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Enable query planner tracing using the new (and undocumented) ".wheretrace 1"

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command in the command-line shell if both the shell and the core are
compiled with SQLITE_DEBUG and SQLITE_ENABLE_WHERETRACE.  This is not a 
supported API. Use for testing and debugging only.

FossilOrigin-Name: 1be4b16b9e900181ae6848f2920ea646f407c9dc
This commit is contained in:
drh
2012-09-21 22:50:45 +00:00
parent 078b1fda34
commit cef4fc89c4
4 changed files with 18 additions and 10 deletions
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7
src/shell.c
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@@ -2513,6 +2513,13 @@ static int do_meta_command(char *zLine, struct callback_data *p){
}
}else
#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_WHERETRACE)
if( c=='w' && strncmp(azArg[0], "wheretrace", n)==0 ){
extern int sqlite3WhereTrace;
sqlite3WhereTrace = atoi(azArg[1]);
}else
#endif
if( c=='w' && strncmp(azArg[0], "width", n)==0 && nArg>1 ){
int j;
assert( nArg<=ArraySize(azArg) );