SourabhBadhya commented on code in PR #4672:
URL: https://github.com/apache/hive/pull/4672#discussion_r1326904090
##########
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/misc/truncate/TruncateTableAnalyzer.java:
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@@ -338,4 +373,42 @@ private void addStatTask(ASTNode root, Table table, Path
oldPartitionLocation, P
moveTask.addDependentTask(statTask);
}
}
+
+ public StringBuilder constructDeleteQuery(Table table, Map<String, String>
partitionSpec) throws SemanticException {
+ StringBuilder sb = new StringBuilder().append("delete from
").append(table.getTableName())
+ .append(" where ");
+ List<String> keyList = new ArrayList<String>(partitionSpec.keySet());
+ Deserializer deserializer = table.getDeserializer();
+ Map<String, PrimitiveObjectInspector.PrimitiveCategory> stringTypeInfoMap
= new HashMap<>();
+ try {
+ ObjectInspector objectInspector = deserializer.getObjectInspector();
+ if (objectInspector.getCategory() == ObjectInspector.Category.STRUCT) {
+ StructObjectInspector structObjectInspector = (StructObjectInspector)
objectInspector;
+ List<? extends StructField> structFields =
structObjectInspector.getAllStructFieldRefs();
+ for (int index = 0;index < structFields.size();index++) {
+ StructField structField = structFields.get(index);
+ if (structField.getFieldObjectInspector().getCategory() ==
ObjectInspector.Category.PRIMITIVE) {
Review Comment:
Truncate is not supported for complex types. Hence if the column name does
not correspond to a primitive type then I have thrown an exception.
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