1. JSON Developer's Guide
  2. Diagrams for Basic SQL/JSON Path Expression Syntax

B Diagrams for Basic SQL/JSON Path Expression Syntax

Syntax diagrams and corresponding Backus-Naur Form (BNF) syntax descriptions are presented for the basic SQL/JSON path expression syntax.

The basic syntax of SQL/JSON path expression is explained in Basic SQL/JSON Path Expression Syntax. This topic recapitulates that information in the form of syntax diagrams and BNF descriptions.

Figure B-1 json_basic_path_expression

Description of Figure B-1 follows
Description of "Figure B-1 json_basic_path_expression"

Figure B-2 json_absolute_path_expression

Description of Figure B-2 follows
Description of "Figure B-2 json_absolute_path_expression"

Figure B-3 json_nonfunction_steps

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Description of "Figure B-3 json_nonfunction_steps"

Figure B-4 json_object_step

Description of Figure B-4 follows
Description of "Figure B-4 json_object_step"

Figure B-5 json_field_name

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Description of "Figure B-5 json_field_name"

Figure B-6 json_array_step

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Description of "Figure B-6 json_array_step"

Note:

  • Array indexing is zero-based, so integer is a non-negative integer (0, 1, 2, 3,...).

  • The first integer of a range (integer to integer) must be less than the second.

  • The array elements must be specified by indexes in ascending order, without repetitions.

A compile-time error is raised if any of these syntax rules is violated.

Figure B-7 json_function_step

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Description of "Figure B-7 json_function_step"

Figure B-8 json_item_method

Description of Figure B-8 follows
Description of "Figure B-8 json_item_method"

Figure B-9 json_filter_expr

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Description of "Figure B-9 json_filter_expr"

Figure B-10 json_cond

Description of Figure B-10 follows
Description of "Figure B-10 json_cond"

Figure B-11 json_conjunction

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Description of "Figure B-11 json_conjunction"

Figure B-12 json_comparison

Description of Figure B-12 follows
Description of "Figure B-12 json_comparison"

Figure B-13 json_relative_path-expr

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Description of "Figure B-13 json_relative_path-expr"

Figure B-14 json_compare_pred

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Description of "Figure B-14 json_compare_pred"

Figure B-15 json_var

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Description of "Figure B-15 json_var"

Figure B-16 json_scalar

Description of Figure B-16 follows
Description of "Figure B-16 json_scalar"

Note:

json_number is a JSON number: a decimal numeral, possibly signed and possibly including a decimal exponent.

See Also:

Oracle Database SQL Language Reference for information about Oracle syntax diagrams