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3.5. Other Example VFSes  ... An auxiliary interface is used to define "quota groups". A quota group is a set of files (database files, journals, and temporary files) whose names all match a GLOB pattern. The sum of the sizes of all files in each ... 
 ... The original reference implementation for libpng Libjpeg from the Independent JPEG Group Libc is omitted from the above list even though it is more common than SQLite because libc is not a single software component but rather several competing implementations ... 
2.8. Transient Indices  ... SQLite implements GROUP BY by ordering the output rows in the order suggested by the GROUP BY terms. Each output row is compared to the previous to see if it starts a new "group". The ordering by GROUP BY terms ... 
1. Overview  ... One can use the CSV virtual table inside subqueries, or common table expressions or add WHERE, GROUP BY, HAVING, ORDER BY, and LIMIT clauses as required.
 ... SQLite works best if you group multiple operations together into a single transaction. The results presented here come with the following caveats: These tests did not attempt to measure multi-user performance or optimization of complex queries involving multiple joins ... 
Vulnerabilities
(cves.html)
2.3. The SQLite Developer Policy Toward CVEs  ... The developers have no editorial influence on the content of CVEs, and they do not like to be controlled by groups in which they have no voice.
The Checksum VFS Shim
(cksumvfs.html)
5. Verification Of Checksums  ... SELECT count(*), verify_checksum(data) FROM sqlite_dbpage GROUP BY 2; There are three possible outputs from the verify_checksum() function: 1, 0, and NULL. 1 is returned if the checksum is correct. 0 is returned if the checksum is incorrect. NULL is ... 
SQLite FTS5 Extension
(fts5.html)
3.7. FTS5 Boolean Operators Phrases and NEAR groups may be arranged into expressions using boolean operators. In order of precedence, from highest (tightest grouping) to lowest (loosest grouping), the operators are: Operator Function <query1> NOT <query2> Matches if query1 matches ... 
The WITH Clause
(lang_with.html)
 ... cx, cy) AS ( SELECT max(iter), cx, cy FROM m GROUP BY cx, cy ), a(t) AS ( SELECT group_concat( substr(' .+*#', 1+min(iter/7,4), 1), '') FROM m2 GROUP BY cy ) SELECT group_concat(rtrim(t),x'0a') FROM a; In ... 
10. ORDER BY optimizations  ... SQLite will also attempt to use indices to help satisfy GROUP BY clauses and the DISTINCT keyword. If the nested loops of the join can be arranged such that rows that are equivalent for the GROUP BY or for the ... 

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