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Overview
Comment:Update the documentation to be explicit that a parent key must not be a rowid.
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: d1edb27943bf34cb2bb8598ddf0668236603c2ed
User & Date: drh 2010-11-18 16:21:18
Context
2010-11-18
20:42
Fix a typo in the PRAGMA auto_vacuum documentation. check-in: 8c4c6ab123 user: drh tags: trunk
16:21
Update the documentation to be explicit that a parent key must not be a rowid. check-in: d1edb27943 user: drh tags: trunk
01:11
Another minor change to the EQP documentation. check-in: 1aff231013 user: drh tags: trunk
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Changes to pages/foreignkeys.in.

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        is applied to and the table that contains the REFERENCES clause.
        The example in this section uses the <i>track</i> table
        as the child table. Other books and articles refer to this as the
        <i>referencing table</i>.

    <li><p>The <b>parent key</b> is the column or set of columns in the parent 
        table that the foreign key constraint refers to. This is normally, but
        not always, the primary key of the parent table.


    <li><p>The <b>child key</b> is the column or set of columns in the child 
        table that are constrained by the foreign key constraint and which
        hold the REFERENCES clause.
  </ul>

  <p>







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        is applied to and the table that contains the REFERENCES clause.
        The example in this section uses the <i>track</i> table
        as the child table. Other books and articles refer to this as the
        <i>referencing table</i>.

    <li><p>The <b>parent key</b> is the column or set of columns in the parent 
        table that the foreign key constraint refers to. This is normally, but
        not always, the primary key of the parent table.  ^The parent key must
        be a named column or columns in the parent table, not the [rowid].

    <li><p>The <b>child key</b> is the column or set of columns in the child 
        table that are constrained by the foreign key constraint and which
        hold the REFERENCES clause.
  </ul>

  <p>

Changes to pages/lang.in.

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integer primary key or rowid column, a "datatype mismatch" error occurs and the
statement is aborted.

<p>^If an INSERT statement attempts to insert a NULL value into a rowid or
integer primary key column, the system chooses an integer value to use as the
rowid automatically. A detailed description of how this is done is provided
<a href="autoinc.html">separately</a>.</p>




<tcl>
##############################################################################
Section {CREATE TRIGGER} createtrigger {{CREATE TRIGGER}}

BubbleDiagram create-trigger-stmt 1
</tcl>







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integer primary key or rowid column, a "datatype mismatch" error occurs and the
statement is aborted.

<p>^If an INSERT statement attempts to insert a NULL value into a rowid or
integer primary key column, the system chooses an integer value to use as the
rowid automatically. A detailed description of how this is done is provided
<a href="autoinc.html">separately</a>.</p>

<p>^(The [parent key] of a [foreign key constraint] is not allowed to
use the rowid.  The parent key must used named columns only.)^</p>

<tcl>
##############################################################################
Section {CREATE TRIGGER} createtrigger {{CREATE TRIGGER}}

BubbleDiagram create-trigger-stmt 1
</tcl>