danny0405 commented on a change in pull request #8626: [FLINK-12742] Add insert
into partition grammar as hive dialect
URL: https://github.com/apache/flink/pull/8626#discussion_r292342630
##########
File path:
flink-table/flink-sql-parser/src/main/codegen/includes/parserImpls.ftl
##########
@@ -236,6 +236,89 @@ SqlDrop SqlDropTable(Span s, boolean replace) :
}
}
+/**
+* Parses an INSERT statement.
+*/
+SqlNode RichSqlInsert() :
+{
+ final List<SqlLiteral> keywords = new ArrayList<SqlLiteral>();
+ final SqlNodeList keywordList;
+ SqlNode table;
+ SqlNodeList extendList = null;
+ SqlNode source;
+ final SqlNodeList partitionList = new SqlNodeList(getPos());
+ SqlNodeList columnList = null;
+ final Span s;
+}
+{
+ (
+ <INSERT>
+ |
+ <UPSERT> { keywords.add(SqlInsertKeyword.UPSERT.symbol(getPos())); }
+ )
+ { s = span(); }
+ SqlInsertKeywords(keywords) {
+ keywordList = new SqlNodeList(keywords, s.addAll(keywords).pos());
+ }
+ <INTO> table = CompoundIdentifier()
+ [
+ LOOKAHEAD(5)
+ [ <EXTEND> ]
+ extendList = ExtendList() {
+ table = extend(table, extendList);
+ }
+ ]
+ [
+ LOOKAHEAD(2)
+ { final Pair<SqlNodeList, SqlNodeList> p; }
+ p = ParenthesizedCompoundIdentifierList() {
+ if (p.right.size() > 0) {
+ table = extend(table, p.right);
+ }
+ if (p.left.size() > 0) {
+ columnList = p.left;
+ }
+ }
+ ]
+ [
+ <PARTITION> PartitionSpecCommaList(partitionList) {
+ if (this.conformance != FlinkSqlConformance.HIVE) {
Review comment:
We can have a method like this, what is the best impl i want, but merging to
Apache Calcite needs time.
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