NAME
SQLITE_LIMIT_LENGTH,
SQLITE_LIMIT_SQL_LENGTH,
SQLITE_LIMIT_COLUMN,
SQLITE_LIMIT_EXPR_DEPTH,
SQLITE_LIMIT_COMPOUND_SELECT,
SQLITE_LIMIT_VDBE_OP,
SQLITE_LIMIT_FUNCTION_ARG,
SQLITE_LIMIT_ATTACHED,
SQLITE_LIMIT_LIKE_PATTERN_LENGTH,
SQLITE_LIMIT_VARIABLE_NUMBER,
SQLITE_LIMIT_TRIGGER_DEPTH,
SQLITE_LIMIT_WORKER_THREADS —
Run-Time Limit Categories
SYNOPSIS
#define SQLITE_LIMIT_LENGTH
#define SQLITE_LIMIT_SQL_LENGTH
#define SQLITE_LIMIT_COLUMN
#define SQLITE_LIMIT_EXPR_DEPTH
#define SQLITE_LIMIT_COMPOUND_SELECT
#define SQLITE_LIMIT_VDBE_OP
#define SQLITE_LIMIT_FUNCTION_ARG
#define SQLITE_LIMIT_ATTACHED
#define SQLITE_LIMIT_LIKE_PATTERN_LENGTH
#define SQLITE_LIMIT_VARIABLE_NUMBER
#define SQLITE_LIMIT_TRIGGER_DEPTH
#define SQLITE_LIMIT_WORKER_THREADS
DESCRIPTION
These constants define various performance limits that can be lowered at
run-time using sqlite3_limit(). The synopsis of the meanings of the various
limits is shown below. Additional information is available at Limits in
SQLite.
-
-
- 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 a SELECT or the maximum number of columns in an index or
in an ORDER BY or GROUP BY clause.
-
-
- SQLITE_LIMIT_EXPR_DEPTH
- The maximum depth of the parse tree on any expression.
-
-
- SQLITE_LIMIT_COMPOUND_SELECT
- The maximum number of terms in a compound SELECT
statement.
-
-
- SQLITE_LIMIT_VDBE_OP
- The maximum number of instructions in a virtual machine
program used to implement an SQL statement. This limit is not currently
enforced, though that might be added in some future release of
SQLite.
-
-
- SQLITE_LIMIT_FUNCTION_ARG
- The maximum number of arguments on a function.
-
-
- SQLITE_LIMIT_ATTACHED
- The maximum number of attached databases.
-
-
- SQLITE_LIMIT_LIKE_PATTERN_LENGTH
- The maximum length of the pattern argument to the LIKE or
GLOB operators.
-
-
- SQLITE_LIMIT_VARIABLE_NUMBER
- The maximum index number of any parameter in an SQL
statement.
-
-
- SQLITE_LIMIT_TRIGGER_DEPTH
- The maximum depth of recursion for triggers.
-
-
- SQLITE_LIMIT_WORKER_THREADS
- The maximum number of auxiliary worker threads that a
single prepared statement may start.
SEE ALSO
sqlite3_stmt(3),
sqlite3_limit(3)