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Overview
| Comment: | Update the documentation to state that the LIMIT of a scalar subquery is always 1. |
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| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 8d37b80354ffac6b7f53cf6f1e83fe57ead338d0 |
| User & Date: | drh 2011-05-31 11:56:47 |
Context
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2011-06-04
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| 23:20 | Fix a missing end-requirement mark in the expression documentation. check-in: 957ac800cf user: drh tags: trunk | |
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2011-05-31
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| 11:56 | Update the documentation to state that the LIMIT of a scalar subquery is always 1. check-in: 8d37b80354 user: drh tags: trunk | |
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2011-05-25
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| 14:51 | A tweak to the 8+3 filename documentation. Update to the change log. check-in: 6f298c3ff3 user: drh tags: trunk | |
Changes
Changes to pages/lang.in.
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<p>^A [SELECT] statement enclosed in parentheses may appear as a scalar quantity. ^A [SELECT] used as a scalar quantity must return a result set with a single column. ^The result of the expression is the value of the only column in the first row returned by the SELECT statement. ^If the SELECT yields more than one result row, all rows after the first are ignored. ^If the SELECT yields no rows, then the value of the expression is NULL. <p>^All types of [SELECT] statement, including aggregate and compound SELECT queries (queries with keywords like UNION or EXCEPT) are allowed as scalar subqueries. <h3>Table Column Names</h3> |
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<p>^A [SELECT] statement enclosed in parentheses may appear as a scalar quantity. ^A [SELECT] used as a scalar quantity must return a result set with a single column. ^The result of the expression is the value of the only column in the first row returned by the SELECT statement. ^If the SELECT yields more than one result row, all rows after the first are ignored. ^If the SELECT yields no rows, then the value of the expression is NULL. ^(The LIMIT of a scalar subquery is always 1. Any other LIMIT value given in the SQL text is ignored.) <p>^All types of [SELECT] statement, including aggregate and compound SELECT queries (queries with keywords like UNION or EXCEPT) are allowed as scalar subqueries. <h3>Table Column Names</h3> |