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Add an sqlite3_db_config() option - SQLITE_DBCONFIG_STMT_SCANSTATS - for enabling and disabling the collection of sqlite3_stmt_scanstats() statistics in SQLITE_ENABLE_STMT_SCANSTATUS builds. Collection of statistics is disabled by default.

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FossilOrigin-Name: 0f5579bef27b84ee855065cfe87703c51e1f9773906a9e0d4e4dafc90bd0e553
This commit is contained in:
dan
2023-02-28 19:39:59 +00:00
parent 4990fc84f1
commit 45163fc45e
14 changed files with 155 additions and 95 deletions
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9
src/sqliteInt.h
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@@ -1757,7 +1757,7 @@ struct sqlite3 {
#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
/* result set is empty */
#define SQLITE_IgnoreChecks 0x00000200 /* Do not enforce check constraints */
#define SQLITE_ReadUncommit 0x00000400 /* READ UNCOMMITTED in shared-cache */
#define SQLITE_StmtScanStats 0x00000400 /* Enable stmt_scanstats() counters */
#define SQLITE_NoCkptOnClose 0x00000800 /* No checkpoint on close()/DETACH */
#define SQLITE_ReverseOrder 0x00001000 /* Reverse unordered SELECTs */
#define SQLITE_RecTriggers 0x00002000 /* Enable recursive triggers */
@@ -1783,6 +1783,7 @@ struct sqlite3 {
/* DELETE, or UPDATE and return */
/* the count using a callback. */
#define SQLITE_CorruptRdOnly HI(0x00002) /* Prohibit writes due to error */
#define SQLITE_ReadUncommit HI(0x00004) /* READ UNCOMMITTED in shared-cache */
/* Flags used only if debugging */
#ifdef SQLITE_DEBUG
@@ -5581,4 +5582,10 @@ int sqlite3KvvfsInit(void);
sqlite3_uint64 sqlite3Hwtime(void);
#endif
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
# define IS_STMT_SCANSTATUS(db) (db->flags & SQLITE_StmtScanStats)
#else
# define IS_STMT_SCANSTATUS(db) 0
#endif
#endif /* SQLITEINT_H */