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PL/Python: Fix hint about returning composite type from Python
('foo') is not a Python tuple: it is a string wrapped in parentheses. A valid 1-element Python tuple is ('foo',). Author: Daniele Varrazzo <daniele.varrazzo@gmail.com>
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@ -589,6 +589,6 @@ $$ LANGUAGE plpythonu;
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SELECT * FROM composite_type_as_list_broken();
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ERROR: malformed record literal: "first"
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DETAIL: Missing left parenthesis.
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HINT: To return a composite type in an array, return the composite type as a Python tuple, e.g. "[('foo')]"
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HINT: To return a composite type in an array, return the composite type as a Python tuple, e.g., "[('foo',)]".
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CONTEXT: while creating return value
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PL/Python function "composite_type_as_list_broken"
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@ -949,7 +949,7 @@ PLyObject_ToDatum(PLyObToDatum *arg, int32 typmod, PyObject *plrv, bool inarray)
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(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
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errmsg("malformed record literal: \"%s\"", str),
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errdetail("Missing left parenthesis."),
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errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g. \"[('foo')]\"")));
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errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g., \"[('foo',)]\".")));
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}
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return InputFunctionCall(&arg->typfunc,
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@ -1387,7 +1387,7 @@ PLyGenericObject_ToComposite(PLyTypeInfo *info, TupleDesc desc, PyObject *object
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(errcode(ERRCODE_UNDEFINED_COLUMN),
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errmsg("attribute \"%s\" does not exist in Python object", key),
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inarray ?
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errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g. \"[('foo')]\"") :
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errhint("To return a composite type in an array, return the composite type as a Python tuple, e.g., \"[('foo',)]\".") :
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errhint("To return null in a column, let the returned object have an attribute named after column with value None.")));
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}
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