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• jsonb_extract_path   ---- this expression specifies the PATH necessary to get the last field entered in the path; the data type for this result is "JSONB" a json object and will show the result be enclosed in double-quotes
• jsonb_extract_path_text   ---- this expression does the same thing as jsonb_extract_path, but returns a TEXT object (the result shows no quotes)
• jsonb_array_elements   ---- this expression is used for extracting values within an array object
• table name or alias.jsonb #>> '{path of fields in the hierarchy separated by commas}' 
  • Example: audit_loan.jsonb #>> '{loan, metadata, updatedByUserId}'  — this will get the value for "updatedByUserId"

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