PostgreSQL 9.2.12 Documentation
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# 9.15. JSON Functions

Table 9-40 shows the functions that are available for creating JSON (see Section 8.14) data.

Table 9-40. JSON Support Functions

Function | Description | Example | Example Result
--- | --- | --- | ---
`array_to_json(anyarray [, pretty_bool])` | Returns the array as JSON. A PostgreSQL multidimensional array becomes a JSON array of arrays. Line feeds will be added between dimension 1 elements if `pretty_bool` is true. | `array_to_json('{{1,5},{99,100}}'::int[])` | `[[1,5],[99,100]]`
`row_to_json(record [, pretty_bool])` | Returns the row as JSON. Line feeds will be added between level 1 elements if `pretty_bool` is true. | `row_to_json(row(1,'foo'))` | `{"f1":1,"f2":"foo"}`

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