Query Parser

Exploring HepPlanner for Apache Calcite

September 29, 2021September 29, 2021Apache Calcite, Big Data and Fast Data, Studio-ScalaApache Calcite, Cost Based Optimizer, HepPlanner, Query Optimization, Query Parser, rules, sql

Reading Time: 3 minutes In this blog, we will see different ways to manipulate a rel node tree using a Hep planner. A basic understanding of Apache Calcite is necessary for this. Check out the homepage here https://calcite.apache.org/ What is a HepPlanner? It is a rule-based planner to transform a relational expression represented as a tree-like structure. It allows us to specify a condition to identify particular nodes of Continue Reading

Parsing database Query with Apache Calcite

April 1, 2020April 1, 2020Database, SQL, Studio-ScalaCalcite, Query Parser

Reading Time: 3 minutes Hey there, as a technical person sometimes we have to write the query of database and that looks good but we don’t know the query we wrote was syntactically correct or not. So in this blog, we parse the database query and test it using a test case with the help of Apache Calcite. So not wasting any time lets discuss about Apache Calcite and Continue Reading