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v4.0
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    中文EN
    v4.0

      Operator | Precedence

      Operator

      • Conditional operators
      Operator Description
      @ schema checker
      == equal
      != not equal
      < less than
      > greater than
      <= less than or equal
      >= greater than or equal
      <> between
      <=> between or equal
      in belong to
      nin not belong to
      contains contain / full-text search
      =~ regular expression  V4.1 

      The operands for conditional judgement must be consistent with the definitions of conditional operators to determine true or false:

      • Logic operators
      Operator Description
      && and
      || or
      ! not
      xor exclusive OR  V4.1 

      Both operands and results of logical operation are either true or false.

      • Numeric operators
      Operator Description
      + addition
      - subtraction
      * multiplication
      / division
      % modulo (the remainder of division)

      Precedence

      The following table shows the precedence of conditional operators, logic operators and numeric operators (1 represents the highest):

      Precedence Operator Category
      1 ( ), [ ]
      2 @ conditional operator
      3 ! logic operator
      4 *, /, % numeric operator
      5 +, - numeric operator
      6 >, <, >= , <= , <> , <=>, in, nin, contains conditional operator
      7 == , != conditional operator
      8 && logic operator
      9 xor, || logic operator
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