#12128 Quote special floating-point values

plugins/org.jkiss.dbeaver.ext.postgresql/src/org/jkiss/dbeaver/ext/postgresql/model/PostgreDialect.java

@@ -816,6 +816,12 @@ public class PostgreDialect extends JDBCSQLDialect implements TPRuleProvider {
             // For now we use workaround: represent objects as strings
             return '\'' + escapeString(strValue) + '\'';
         }
+        if ((value instanceof Float && (((Float) value).isNaN() || ((Float) value).isInfinite()))
+            || (value instanceof Double && (((Double) value).isNaN() || ((Double) value).isInfinite()))) {
+            // PostgreSQL doesn't like special values such as NaN and +-Infinity without quotes
+            // https://www.postgresql.org/docs/current/datatype-numeric.html#DATATYPE-NUMERIC-DECIMAL
+            return '\'' + String.valueOf(value) + '\'';
+        }
         return super.escapeScriptValue(attribute, value, strValue);
     }
 

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

@@ -636,9 +636,6 @@ public final class SQLUtils {
         } else {
             strValue = valueHandler.getValueDisplayString(attribute, value, displayFormat);
         }
-        if (value instanceof Number) {
-            return strValue;
-        }
         SQLDialect sqlDialect = dataSource.getSQLDialect();
 
         DBPDataKind dataKind = attribute.getDataKind();