database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-10 01:02:56 +03:00
Code Activity

Add definitions of the CollSeq and KeyInfo structures. (CVS 1399)

Browse Source 
FossilOrigin-Name: cd1be81569aa6d5a365eb27b7d067a153079ce45
This commit is contained in:
drh
2004-05-18 23:21:35 +00:00
parent 428702d730
commit a9fd84b034
5 changed files with 49 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/sqliteInt.h
View File

@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.236 2004/05/18 10:06:26 danielk1977 Exp $
** @(#) $Id: sqliteInt.h,v 1.237 2004/05/18 23:21:36 drh Exp $
*/
#include "config.h"
#include "sqlite.h"
@@ -259,6 +259,7 @@ typedef struct FKey FKey;
typedef struct Db Db;
typedef struct AuthContext AuthContext;
typedef struct KeyClass KeyClass;
typedef struct CollSeq CollSeq;
/*
** Each database file to be accessed by the system is an instance
@@ -369,6 +370,8 @@ struct sqlite {
void *pCommitArg; /* Argument to xCommitCallback() */
int (*xCommitCallback)(void*);/* Invoked at every commit. */
Hash aFunc; /* All functions that can be in SQL exprs */
Hash aCollSeq; /* All collating sequences */
CollSeq *pDfltColl; /* The default collating sequence (memcmp) */
i64 lastRowid; /* ROWID of most recent insert (see above) */
i64 priorNewRowid; /* Last randomly generated ROWID */
int magic; /* Magic number for detect library misuse */
@@ -455,13 +458,30 @@ struct Column {
char *zName; /* Name of this column */
char *zDflt; /* Default value of this column */
char *zType; /* Data type for this column */
CollSeq *pColl; /* Collating sequence. If NULL, use the default */
u8 notNull; /* True if there is a NOT NULL constraint */
u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
// u8 sortOrder; /* Some combination of SQLITE_SO_... values */
char affinity; /* One of the SQLITE_AFF_... values */
u8 dottedName; /* True if zName contains a "." character */
};
/*
** A "Collating Sequence" is defined by an instance of the following
** structure. Every collating sequence has a name and a comparison
** function that defines the order of text for that sequence. The
** CollSeq.pUser parameter is an extra parameter that passed in as
** the first argument to the comparison function.
**
** If CollSeq.xCmp is NULL, it means that the collating sequence is
** undefined. Indices built on an undefined collating sequence may
** not be read or written.
*/
struct CollSeq {
char *zName; /* Name of the collating sequence */
void *pUser; /* First argument to xCmp() */
int (*xCmp)(void*,int,const void*,int,const void*); /* Comparison function */
};
/*
** The allowed sort orders.
**
@@ -705,6 +725,7 @@ struct Token {
struct Expr {
u8 op; /* Operation performed by this node */
u8 dataType; /* Either SQLITE_SO_TEXT or SQLITE_SO_NUM */
char affinity; /* The affinity of the column or 0 if not a column */
u8 iDb; /* Database referenced by this expression */
u8 flags; /* Various flags. See below */
Expr *pLeft, *pRight; /* Left and right subnodes */
@@ -718,7 +739,6 @@ struct Expr {
** result from the iAgg-th element of the aggregator */
Select *pSelect; /* When the expression is a sub-select. Also the
** right side of "<expr> IN (<select>)" */
char affinity; /* The affinity of the column or 0 if not a column */
};
/*