Small. Fast. Reliable.
Choose any three.
Choose any three.
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Many Small Queries Are Efficient In SQLite
(np1queryprob.html)
4. The Need For Over 200 SQL Statements Per Webpage
... CROSS JOIN blob WHERE blob.rid=event.objid AND mtime<=2457647.121412037);
SELECT max(timestamp) FROM timeline;
SELECT julianday('2016-09-24 17:42:43',fromLocal());
SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob WHERE blob.rid=event ...
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SQL Language Expressions
(lang_expr.html)
... Note that the result from casting any non-BLOB value into a
BLOB and the result from casting any BLOB value into a non-BLOB value
may be different depending on whether the database encoding is UTF-8,
UTF-16be ...
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Pointer Passing Interfaces
(bindptr.html)
2.1. Upping The Threat Level
Passing around pointers as if they were integers or BLOBs is easy,
effective, and works well in an environment where the application
components are all friendly toward one another. However, passing pointers
as integers and BLOBs allows hostile SQL text ...
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Implementation Limits For SQLite
(limits.html)
... Maximum length of a string or BLOB
The maximum number of bytes in a string or BLOB in SQLite is defined
by the preprocessor macro SQLITE_MAX_LENGTH. The default value
of this macro is 1 billion (1 thousand million or 1 ...
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The Session Extension
(sessionintro.html)
3.1. Capturing a Changeset
... Size of changeset blob in bytes */
void **ppChangeset /* OUT: Pointer to changeset blob */
){
sqlite3_session *pSession = 0;
int rc;
/* Create a new session object */
rc = sqlite3session_create(db, "main", &pSession);
/* Configure the session object to record changes to all tables */
if( rc ...
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The Advantages Of Flexible Typing
(flextypegood.html)
2. About Flexible Typing
... Column DatatypeTypes Allowed In That Column
INTEGERINTEGER, REAL, TEXT, BLOB
REALREAL, TEXT, BLOB
TEXTTEXT, BLOB
BLOBINTEGER, REAL, TEXT, BLOB
Note that an INTEGER or REAL value will never end up being stored
in a TEXT column, since an INTEGER or ...
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SQLite As An Application File Format
(appfileformat.html)
... But many developers are surprised to learn that SQLite can read and
write smaller BLOBs (less than about 100KB in size) from its database
faster than those same blobs can be read or written as separate files
from the filesystem ...
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The Carray() Table-Valued Function
(carray.html)
2. Availability
... The ability to bind an array of struct iovec
objects that are interpreted as BLOBs was added in SQLite version 3.41.0
(2023-02-21).
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Clustered Indexes and the WITHOUT ROWID Optimization
(withoutrowid.html)
2. Differences From Ordinary Rowid Tables
... The incremental blob I/O mechanism does not work
for WITHOUT ROWID tables.
Incremental BLOB I/O uses the rowid to create an sqlite3_blob object for
doing the direct I/O. However, WITHOUT ROWID tables do not have a rowid ...
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C API: Run-Time Limit Categories
(c3ref/c_limit_attached.html)
SQLITE_LIMIT_LENGTH, SQLITE_LIMIT_SQL_LENGTH, SQLITE_LIMIT_COLUMN, SQLITE_LIMIT_EXPR_DEPTH, SQLITE_LIMIT_COMPOUND_SELECT, SQLITE_LIMIT_VDBE_OP ...
... SQLITE_LIMIT_LENGTH
The maximum size of any string or BLOB or table row, in bytes.
SQLITE_LIMIT_SQL_LENGTH
The maximum length of an SQL statement, in bytes.
SQLITE_LIMIT_COLUMN
The maximum number of columns in a table definition or in the
result set of ...
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