module ActiveRecord::ConnectionAdapters::SQLServer::CoreExt::Explain
Constants
- SQLSERVER_PARAM_MATCHER
- SQLSERVER_STATEMENT_PREFIX
Public Instance Methods
exec_explain(queries)
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Calls superclass method
# File lib/active_record/connection_adapters/sqlserver/core_ext/explain.rb, line 10 def exec_explain(queries) unprepared_queries = queries.map { |sql, bind| [unprepare_sqlserver_statement(sql), bind] } super(unprepared_queries) end
Private Instance Methods
unprepare_sqlserver_statement(sql)
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This is somewhat hacky, but it should reliably reformat our prepared sql statment which uses sp_executesql to just the first argument, then unquote it. Likewise our ‘sp_executesql` method should substitude the @n args withe the quoted values.
# File lib/active_record/connection_adapters/sqlserver/core_ext/explain.rb, line 20 def unprepare_sqlserver_statement(sql) if sql.starts_with?(SQLSERVER_STATEMENT_PREFIX) executesql = sql.from(SQLSERVER_STATEMENT_PREFIX.length) executesql_args = executesql.split(', ') found_args = executesql_args.reject! { |arg| arg =~ SQLSERVER_PARAM_MATCHER } executesql_args.pop if found_args && executesql_args.many? executesql = executesql_args.join(', ').strip.match(/N'(.*)'/m)[1] Utils.unquote_string(executesql) else sql end end