Documentation Source Text

    hd_enable_main 1
  }
}

chng {2013-03-12 (3.7.16)} {
<li>Added the [PRAGMA foreign_key_check] command.
<li>Added new extended error codes for all SQLITE_CONSTRAINT errors
<li>Added SQL functions [unicode(A)] and [char(X1,...,XN)].
<li>Improved optimization of queries containing aggregate min() or max().
<li>Enhance virtual tables so that they can potentially use an index when
    the WHERE clause contains the IN operator.
<li>Allow indices to be used for sorting even if prior terms of the index
    are constrained by IN operators in the WHERE clause.
<li>Enhance the [PRAGMA table_info] command so that the "pk" column is an
    increasing integer to show the order of columns in the primary key.

funcdef {changes()} {} {
  ^The changes() function returns the number of database rows that were changed
  or inserted or deleted by the most recently completed INSERT, DELETE,
  or UPDATE statement, exclusive of statements in lower-level triggers.
  ^The changes() SQL function is a wrapper around the [sqlite3_changes()]
  C/C++ function and hence follows the same rules for counting changes.
}

funcdef {char(X1,X2,...,XN)} {} {
  ^The char(X1,X2,...,XN) function returns a string composed of characters having the
   unicode code point values of integers X1 thorugh XN, respectively.
}

funcdef {coalesce(X,Y,...)} {} {
  ^The coalesce() function returns a copy of its first non-NULL argument, or
  NULL if all arguments are NULL.  ^Coalesce() must be at least 
  2 arguments.
}

  ^If the Y argument is omitted, trim(X) removes spaces from both ends of X.
}

funcdef {typeof(X)} {} {
  ^The typeof(X) function returns a string that indicates the [datatype] of
  the expression X: "null", "integer", "real", "text", or "blob".
}

funcdef {unicode(X)} {} {
  ^The unicode(X) function returns the numeric unicode code point corresponding to
  the first character of the string X.  ^If the argument to unicode(X) is not a string
  then the result is undefined.
}

funcdef {upper(X)} {} {
  ^The upper(X) function returns a copy of input string X in which all 
  lower-case ASCII characters are converted to their upper-case equivalent.
}

funcdef {zeroblob(N)} {} {