exec/java-exec/src/test/resources/functions/test_covariance.json

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      files:["#{TEST_FILE}"]
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    "exprs" : [ {
      "ref" : "`A`",
      "expr" : "`A`"
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      "expr" : "`B`"
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    "@id" : 3,
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    "exprs" : [ {
      "ref" : "`EXPR$1`",
      "expr" : "covar_samp(`A`, `B`) "
    },
    {
      "ref" : "`EXPR$2`",
      "expr" : "covar_samp(`A`, `C`) "
    },
    {
      "ref" : "`EXPR$3`",
      "expr" : "covar_samp(`C`, `D`) "
    },
    {
      "ref" : "`EXPR$4`",
      "expr" : "covar_pop(`A`, `B`) "
    },
    {
      "ref" : "`EXPR$5`",
      "expr" : "covar_pop(`A`, `C`) "
    },
    {
      "ref" : "`EXPR$6`",
      "expr" : "covar_pop(`C`, `D`) "
    },
    {
      "ref" : "`EXPR$7`",
      "expr" : "corr(`A`, `B`) "
    },
    {
      "ref" : "`EXPR$7`",
      "expr" : "corr(`A`, `C`) "
    },
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      "ref" : "`EXPR$8`",
      "expr" : "corr(`C`, `D`) "
    } ]
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