Fixed error with MySQL and binary data - #466

Author: ankane

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 3.0.4 (unreleased)
+
+- Fixed error with MySQL and binary data
+
 ## 3.0.3 (2024-01-10)
 
 - Fixed error with Trilogy, non-ASCII column names, and charts

lib/blazer/adapters/sql_adapter.rb

@@ -46,6 +46,20 @@ def run_statement(statement, comment, bind_params = [])
           if adapter_name == "Trilogy"
             columns.map! { |k| k.dup.force_encoding(Encoding::UTF_8) }
           end
+
+          # fix for binary data
+          if mysql?
+            rows =
+              rows.map do |row|
+                row.map do |v|
+                  if v.is_a?(String) && v.encoding == Encoding::BINARY
+                    "0x#{v.unpack1("H*").upcase}"
+                  else
+                    v
+                  end
+                end
+              end
+          end
         rescue => e
           error = e.message.sub(/.+ERROR: /, "")
           error = Blazer::TIMEOUT_MESSAGE if Blazer::TIMEOUT_ERRORS.any? { |e| error.include?(e) }