Statement delimiter check fix

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/model/sql/SQLUtils.java

@@ -244,7 +244,14 @@ public final class SQLUtils {
     {
         sql = sql.trim();
         String statementDelimiter = syntaxManager.getStatementDelimiter();
-        if (sql.endsWith(statementDelimiter)) {
+        if (sql.endsWith(statementDelimiter) && sql.length() > statementDelimiter.length()) {
+            if (Character.isAlphabetic(statementDelimiter.charAt(0))) {
+                // Delimiter is alphabetic (e.g. "GO") so it must be prefixed with whitespace
+                char lastChar = sql.charAt(sql.length() - statementDelimiter.length() - 1);
+                if (Character.isUnicodeIdentifierPart(lastChar)) {
+                    return sql;
+                }
+            }
             // Remove trailing delimiter only if it is not block end
             String trimmed = sql.substring(0, sql.length() - statementDelimiter.length());
             String test = trimmed.toUpperCase().trim();