fix: get correct table name if table name is quoted (#1234)

* fix: get correct table name if table name is quoted

* Remove double test

* Add new line to sql_table_name.json

* Stop accepting table name in single quotes

---------

Co-authored-by: Kayla Reopelle <[email protected]>
Co-authored-by: Ariel Valentin <[email protected]>

Author: 3 people

instrumentation/pg/lib/opentelemetry/instrumentation/pg/patches/connection.rb

@@ -15,7 +15,7 @@ module Patches
         # Module to prepend to PG::Connection for instrumentation
         module Connection # rubocop:disable Metrics/ModuleLength
           # Capture the first word (including letters, digits, underscores, & '.', ) that follows common table commands
-          TABLE_NAME = /\b(?:FROM|INTO|UPDATE|CREATE\s+TABLE(?:\s+IF\s+NOT\s+EXISTS)?|DROP\s+TABLE(?:\s+IF\s+EXISTS)?|ALTER\s+TABLE(?:\s+IF\s+EXISTS)?)\s+([\w\.]+)/i
+          TABLE_NAME = /\b(?:FROM|INTO|UPDATE|CREATE\s+TABLE(?:\s+IF\s+NOT\s+EXISTS)?|DROP\s+TABLE(?:\s+IF\s+EXISTS)?|ALTER\s+TABLE(?:\s+IF\s+EXISTS)?)\s+["]?([\w\.]+)["]?/i
 
           PG::Constants::EXEC_ISH_METHODS.each do |method|
             define_method method do |*args, &block|

instrumentation/pg/test/fixtures/sql_table_name.json

@@ -50,5 +50,9 @@
     {
       "name": "from_with_join",
       "sql": "SELECT columns FROM test_table JOIN table2 ON test_table.column = table2.column"
+    },
+    {
+      "name": "table_name_with_double_quotes",
+      "sql": "SELECT columns FROM \"test_table\""
     }
-  ]
+]