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| 1 /* |
| 2 ** Link this program against an SQLite library of unknown provenance in order |
| 3 ** to display the compile-time maximum values for various settings. |
| 4 */ |
| 5 #include "sqlite3.h" |
| 6 #include <stdio.h> |
| 7 |
| 8 static const struct { |
| 9 int eCode; |
| 10 char *zName; |
| 11 } aLimit[] = { |
| 12 { SQLITE_LIMIT_LENGTH, "SQLITE_MAX_LENGTH" }, |
| 13 { SQLITE_LIMIT_SQL_LENGTH, "SQLITE_MAX_SQL_LENGTH" }, |
| 14 { SQLITE_LIMIT_COLUMN, "SQLITE_MAX_COLUMN" }, |
| 15 { SQLITE_LIMIT_EXPR_DEPTH, "SQLITE_MAX_EXPR_DEPTH" }, |
| 16 { SQLITE_LIMIT_COMPOUND_SELECT, "SQLITE_MAX_COMPOUND_SELECT" }, |
| 17 { SQLITE_LIMIT_VDBE_OP, "SQLITE_MAX_VDBE_OP" }, |
| 18 { SQLITE_LIMIT_FUNCTION_ARG, "SQLITE_MAX_FUNCTION_ARG" }, |
| 19 { SQLITE_LIMIT_ATTACHED, "SQLITE_MAX_ATTACHED" }, |
| 20 { SQLITE_LIMIT_LIKE_PATTERN_LENGTH, "SQLITE_MAX_LIKE_PATTERN_LENGTH" }, |
| 21 { SQLITE_LIMIT_VARIABLE_NUMBER, "SQLITE_MAX_VARIABLE_NUMBER" }, |
| 22 { SQLITE_LIMIT_TRIGGER_DEPTH, "SQLITE_MAX_TRIGGER_DEPTH" }, |
| 23 { SQLITE_LIMIT_WORKER_THREADS, "SQLITE_MAX_WORKER_THREADS" }, |
| 24 }; |
| 25 |
| 26 static int maxLimit(sqlite3 *db, int eCode){ |
| 27 int iOrig = sqlite3_limit(db, eCode, 0x7fffffff); |
| 28 return sqlite3_limit(db, eCode, iOrig); |
| 29 } |
| 30 |
| 31 int main(int argc, char **argv){ |
| 32 sqlite3 *db; |
| 33 int j, rc; |
| 34 rc = sqlite3_open(":memory:", &db); |
| 35 if( rc==SQLITE_OK ){ |
| 36 for(j=0; j<sizeof(aLimit)/sizeof(aLimit[0]); j++){ |
| 37 printf("%-35s %10d\n", aLimit[j].zName, maxLimit(db, aLimit[j].eCode)); |
| 38 } |
| 39 sqlite3_close(db); |
| 40 } |
| 41 } |
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