SQLite Release 3.26.0 On 2018-12-01
1. Optimization: When doing an UPDATE on a table with indexes on
expressions, do not update the expression indexes if they do not
refer to any of the columns of the table being updated.
2. Allow the xBestIndex() method of virtual table implementations to
return SQLITE_CONSTRAINT to indicate that the proposed query plan
is unusable and should not be given further consideration.
3. Added the SQLITE_DBCONFIG_DEFENSIVE option which disables the
ability to create corrupt database files using ordinary SQL.
4. Added support for read-only shadow tables when the
SQLITE_DBCONFIG_DEFENSIVE option is enabled.
5. Added the PRAGMA legacy_alter_table command, which if enabled
causes the ALTER TABLE command to behave like older version of
SQLite (prior to version 3.25.0) for compatibility.
6. Added PRAGMA table_xinfo that works just like PRAGMA table_info
except that it also shows hidden columns in virtual tables.
7. Added the explain virtual table as a run-time loadable extension.
8. Add a limit counter to the query planner to prevent excessive
sqlite3_prepare() times for certain pathological SQL inputs.
9. Added support for the sqlite3_normalized_sql() interface, when
compiling with SQLITE_ENABLE_NORMALIZE.
10. Enhanced triggers so that they can use table-valued functions
that exist in schemas other than the schema where the trigger is
defined.
11. Enhancements to the CLI:
a. Improvements to the ".help" command.
b. The SQLITE_HISTORY environment variable, if it exists,
specifies the name of the command-line editing history file
c. The --deserialize option associated with opening a new
database cause the database file to be read into memory and
accessed using the sqlite3_deserialize() API. This simplifies
running tests on a database without modifying the file on disk.
12. Enhancements to the geopoly extension:
a. Always stores polygons using the binary format, which is
faster and uses less space.
b. Added the geopoly_regular() function.
c. Added the geopoly_ccw() function.
13. Enhancements to the session extension:
a. Added the SQLITE_CHANGESETAPPLY_INVERT flag
b. Added the sqlite3changeset_start_v2() interface and the
SQLITE_CHANGESETSTART_INVERT flag.
c. Added the changesetfuzz.c test-case generator utility.
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christos
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@ -134,7 +134,7 @@ struct sqlite3_api_routines {
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int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
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const char*,const char*),void*);
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void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
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char * (*snprintf)(int,char*,const char*,...);
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char * (*xsnprintf)(int,char*,const char*,...);
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int (*step)(sqlite3_stmt*);
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int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
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char const**,char const**,int*,int*,int*);
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@ -246,7 +246,7 @@ struct sqlite3_api_routines {
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int (*uri_boolean)(const char*,const char*,int);
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sqlite3_int64 (*uri_int64)(const char*,const char*,sqlite3_int64);
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const char *(*uri_parameter)(const char*,const char*);
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char *(*vsnprintf)(int,char*,const char*,va_list);
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char *(*xvsnprintf)(int,char*,const char*,va_list);
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int (*wal_checkpoint_v2)(sqlite3*,const char*,int,int*,int*);
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/* Version 3.8.7 and later */
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int (*auto_extension)(void(*)(void));
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@ -282,6 +282,43 @@ struct sqlite3_api_routines {
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/* Version 3.14.0 and later */
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int (*trace_v2)(sqlite3*,unsigned,int(*)(unsigned,void*,void*,void*),void*);
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char *(*expanded_sql)(sqlite3_stmt*);
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/* Version 3.18.0 and later */
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void (*set_last_insert_rowid)(sqlite3*,sqlite3_int64);
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/* Version 3.20.0 and later */
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int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
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sqlite3_stmt**,const char**);
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int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
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sqlite3_stmt**,const void**);
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int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
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void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
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void *(*value_pointer)(sqlite3_value*,const char*);
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int (*vtab_nochange)(sqlite3_context*);
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int (*value_nochange)(sqlite3_value*);
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const char *(*vtab_collation)(sqlite3_index_info*,int);
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/* Version 3.24.0 and later */
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int (*keyword_count)(void);
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int (*keyword_name)(int,const char**,int*);
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int (*keyword_check)(const char*,int);
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sqlite3_str *(*str_new)(sqlite3*);
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char *(*str_finish)(sqlite3_str*);
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void (*str_appendf)(sqlite3_str*, const char *zFormat, ...);
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void (*str_vappendf)(sqlite3_str*, const char *zFormat, va_list);
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void (*str_append)(sqlite3_str*, const char *zIn, int N);
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void (*str_appendall)(sqlite3_str*, const char *zIn);
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void (*str_appendchar)(sqlite3_str*, int N, char C);
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void (*str_reset)(sqlite3_str*);
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int (*str_errcode)(sqlite3_str*);
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int (*str_length)(sqlite3_str*);
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char *(*str_value)(sqlite3_str*);
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/* Version 3.25.0 and later */
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int (*create_window_function)(sqlite3*,const char*,int,int,void*,
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void (*xStep)(sqlite3_context*,int,sqlite3_value**),
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void (*xFinal)(sqlite3_context*),
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void (*xValue)(sqlite3_context*),
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void (*xInv)(sqlite3_context*,int,sqlite3_value**),
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void(*xDestroy)(void*));
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/* Version 3.26.0 and later */
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const char *(*normalized_sql)(sqlite3_stmt*);
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};
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/*
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@ -408,7 +445,7 @@ typedef int (*sqlite3_loadext_entry)(
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#define sqlite3_rollback_hook sqlite3_api->rollback_hook
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#define sqlite3_set_authorizer sqlite3_api->set_authorizer
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#define sqlite3_set_auxdata sqlite3_api->set_auxdata
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#define sqlite3_snprintf sqlite3_api->snprintf
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#define sqlite3_snprintf sqlite3_api->xsnprintf
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#define sqlite3_step sqlite3_api->step
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#define sqlite3_table_column_metadata sqlite3_api->table_column_metadata
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#define sqlite3_thread_cleanup sqlite3_api->thread_cleanup
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@ -432,7 +469,7 @@ typedef int (*sqlite3_loadext_entry)(
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#define sqlite3_value_text16le sqlite3_api->value_text16le
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#define sqlite3_value_type sqlite3_api->value_type
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#define sqlite3_vmprintf sqlite3_api->vmprintf
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#define sqlite3_vsnprintf sqlite3_api->vsnprintf
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#define sqlite3_vsnprintf sqlite3_api->xvsnprintf
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#define sqlite3_overload_function sqlite3_api->overload_function
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#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
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#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
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@ -508,7 +545,7 @@ typedef int (*sqlite3_loadext_entry)(
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#define sqlite3_uri_boolean sqlite3_api->uri_boolean
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#define sqlite3_uri_int64 sqlite3_api->uri_int64
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#define sqlite3_uri_parameter sqlite3_api->uri_parameter
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#define sqlite3_uri_vsnprintf sqlite3_api->vsnprintf
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#define sqlite3_uri_vsnprintf sqlite3_api->xvsnprintf
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#define sqlite3_wal_checkpoint_v2 sqlite3_api->wal_checkpoint_v2
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/* Version 3.8.7 and later */
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#define sqlite3_auto_extension sqlite3_api->auto_extension
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@ -540,6 +577,37 @@ typedef int (*sqlite3_loadext_entry)(
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/* Version 3.14.0 and later */
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#define sqlite3_trace_v2 sqlite3_api->trace_v2
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#define sqlite3_expanded_sql sqlite3_api->expanded_sql
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/* Version 3.18.0 and later */
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#define sqlite3_set_last_insert_rowid sqlite3_api->set_last_insert_rowid
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/* Version 3.20.0 and later */
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#define sqlite3_prepare_v3 sqlite3_api->prepare_v3
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#define sqlite3_prepare16_v3 sqlite3_api->prepare16_v3
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#define sqlite3_bind_pointer sqlite3_api->bind_pointer
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#define sqlite3_result_pointer sqlite3_api->result_pointer
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#define sqlite3_value_pointer sqlite3_api->value_pointer
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/* Version 3.22.0 and later */
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#define sqlite3_vtab_nochange sqlite3_api->vtab_nochange
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#define sqlite3_value_nochange sqlite3_api->value_nochange
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#define sqlite3_vtab_collation sqlite3_api->vtab_collation
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/* Version 3.24.0 and later */
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#define sqlite3_keyword_count sqlite3_api->keyword_count
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#define sqlite3_keyword_name sqlite3_api->keyword_name
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#define sqlite3_keyword_check sqlite3_api->keyword_check
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#define sqlite3_str_new sqlite3_api->str_new
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#define sqlite3_str_finish sqlite3_api->str_finish
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#define sqlite3_str_appendf sqlite3_api->str_appendf
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#define sqlite3_str_vappendf sqlite3_api->str_vappendf
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#define sqlite3_str_append sqlite3_api->str_append
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#define sqlite3_str_appendall sqlite3_api->str_appendall
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#define sqlite3_str_appendchar sqlite3_api->str_appendchar
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#define sqlite3_str_reset sqlite3_api->str_reset
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#define sqlite3_str_errcode sqlite3_api->str_errcode
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#define sqlite3_str_length sqlite3_api->str_length
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#define sqlite3_str_value sqlite3_api->str_value
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/* Version 3.25.0 and later */
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#define sqlite3_create_window_function sqlite3_api->create_window_function
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/* Version 3.26.0 and later */
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#define sqlite3_normalized_sql sqlite3_api->normalized_sql
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#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
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#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
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