adonis0147 commented on code in PR #16006:
URL: https://github.com/apache/doris/pull/16006#discussion_r1071921323


##########
fe/fe-core/src/main/java/org/apache/doris/alter/Alter.java:
##########
@@ -137,29 +137,17 @@ public void 
processDropMaterializedView(DropMaterializedViewStmt stmt) throws Dd
         if (!stmt.isForMTMV() && stmt.getTableName() == null) {
             throw new DdlException("Drop materialized view without table name 
is unsupported : " + stmt.toSql());
         }
-        TableName tableName = !stmt.isForMTMV() ? stmt.getTableName() : 
stmt.getMTMVName();
-        Database db;
-        OlapTable olapTable;
-        if (stmt.isIfExists()) {
-            try {
-                String dbName = tableName.getDb();
-                db = 
Env.getCurrentInternalCatalog().getDbOrDdlException(dbName);
-                String name = tableName.getTbl();
-                olapTable = (OlapTable) db.getTableOrMetaException(name,
-                        !stmt.isForMTMV() ? TableType.OLAP : 
TableType.MATERIALIZED_VIEW);
-            } catch (Exception e) {
-                LOG.info("db or table not exists, msg={}", e.getMessage());

Review Comment:
   > DROP MATERIALIZED VIEW if exists mv;
   > 
   > if mv not exist can above sql return ok ?
   
   Yes.



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