kasakrisz commented on code in PR #4837:
URL: https://github.com/apache/hive/pull/4837#discussion_r1384617494
##########
ql/src/java/org/apache/hadoop/hive/ql/exec/DDLPlanUtils.java:
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@@ -691,20 +691,26 @@ public void
getAlterTableStmtForeignKeyConstraint(ForeignKeyInfo fr, List<String
}
Map<String, List<ForeignKeyInfo.ForeignKeyCol>> all = fr.getForeignKeys();
for (String key : all.keySet()) {
- for (ForeignKeyInfo.ForeignKeyCol fkc : all.get(key)) {
- ST command = new ST(ALTER_TABLE_ADD_FOREIGN_KEY);
- command.add(CHILD_TABLE_NAME, fr.getChildTableName());
- command.add(DATABASE_NAME, fr.getChildDatabaseName());
- command.add(CONSTRAINT_NAME, key);
- command.add(CHILD_COL_NAME, fkc.childColName);
- command.add(DATABASE_NAME_FR, fkc.parentDatabaseName);
- command.add(PARENT_TABLE_NAME, fkc.parentTableName);
- command.add(PARENT_COL_NAME, fkc.parentColName);
- command.add(ENABLE, fkc.enable);
- command.add(VALIDATE, fkc.validate);
- command.add(RELY, fkc.rely);
- constraints.add(command.render());
+ List<ForeignKeyInfo.ForeignKeyCol> fkCols = all.get(key);
+ List<String> parentCols = new ArrayList<>();
+ List<String> childCols = new ArrayList<>();
Review Comment:
How about using `LinkedHashSet<String>(fkCols.size())` since column names
should be unique.
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