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Support mathematical functions rand and constants e, pi #591
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# Conflicts: # core/src/main/java/com/amazon/opendistroforelasticsearch/sql/expression/DSL.java # core/src/main/java/com/amazon/opendistroforelasticsearch/sql/expression/function/BuiltinFunctionName.java # core/src/main/java/com/amazon/opendistroforelasticsearch/sql/expression/operator/arthmetic/MathematicalFunction.java # core/src/test/java/com/amazon/opendistroforelasticsearch/sql/expression/operator/arthmetic/MathematicalFunctionTest.java # integ-test/src/test/java/com/amazon/opendistroforelasticsearch/sql/ppl/MathematicalFunctionIT.java # integ-test/src/test/resources/correctness/expressions/functions.txt # ppl/src/main/antlr/OpenDistroPPLLexer.g4 # ppl/src/main/antlr/OpenDistroPPLParser.g4 # sql/src/main/antlr/OpenDistroSQLParser.g4
dai-chen
reviewed
Jul 20, 2020
dai-chen
reviewed
Jul 21, 2020
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Issue #, if available:
Description of changes:
RANDUsage:
rand()/rand(N)returns a random floating-point value in the range 0 <= value < 1.0. If integer N is specified, the seed is initialized prior to execution. One implication of this behavior is with identical argument N,rand(N)returns the same value each time, and thus produces a repeatable sequence of column values.Argument type: x: STRING, a: INTEGER, b: INTEGER
Return type: STRING
EUsage:
e()returns the Euler's numberReturn type: DOUBLE
PIUsage:
pi()returns the constant piReturn type: DOUBLE
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