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.
42 lines
728 B
Plaintext
42 lines
728 B
Plaintext
== Why is this an issue?
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``++SELECT++`` with ``++JOIN++`` always performs better than nested selects.
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=== Noncompliant code example
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[source,abap]
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----
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SELECT * FROM SPFL INTO SPFLI_WA.
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SELECT * FROM SFLOGHT INTO SFLIGHT_WA
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WHERE CARRID = SPFLI_WA-CARRID
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AND CONNID = SPFLIGHT_WA_CONNID.
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ENDSELECT.
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ENDSELECT.
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----
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=== Compliant solution
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[source,abap]
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----
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SELECT * INTO WA
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FROM SPFLI AS P INNER JOIN SFLIGHT AS F
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ON P~CARRID = F~CARRID AND
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P~CONNID = F~CONNID.
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END-SELECT.
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----
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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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Remove the nested "SELECT" statements by using the "JOIN" clause
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endif::env-github,rspecator-view[]
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