diff options
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index 158005265..b1b04725a 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -1498,6 +1498,22 @@ struct AggInfo { }; /* +** The datatype ynVar is a signed integer, either 16-bit or 32-bit. +** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater +** than 32767 we have to make it 32-bit. 16-bit is preferred because +** it uses less memory in the Expr object, which is a big memory user +** in systems with lots of prepared statements. And few applications +** need more than about 10 or 20 variables. But some extreme users want +** to have prepared statements with over 32767 variables, and for them +** the option is available (at compile-time). +*/ +#if SQLITE_MAX_VARIABLE_NUMBER<=32767 +typedef i64 ynVar; +#else +typedef int ynVar; +#endif + +/* ** Each node of an expression in the parse tree is an instance ** of this structure. ** @@ -1590,13 +1606,8 @@ struct Expr { int iTable; /* TK_COLUMN: cursor number of table holding column ** TK_REGISTER: register number ** TK_TRIGGER: 1 -> new, 0 -> old */ -#if SQLITE_MAX_VARIABLE_NUMBER<=32767 - i16 iColumn; /* TK_COLUMN: column index. -1 for rowid. + ynVar iColumn; /* TK_COLUMN: column index. -1 for rowid. ** TK_VARIABLE: variable number (always >= 1). */ -#else - int iColumn; /* Some users want a lot of variables and are willing - ** to bear the memory and performance costs. */ -#endif i16 iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */ i16 iRightJoinTable; /* If EP_FromJoin, the right table of the join */ u8 flags2; /* Second set of flags. EP2_... */ |