Definitions for Values Insertion #177
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TallTed
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Jan 8, 2025
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| <p>The following sections contain draft of material for a revised | ||
| "`exists`" operation. | ||
| </p> |
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| <p>The following sections contain draft of material for a revised | |
| "`exists`" operation. | |
| </p> | |
| <p>This section contains draft material for a revised | |
| "`exists`" operation. | |
| </p> |
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This is a DRAFT pull request.
These are process notes. They will be removed.
| This applies to `BIND`, variables introduced by `AS` in a `SELECT` clause, variables in a `VALUES` | ||
| clause, and variables intrucded by `AS` in `GROUP BY`. | ||
| </blockquote> | ||
| <p>Extend the "in-scope" rules to include the variables in-scope from the current row:</p> |
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| <p>Extend the "in-scope" rules to include the variables in-scope from the current row:</p> | |
| <p>Extend the "in-scope" rules to include the variables that are in-scope for the current row:</p> |
spec/index.html
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| </table> | ||
| <p class="note"> | ||
| This restriction means that <a href="#defn_valuesinsertion">values inserted</a> | ||
| do not conflict with values assigned to varibales with the pattern. |
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| do not conflict with values assigned to varibales with the pattern. | |
| do not conflict with values assigned to variables with the pattern. |
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| <p class="note"> | ||
| A variable inside a project expression that is not in the variables projected | ||
| is not affected by the values insertion operation because it is renamed apart. |
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| is not affected by the values insertion operation because it is renamed apart. | |
| is not affected by the value insertion operation because it is renamed apart. |
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| <!-- ValuesInsertion --> | ||
| <section> | ||
| <h3>Values Insertion and `EXISTS`</h3> |
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Values Insertion reads very oddly to me. Can this be changed (throughout) to Value Insertion?
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| <!-- ValuesInsertion --> | |
| <section> | |
| <h3>Values Insertion and `EXISTS`</h3> | |
| <!-- ValueInsertion --> | |
| <section> | |
| <h3>Value Insertion and `EXISTS`</h3> |
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It is inserting multiple values.
| <div> | ||
| <b>Definition: <span id="defn_valuesinsertion" name="defn_valuesinsertion">Values Insertion</span></b> | ||
| <p> | ||
| Define the Values Insertion function `ValuesInsert(X, μ)` |
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If, as I suggested above, Values Insertion is being changed to Value Insertion, then ValuesInsert should likewise be changed to ValueInsert
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| Define the Values Insertion function `ValuesInsert(X, μ)` | |
| Define the Value Insertion function `ValueInsert(X, μ)` |
| <pre>exists(X) = true | ||
| if eval( D(G), ValuesInsert(PrjMap(X), μ) ) | ||
| is a non-empty solution sequence. | ||
| exists(X) = false otherwise</pre> |
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| exists(X) = false otherwise</pre> | |
| Otherwise, exists(X) = false.</pre> |
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The style here is that for function definition, with each case being aligned. It is not running text.
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A replacement for
substitute.The context is taken from SEP-0007.
Currently, all new material is in a single section.
Submitting this PR puts the content under the WG agreement for IP and Licensing.
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