imay commented on a change in pull request #2573: implements create drop show
index syntax for bitmap index [#2487]
URL: https://github.com/apache/incubator-doris/pull/2573#discussion_r362504816
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File path: fe/src/main/java/org/apache/doris/alter/Alter.java
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@@ -169,9 +175,49 @@ public void processAlterTable(AlterTableStmt stmt) throws
UserException {
|| alterClause instanceof AddColumnsClause
|| alterClause instanceof DropColumnClause
|| alterClause instanceof ModifyColumnClause
- || alterClause instanceof ReorderColumnsClause)
+ || alterClause instanceof ReorderColumnsClause
+ || alterClause instanceof CreateIndexClause
+ || alterClause instanceof DropIndexClause)
&& !hasAddMaterializedView && !hasDropRollup &&
!hasPartition && !hasRename) {
hasSchemaChange = true;
+ if (alterClause instanceof CreateIndexClause) {
+ Table table = db.getTable(dbTableName.getTbl());
+ if (!(table instanceof OlapTable)) {
+ throw new AnalysisException("create index only support
in olap table at current version.");
+ }
+ List<Index> indexes = ((OlapTable) table).getIndexes();
+ IndexDef indexDef = ((CreateIndexClause)
alterClause).getIndexDef();
+ Set<String> newColset = new
TreeSet<>(String.CASE_INSENSITIVE_ORDER);
+ newColset.addAll(indexDef.getColumns());
+ for (Index idx : indexes) {
+ if
(idx.getIndexName().equalsIgnoreCase(indexDef.getIndexName())) {
+ throw new AnalysisException("index `" +
indexDef.getIndexName() + "` already exist.");
+ }
+ Set<String> idxSet = new
TreeSet<>(String.CASE_INSENSITIVE_ORDER);
+ idxSet.addAll(idx.getColumns());
+ if (newColset.equals(idxSet)) {
+ throw new AnalysisException("index for columns
(" + String
+ .join(",", indexDef.getColumns()) + "
) already exist.");
+ }
+ }
+
+ } else if (alterClause instanceof DropIndexClause) {
+ Table table = db.getTable(dbTableName.getTbl());
+ if (table instanceof OlapTable) {
Review comment:
If table is not OlapTable, throw exception?
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