return 'HEX_NUMERIC'
 [-]?[0-9]+(\.[0-9]+)?                                             return 'NUMERIC'
 [-]?[0-9]+(\.[0-9]+)?[eE][-][0-9]+(\.[0-9]+)?                     return 'EXPONENT_NUMERIC'

test/main.test.js

@@ -468,4 +468,15 @@ describe('select grammar support', function () {
     SELECT one.name, group_concat(j.value, ', ') FROM one, json_each(one.stringArray) AS j GROUP BY one.id
     `)
   })
+
+  it('support SQL-standard doubled quotes inside string literals', function () {
+    const ast = testParser("select * from t where name = 'O''Hare'");
+    assert.equal(ast.value.where.right.value, "'O''Hare'");
+
+    const astDouble = testParser('select * from t where name = "say ""hi"""');
+    assert.equal(astDouble.value.where.right.value, '"say ""hi"""');
+
+    // empty string and backslash escapes should keep working
+    testParser("select * from t where a = '' and b = 'O\\'Hare'");
+  })
 });