16f6c0aecf
Inline adoc files when they are included exactly once. Also fix language tags because this inlining gives us better information on what language the code is written in.
50 lines
1.3 KiB
Plaintext
50 lines
1.3 KiB
Plaintext
== Why is this an issue?
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Using ``++FORALL i IN x.first ... x++``.last or ``++FORALL i IN 1 ... x.count++`` might fail when indexed collections are sparse as Oracle tries to access non-existent element(s) of x. ``++FORALL i IN INDICES OF x++`` syntax will always work including sparse collections. Thus using ``++FORALL i IN INDICES OF x++`` should be preferred as it makes code more robust and easier to review.
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=== Noncompliant code example
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[source,sql]
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----
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FORALL i IN 1 .. l_tab.COUNT -- Non-Compliant
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INSERT INTO forall_test VALUES l_tab(i);
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FORALL i IN l_tab.first .. l_tab.last -- Non-Compliant
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INSERT INTO forall_test VALUES l_tab(i);
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----
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=== Compliant solution
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[source,sql]
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----
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FORALL i IN INDICES OF l_tab
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INSERT INTO forall_test VALUES l_tab(i);
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----
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== Resources
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* https://blogs.oracle.com/oraclemagazine/oracle-10g-adds-more-to-forall[Oracle 10g Adds More to FORALL]
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* https://stevenfeuersteinonplsql.blogspot.com/2019/03/using-sparse-collections-with-forall.html[Using sparse collections with FORALL] - Steven Feuerstein
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ifdef::env-github,rspecator-view[]
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'''
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== Implementation Specification
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(visible only on this page)
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=== Message
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Replace "IN ..." with "INDICES OF ..."
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=== Highlighting
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* ``++IN x.first ... x.last++``
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* ``++1 ... x.count++``
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endif::env-github,rspecator-view[]
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