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SQLite Older News
(oldnews.html)
 ... This release also includes a new sorter that is able to use multiple threads to help with large sort operations. (Sort operations are sometimes required to implement ORDER BY and/or GROUP BY clauses and are almost always required for ... 
SQL Langauge Expressions
(lang_expr.html)
 ... The precedence of the BETWEEN operator is the same as the precedence as operators == and != and LIKE and groups left to right. 7. The CASE expression A CASE expression serves a role similar to IF-THEN-ELSE in other programming ... 
 ... But if you surround multiple INSERT statements with BEGIN...COMMIT then all the inserts are grouped into a single transaction. The time needed to commit the transaction is amortized over all the enclosed insert statements and so the time per ... 
2.3.1. Inputs  ... In addition to WHERE clause constraints, the SQLite core also tells the xBestIndex method about the ORDER BY clause. (In an aggregate query, the SQLite core might put in GROUP BY clause information in place of the ORDER BY clause ... 
 ... This template will be expanded considerably as we consider additional complications such as joins, compound selects, using indices to speed the search, sorting, and aggregate functions with and without GROUP BY and HAVING clauses. But the same basic ideas will ... 
 ... The transaction command can be used to group together several SQLite commands in a safe way. You can always start transactions manually using BEGIN, of course. But if an error occurs so that the COMMIT or ROLLBACK are never run ... 
 ... An SQLITE_OPEN_TRANSIENT_DB holds a database table that SQLite creates automatically in order to evaluate a subquery or ORDER BY or GROUP BY clause. Both TEMP_DB and TRANSIENT_DB databases are private and are deleted automatically. TEMP_DB databases last for the duration ... 
Database File Format
(fileformat.html)
1.6. B-tree Pages  ... If there is an isolated group of 1, 2, or 3 unused bytes within the cell content area, those bytes comprise a fragment. The total number of bytes in all fragments is stored in the fifth field of the b ... 

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