Fix MDEV-12973: Blank columns querying SQL Server

Added support of NCHAR, NVARCHAR an ROWID JDBC types.
  modified:   storage/connect/jdbconn.cpp

storage/connect/jdbconn.cpp

@@ -121,13 +121,17 @@ int TranslateJDBCType(int stp, char *tn, int prec, int& len, char& v)
 
 	switch (stp) {
 	case -1:   // LONGVARCHAR
+	case -16:  // LONGNVARCHAR	(unicode)
 		if (GetTypeConv() != TPC_YES)
 			return TYPE_ERROR;
 		else
 		  len = MY_MIN(abs(len), GetConvSize());
 	case 12:   // VARCHAR
+	case -9:   // NVARCHAR	(unicode)
 		v = 'V';
 	case 1:    // CHAR
+	case -15:  // NCHAR	 (unicode)
+	case -8:   // ROWID
 		type = TYPE_STRING;
 		break;
 	case 2:    // NUMERIC
@@ -143,6 +147,7 @@ int TranslateJDBCType(int stp, char *tn, int prec, int& len, char& v)
 		break;
 	case -6:   // TINYINT
 	case -7:   // BIT
+	case 16:   // BOOLEAN
 		type = TYPE_TINY;
 		break;
 	case 6:    // FLOAT
@@ -178,6 +183,16 @@ int TranslateJDBCType(int stp, char *tn, int prec, int& len, char& v)
 	case 0:    // NULL
 	case -2:   // BINARY
 	case -4:   // LONGVARBINARY
+	case 70:   // DATALINK
+	case 2000: // JAVA_OBJECT
+	case 2001: // DISTINCT
+	case 2002: // STRUCT
+	case 2003: // ARRAY
+	case 2004: // BLOB
+	case 2005: // CLOB
+	case 2006: // REF
+	case 2009: // SQLXML
+	case 2011: // NCLOB
 	default:
 		type = TYPE_ERROR;
 		len = 0;
@@ -1225,9 +1240,12 @@ void JDBConn::SetColumnValue(int rank, PSZ name, PVAL val)
 
 	switch (ctyp) {
 	case 12:          // VARCHAR
+	case -9:          // NVARCHAR
 	case -1:          // LONGVARCHAR
 	case 1:           // CHAR
+	case -15:         // NCHAR
 	case 3:           // DECIMAL
+	case -8:          // ROWID
 		if (jb && ctyp != 3)
 			cn = (jstring)jb;
 		else if (!gmID(g, chrfldid, "StringField", "(ILjava/lang/String;)Ljava/lang/String;"))
@@ -1245,6 +1263,7 @@ void JDBConn::SetColumnValue(int rank, PSZ name, PVAL val)
 	case 4:           // INTEGER
 	case 5:           // SMALLINT
 	case -6:          // TINYINT
+	case 16:          // BOOLEAN
 	case -7:          // BIT
 		if (!gmID(g, intfldid, "IntField", "(ILjava/lang/String;)I"))
 			val->SetValue((int)env->CallIntMethod(job, intfldid, rank, jn));