August 2010
Intermediate to advanced
526 pages
23h 39m
English
Content preview from Using SQLiteBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Name
sqlite3_trace() — Register an SQL statement trace callback [EXP]
Definition
void* sqlite3_trace( sqlite3* db, trace_callback, void* udp); void trace_callback( void* udp, const char* sql );
-
db A database connection.
-
trace_callback An application-defined trace callback function.
-
udp An application-defined user-data pointer. This value is made available to the trace function.
-
sql The text of the SQL statement that was executed, encoded in UTF-8.
- Returns (
sqlite3_trace()) The previous user-data pointer, if applicable.
Description
This function allows an application to register a trace function. The callback is called just before any SQL statement is processed. It may also be called when additional statements are processed, such as trigger bodies.
If the SQL text contains any statement parameters, these will be replaced with the actual values used for this execution.
See Also
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.