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Overview
| Comment: | In the "pgidx" report from "showdb", also show the number of rows on each database btree page. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
2bda9dc41c07092ae37d0c6001c1271e |
| User & Date: | drh 2019-04-17 13:23:28 |
Context
|
2019-04-17
| ||
| 13:58 | Fix a typo in the CLI help output for the ".dump" command. check-in: 57638248 user: drh tags: trunk | |
| 13:23 | In the "pgidx" report from "showdb", also show the number of rows on each database btree page. check-in: 2bda9dc4 user: drh tags: trunk | |
| 12:29 | In the "pgidx" command of the showdb utility, try to identify orphaned pages and show when pages have been zeroed out. check-in: eed701ef user: drh tags: trunk | |
Changes
Changes to tool/showdb.c.
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const char *zName /* Name of the table */
){
unsigned char *a;
const char *zType = "corrupt node";
int nCell;
int i;
int hdr = pgno==1 ? 100 : 0;
if( pgno<=0 || pgno>g.mxPage ) return;
a = fileRead((pgno-1)*g.pagesize, g.pagesize);
switch( a[hdr] ){
case 0: {
if( allZero(a, g.pagesize) ){
zType = "zeroed page";
................................................................................
case 10: zType = "leaf of index"; break;
case 13: zType = "leaf of table"; break;
default: {
if( parent<0 ) return;
zType = "corrupt node";
}
}
if( parent>0 ){
page_usage_msg(pgno, "%s [%s], child %d of page %d",
zType, zName, idx, parent);
}else if( parent==0 ){
page_usage_msg(pgno, "root %s [%s]", zType, zName);
}else{
page_usage_msg(pgno, "orphaned %s", zType);
}
nCell = a[hdr+3]*256 + a[hdr+4];
if( a[hdr]==2 || a[hdr]==5 ){
int cellstart = hdr+12;
unsigned int child;
for(i=0; i<nCell; i++){
int ofst;
ofst = cellstart + i*2;
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const char *zName /* Name of the table */
){
unsigned char *a;
const char *zType = "corrupt node";
int nCell;
int i;
int hdr = pgno==1 ? 100 : 0;
char zEntry[30];
if( pgno<=0 || pgno>g.mxPage ) return;
a = fileRead((pgno-1)*g.pagesize, g.pagesize);
switch( a[hdr] ){
case 0: {
if( allZero(a, g.pagesize) ){
zType = "zeroed page";
................................................................................
case 10: zType = "leaf of index"; break;
case 13: zType = "leaf of table"; break;
default: {
if( parent<0 ) return;
zType = "corrupt node";
}
}
nCell = a[hdr+3]*256 + a[hdr+4];
if( nCell==1 ){
sqlite3_snprintf(sizeof(zEntry),zEntry,"1 row");
}else{
sqlite3_snprintf(sizeof(zEntry),zEntry,"%d rows", nCell);
}
if( parent>0 ){
page_usage_msg(pgno, "%s [%s], child %d of page %d, %s",
zType, zName, idx, parent, zEntry);
}else if( parent==0 ){
page_usage_msg(pgno, "root %s [%s], %s", zType, zName, zEntry);
}else{
page_usage_msg(pgno, "orphaned %s, %s", zType, zEntry);
}
if( a[hdr]==2 || a[hdr]==5 ){
int cellstart = hdr+12;
unsigned int child;
for(i=0; i<nCell; i++){
int ofst;
ofst = cellstart + i*2;
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