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@@ -125,7 +125,7 @@ extern "C" {
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*/
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#define SQLITE_VERSION "3.34.0"
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#define SQLITE_VERSION_NUMBER 3034000
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-#define SQLITE_SOURCE_ID "2020-10-07 11:24:45 54b54f02c66c5aeaa3504c52a04614e2fb4d7260da8367840d5ea5a71cdcalt1"
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+#define SQLITE_SOURCE_ID "2020-11-20 14:16:41 07f53899a929cce93f17c0332819610c9517c7e54e00092af20efd746cf8alt1"
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/*
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** CAPI3REF: Run-Time Library Version Numbers
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@@ -504,6 +504,7 @@ SQLITE_API int sqlite3_exec(
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#define SQLITE_IOERR_COMMIT_ATOMIC (SQLITE_IOERR | (30<<8))
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#define SQLITE_IOERR_ROLLBACK_ATOMIC (SQLITE_IOERR | (31<<8))
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#define SQLITE_IOERR_DATA (SQLITE_IOERR | (32<<8))
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+#define SQLITE_IOERR_CORRUPTFS (SQLITE_IOERR | (33<<8))
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#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8))
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#define SQLITE_LOCKED_VTAB (SQLITE_LOCKED | (2<<8))
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#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
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@@ -9311,10 +9312,11 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
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** CAPI3REF: Determine If Virtual Table Column Access Is For UPDATE
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**
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** If the sqlite3_vtab_nochange(X) routine is called within the [xColumn]
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-** method of a [virtual table], then it returns true if and only if the
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+** method of a [virtual table], then it might return true if the
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** column is being fetched as part of an UPDATE operation during which the
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-** column value will not change. Applications might use this to substitute
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-** a return value that is less expensive to compute and that the corresponding
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+** column value will not change. The virtual table implementation can use
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+** this hint as permission to substitute a return value that is less
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+** expensive to compute and that the corresponding
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** [xUpdate] method understands as a "no-change" value.
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**
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** If the [xColumn] method calls sqlite3_vtab_nochange() and finds that
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@@ -9323,6 +9325,12 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *);
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** any of the [sqlite3_result_int|sqlite3_result_xxxxx() interfaces].
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** In that case, [sqlite3_value_nochange(X)] will return true for the
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** same column in the [xUpdate] method.
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+**
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+** The sqlite3_vtab_nochange() routine is an optimization. Virtual table
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+** implementations should continue to give a correct answer even if the
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+** sqlite3_vtab_nochange() interface were to always return false. In the
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+** current implementation, the sqlite3_vtab_nochange() interface does always
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+** returns false for the enhanced [UPDATE FROM] statement.
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*/
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SQLITE_API int sqlite3_vtab_nochange(sqlite3_context*);
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mingodad