#13025 Eliminate Oracle-specific joins

plugins/org.jkiss.dbeaver.ext.oracle/src/org/jkiss/dbeaver/ext/oracle/model/OracleSchema.java

@@ -1084,11 +1084,11 @@ public class OracleSchema extends OracleGlobalObject implements DBSSchema, DBPRe
                     "i.OWNER,i.INDEX_NAME,i.INDEX_TYPE,i.TABLE_OWNER,i.TABLE_NAME,i.UNIQUENESS,i.TABLESPACE_NAME,i.STATUS,i.NUM_ROWS,i.SAMPLE_SIZE,\n" +
                     "ic.COLUMN_NAME,ic.COLUMN_POSITION,ic.COLUMN_LENGTH,ic.DESCEND,iex.COLUMN_EXPRESSION\n" +
                     "FROM " + OracleUtils.getAdminAllViewPrefix(session.getProgressMonitor(), getDataSource(), "INDEXES") + " i\n" +
-                    ", " + OracleUtils.getAdminAllViewPrefix(session.getProgressMonitor(), getDataSource(), "IND_COLUMNS") + " ic, " +
-                    OracleUtils.getAdminAllViewPrefix(session.getProgressMonitor(), getDataSource(), "IND_EXPRESSIONS") + " iex " +
-                    "WHERE ic.INDEX_OWNER=i.OWNER AND ic.INDEX_NAME=i.INDEX_NAME \n" +
-                    "AND iex.INDEX_OWNER(+)=i.OWNER AND iex.INDEX_NAME(+)=i.INDEX_NAME AND iex.COLUMN_POSITION(+)=ic.COLUMN_POSITION\n" +
-                    "AND ");
+                    "JOIN " + OracleUtils.getAdminAllViewPrefix(session.getProgressMonitor(), getDataSource(), "IND_COLUMNS") + " ic " +
+                    "ON i.owner = ic.index_owner AND i.index_name = ic.index_name\n" +
+                    "LEFT JOIN " + OracleUtils.getAdminAllViewPrefix(session.getProgressMonitor(), getDataSource(), "IND_EXPRESSIONS") + " iex " +
+                    "ON iex.index_owner = i.owner AND iex.INDEX_NAME = i.INDEX_NAME AND iex.COLUMN_POSITION = ic.COLUMN_POSITION\n" +
+                    "WHERE ");
             if (forTable == null) {
                 sql.append("i.OWNER=?");
             } else {