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ProvSQL C/C++ API
Adding support for provenance and uncertainty management to PostgreSQL databases
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Walker: count SubLink nodes (capturing the first), and capture a Var referencing varno target_varno (level 0) – used to find a Q column for the count() key.
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Public Attributes | |
| int | n_sublinks |
| SubLink * | found_sublink |
| Index | target_varno |
| Var * | found_var |
Walker: count SubLink nodes (capturing the first), and capture a Var referencing varno target_varno (level 0) – used to find a Q column for the count() key.