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  1. Ignite
  2. IGNITE-15128

Take own control of SQL functions

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • None
    • sql
    • Docs Required, Release Notes Required

    Description

      As of now, we use a set of 4 database function dialects:

      SqlLibrary.STANDARD,
      SqlLibrary.POSTGRESQL,
      SqlLibrary.ORACLE,
      SqlLibrary.MYSQL

      Seems we should have owned our dialect with a subset of the aforementioned functions and have the ability to modify already exists functions and add a new one.

      During implementation need to sort out similar functions and choose just one of them to avoid duplication, 

      See :
      org.apache.calcite.util.BuiltInMethod

      org.apache.calcite.sql.fun.SqlLibraryOperators
      org.apache.calcite.runtime.SqlFunctions

      org.apache.ignite.internal.processors.query.calcite.exec.exp.RexImpTable

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              alex_pl Aleksey Plekhanov
              jooger Yury Gerzhedovich
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