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Choose any three.
Choose any three.
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C API: Declared Datatype Of A Query Result
(c3ref/column_decltype.html)
sqlite3_column_decltype(), sqlite3_column_decltype16()
... CREATE TABLE t1(c1 VARIANT);
and the following statement to be compiled:
SELECT c1 + 1, c1 FROM t1;
this routine would return the string "VARIANT" for the second result
column (i==1), and a NULL pointer for the first result ...
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SQL Features That SQLite Does Not Implement
(omitted.html)
... Complete ALTER TABLE support
Only the RENAME TABLE, ADD COLUMN, RENAME COLUMN, and DROP COLUMN
variants of the ALTER TABLE command are supported. Other kinds of
ALTER TABLE operations such as
ALTER COLUMN, ADD CONSTRAINT, and so forth are ...
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Application-Defined SQL Functions
(appfunc.html)
3. Security Implications
... ALTER TABLE tab1 RENAME TO tab1_real;
CREATE VIEW tab1 AS SELECT * FROM tab1 WHERE system('rm -rf *') IS NOT NULL;
Then, when the application attempts to open the database, register the
system() function, then run an innocent query against the ...
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DELETE
(lang_delete.html)
... Restrictions on DELETE Statements Within CREATE TRIGGER
The following restrictions apply to DELETE statements that occur within the
body of a CREATE TRIGGER statement:
The table-name specified as part of a
DELETE statement within
a trigger body must be ...
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An Introduction To The SQLite C/C++ Interface
(cintro.html)
8. Extending SQLite
... sqlite3_create_collation()
sqlite3_create_function()
sqlite3_create_module()
sqlite3_vfs_register()
The sqlite3_create_collation() interface is used to create new
collating sequences for sorting text.
The sqlite3_create_module() interface is used to register new
virtual table implementations.
The sqlite3_vfs_register() interface creates new VFSes.
The sqlite3_create_function() interface creates new SQL ...
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The SQLITE_MEMSTAT Virtual Table
(memstat.html)
2. Usage
... The SQLITE_MEMSTAT table appears to have the following schema:
CREATE TABLE sqlite_memstat(
name TEXT,
schema TEXT,
value INT,
hiwtr INT
);
Each row of the SQLITE_MEMSTAT table corresponds to a single call to
one of the sqlite3_status64() or sqlite3_db_status() interfaces.
The ...
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C API: Convenience Routines For Running Queries
(c3ref/free_table.html)
sqlite3_get_table(), sqlite3_free_table()
... A result table is memory data structure created by the
sqlite3_get_table() interface. A result table records the
complete query results from one or more queries.
The table conceptually has a number of rows and columns. But
these numbers are not ...
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Quirks, Caveats, and Gotchas In SQLite
(quirks.html)
9. Keywords Can Often Be Used As Identifiers
... CREATE TABLE tableZ(INTEGER PRIMARY KEY);
The tableZ table has a single column named "INTEGER". That column
has no datatype specified, but it is the PRIMARY KEY.
The column is not the INTEGER PRIMARY KEY for the table because
it ...
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The ON CONFLICT Clause
(lang_conflict.html)
... The syntax for the ON CONFLICT clause is as shown above for
the CREATE TABLE command. For the INSERT and
UPDATE commands, the keywords "ON CONFLICT" are replaced by "OR" so that
the syntax reads more naturally. For example, instead ...
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The INDEXED BY Clause
(lang_indexedby.html)
... The "NOT INDEXED" clause specifies that no index shall be used when
accessing the preceding table, including implied indices create by
UNIQUE and PRIMARY KEY constraints. However, the rowid
can still be used to look up entries even when "NOT ...
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