SQLITE_LIMIT_LENGTH(3)

SQLITE_LIMIT_LENGTH(3) | Library Functions Manual | SQLITE_LIMIT_LENGTH(3)

# 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

`#include <sqlite3.h>`

`#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. If `sqlite3_prepare_v2`() or the equivalent tries to allocate space for more than this many opcodes in a single prepared statement, an SQLITE_NOMEM error is returned.
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.

# IMPLEMENTATION NOTES

These declarations were extracted from the interface documentation at line 4068.

    #define SQLITE_LIMIT_LENGTH                    0
    #define SQLITE_LIMIT_SQL_LENGTH                1
    #define SQLITE_LIMIT_COLUMN                    2
    #define SQLITE_LIMIT_EXPR_DEPTH                3
    #define SQLITE_LIMIT_COMPOUND_SELECT           4
    #define SQLITE_LIMIT_VDBE_OP                   5
    #define SQLITE_LIMIT_FUNCTION_ARG              6
    #define SQLITE_LIMIT_ATTACHED                  7
    #define SQLITE_LIMIT_LIKE_PATTERN_LENGTH       8
    #define SQLITE_LIMIT_VARIABLE_NUMBER           9
    #define SQLITE_LIMIT_TRIGGER_DEPTH            10
    #define SQLITE_LIMIT_WORKER_THREADS           11

# SEE ALSO

sqlite3_limit(3), sqlite3_prepare(3), sqlite3_stmt(3)

January 24, 2024 | NetBSD 11.0