--- sql/pgsql/parser3pgsql.C	2012/06/06 14:47:44	1.39
+++ sql/pgsql/parser3pgsql.C	2015/10/26 16:00:51	1.44
@@ -1,7 +1,7 @@
 /** @file
 	Parser PgSQL driver.
 
-	Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
+	Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com)
 
 	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 
@@ -15,7 +15,7 @@
 #include <libpq-fe.h>
 #include <libpq/libpq-fs.h>
 
-volatile const char * IDENT_PARSER3PGSQL_C="$Id: parser3pgsql.C,v 1.39 2012/06/06 14:47:44 moko Exp $" IDENT_PA_SQL_DRIVER_H;
+volatile const char * IDENT_PARSER3PGSQL_C="$Id: parser3pgsql.C,v 1.44 2015/10/26 16:00:51 moko Exp $" IDENT_PA_SQL_DRIVER_H;
 
 // from catalog/pg_type.h
 #define BOOLOID			16
@@ -100,6 +100,7 @@ struct Connection {
 	const char* client_charset;
 	bool autocommit;
 	bool without_default_transactions;
+	bool standard_conforming_strings;
 };
 
 /**
@@ -134,7 +135,8 @@ public:
 			charset=value&			// transcode by server with 'SET CLIENT_ENCODING=value'
 			datestyle=value&		// 'SET DATESTYLE=value' available values are: ISO|SQL|Postgres|European|US|German [default=ISO]
 			autocommit=1&			// each transaction is commited automatically (default)
-			WithoutDefaultTransaction=0	// 1 -- disable any BEGIN TRAN/COMMIT/ROLLBACK [can NOT be used with autocommit option]
+			standard_conforming_strings=1& // 0 -- escape \ char that could be needed for old servers
+			WithoutDefaultTransaction=0	   // 1 -- disable any BEGIN TRAN/COMMIT/ROLLBACK [can NOT be used with autocommit option]
 	*/
 	void connect(
 				char* url, 
@@ -158,6 +160,7 @@ public:
 		connection.client_charset=0;	
 		connection.autocommit=true;
 		connection.without_default_transactions=false;
+		connection.standard_conforming_strings=true;
 
 		connection.conn=PQsetdbLogin(
 			(host&&strcasecmp(host, "local")==0)?NULL/* local Unix domain socket */:host, port, 
@@ -192,6 +195,9 @@ public:
 								connection.without_default_transactions=true;
 								connection.autocommit=false;
 							}
+						} else if(strcasecmp(key, "standard_conforming_strings")==0){
+							if(atoi(value)==0)
+								connection.standard_conforming_strings=false;
 						} else
 							services._throw("unknown connect option" /*key*/);
 					} else 
@@ -208,7 +214,7 @@ public:
 		}
 
 		if(datestyle){
-			char statement[MAX_STRING]="SET DATESTYLE=";
+			char statement[MAX_STRING+1]="SET DATESTYLE=";
 			strncat(statement, datestyle, MAX_STRING);
 
 			_execute_cmd(connection, statement);
@@ -244,36 +250,52 @@ public:
 	// thus we can't use the sql server quoting support
 	const char* quote(void *aconnection, const char *str, unsigned int length) 
 	{
+		Connection& connection=*static_cast<Connection*>(aconnection);
+
 		const char* from;
 		const char* from_end=str+length;
 
 		size_t quoted=0;
 
-		for(from=str; from<from_end; from++){
-			switch (*from) {
-			case '\'':
-			case '\\':
-				quoted++;
+		if(connection.standard_conforming_strings){
+			for(from=str; from<from_end; from++){
+				if(*from=='\'')
+					quoted++;
+			}
+		} else {
+			for(from=str; from<from_end; from++){
+				switch (*from) {
+				case '\'':
+				case '\\':
+					quoted++;
+				}
 			}
 		}
 
 		if(!quoted)
 			return str;
 
-		Connection& connection=*static_cast<Connection*>(aconnection);
 		char *result=(char*)connection.services->malloc_atomic(length + quoted + 1);
 		char *to = result;
 
-		for(from=str; from<from_end; from++){
-			switch (*from) {
-			case '\'': // "'" -> "''"
-				*to++='\'';
-				break;
-			case '\\': // "\" -> "\\"
-				*to++='\\';
-				break;
+		if(connection.standard_conforming_strings){
+			for(from=str; from<from_end; from++){
+				if(*from=='\'')
+					*to++= '\''; // "'" -> "''"
+				*to++=*from;
+			}
+		} else {
+			for(from=str; from<from_end; from++){
+				switch (*from) {
+				case '\'': // "'" -> "''"
+					*to++= '\'';
+					break;
+				case '\\': // "\" -> "\\"
+					*to++='\\';
+					break;
+				}
+				*to++=*from;
 			}
-			*to++=*from;
 		}
 		
 		*to=0;
@@ -689,11 +711,19 @@ private: // conn client library funcs
 private: // conn client library funcs linking
 
 	const char *dlink(const char *dlopen_file_spec) {
-		if(lt_dlinit())
-			return lt_dlerror();
+		if(lt_dlinit()){
+			if(const char* result=lt_dlerror())
+				return result;
+			return "can not prepare to dynamic loading";
+		}
+
 		lt_dlhandle handle=lt_dlopen(dlopen_file_spec);
-		if(!handle)
+
+		if(!handle){
+			if(const char* result=lt_dlerror())
+				return result;
 			return "can not open the dynamic link module";
+		}
 
 		#define DSLINK(name, action) \
 			name=(t_##name)lt_dlsym(handle, #name); \