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Overview
Comment:Updates so that documentation agrees with requirement marks.
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: f1a1831162fdf5f6c8c85d744ad8389574040c2a6a639b2c47b401163a33e316
User & Date: drh 2019-09-27 17:55:32
Context
2019-09-28
19:02
Typo fixes. check-in: 7a37431be5 user: drh tags: trunk
2019-09-27
17:55
Updates so that documentation agrees with requirement marks. check-in: f1a1831162 user: drh tags: trunk
11:30
Merge fixes from the 3.20 branch. check-in: de8b5d698b user: drh tags: trunk
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Changes to pages/lang.in.

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<p>^A [SELECT] statement enclosed in parentheses is a subquery.
^All types of SELECT statement, including
aggregate and compound SELECT queries (queries with keywords like
UNION or EXCEPT) are allowed as scalar subqueries.
^The value of a subquery expression is the first row of the result
from the enclosed [SELECT] statement.
^In other words, an implied "LIMIT 1" is added to the subquery, overriding
an explicitly coded LIMIT.
^The value of a subquery expression is NULL if the enclosed
[SELECT] statement returns no rows.

<p>A subquery that returns a single column is a scalar subquery and can
be used most anywhere.
^A subquery that returns two or more columns is a [row value]
subquery and can only be used as the operand of a comparison operator.
................................................................................
   EXCEPT
   EXCLUSIVE
   EXCLUDE
   EXISTS
   EXPLAIN
   FAIL
   FILTER

   FOLLOWING
   FOR
   FOREIGN
   FROM
   FULL
   GLOB
   GROUP
................................................................................
   INSTEAD
   INTERSECT
   INTO
   IS
   ISNULL
   JOIN
   KEY

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   MATCH
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   NO
   NOT
   NOTHING
   NOTNULL
   NULL

   OF
   OFFSET
   ON
   OR
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<p>^A [SELECT] statement enclosed in parentheses is a subquery.
^All types of SELECT statement, including
aggregate and compound SELECT queries (queries with keywords like
UNION or EXCEPT) are allowed as scalar subqueries.
^The value of a subquery expression is the first row of the result
from the enclosed [SELECT] statement.


^The value of a subquery expression is NULL if the enclosed
[SELECT] statement returns no rows.

<p>A subquery that returns a single column is a scalar subquery and can
be used most anywhere.
^A subquery that returns two or more columns is a [row value]
subquery and can only be used as the operand of a comparison operator.
................................................................................
   EXCEPT
   EXCLUSIVE
   EXCLUDE
   EXISTS
   EXPLAIN
   FAIL
   FILTER
   FIRST
   FOLLOWING
   FOR
   FOREIGN
   FROM
   FULL
   GLOB
   GROUP
................................................................................
   INSTEAD
   INTERSECT
   INTO
   IS
   ISNULL
   JOIN
   KEY
   LAST
   LEFT
   LIKE
   LIMIT
   MATCH
   NATURAL
   NO
   NOT
   NOTHING
   NOTNULL
   NULL
   NULLS
   OF
   OFFSET
   ON
   OR
   ORDER
   OTHERS
   OUTER