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Overview
Comment: | Add the fts3view utility program. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | fts4-incr-merge |
Files: | files | file ages | folders |
SHA1: |
f936c8ea16d21345fd1622272dc7e985 |
User & Date: | drh 2012-03-26 21:57:53.278 |
Context
2012-03-27
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00:34 | Enhance fts3view to show decodes of segments and doclists. (check-in: 6d09de231b user: drh tags: fts4-incr-merge) | |
2012-03-26
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21:57 | Add the fts3view utility program. (check-in: f936c8ea16 user: drh tags: fts4-incr-merge) | |
14:36 | Fix FTS3 so that it works even without SQLITE_DEBUG. (check-in: a18c103121 user: drh tags: fts4-incr-merge) | |
Changes
Added ext/fts3/tool/fts3view.c.
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Then run it as: ** ** fts3view DATABASE ** ** to get a list of all FTS3/4 tables in DATABASE, or do ** ** fts3view DATABASE TABLE COMMAND .... ** ** to see various aspects of the TABLE table. Type fts3view with no ** arguments for a list of available COMMANDs. */ #include <stdio.h> #include <stdarg.h> #include <stdlib.h> #include <string.h> #include "sqlite3.h" /* ** Extra command-line arguments: */ int nExtra; char **azExtra; /* ** Look for a command-line argument. */ const char *findOption(const char *zName, int hasArg, const char *zDefault){ int i; const char *zResult = zDefault; for(i=0; i<nExtra; i++){ const char *z = azExtra[i]; while( z[0]=='-' ) z++; if( strcmp(z, zName)==0 ){ int j = 1; if( hasArg==0 || i==nExtra-1 ) j = 0; zResult = azExtra[i+j]; while( i+j<nExtra ){ azExtra[i] = azExtra[i+j+1]; i++; } break; } } return zResult; } /* ** Prepare an SQL query */ static sqlite3_stmt *prepare(sqlite3 *db, const char *zFormat, ...){ va_list ap; char *zSql; sqlite3_stmt *pStmt; int rc; va_start(ap, zFormat); zSql = sqlite3_vmprintf(zFormat, ap); va_end(ap); rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); if( rc ){ fprintf(stderr, "Error: %s\nSQL: %s\n", sqlite3_errmsg(db), zSql); exit(1); } sqlite3_free(zSql); return pStmt; } /* ** Run an SQL statement */ static void runSql(sqlite3 *db, const char *zFormat, ...){ va_list ap; char *zSql; va_start(ap, zFormat); zSql = sqlite3_vmprintf(zFormat, ap); sqlite3_exec(db, zSql, 0, 0, 0); va_end(ap); } /* ** Show the table schema */ static void showSchema(sqlite3 *db, const char *zTab){ sqlite3_stmt *pStmt; pStmt = prepare(db, "SELECT sql FROM sqlite_master" " WHERE name LIKE '%q%%'" " ORDER BY 1", zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ printf("%s;\n", sqlite3_column_text(pStmt, 0)); } sqlite3_finalize(pStmt); pStmt = prepare(db, "PRAGMA page_size"); while( sqlite3_step(pStmt)==SQLITE_ROW ){ printf("PRAGMA page_size=%s;\n", sqlite3_column_text(pStmt, 0)); } sqlite3_finalize(pStmt); pStmt = prepare(db, "PRAGMA journal_mode"); while( sqlite3_step(pStmt)==SQLITE_ROW ){ printf("PRAGMA journal_mode=%s;\n", sqlite3_column_text(pStmt, 0)); } sqlite3_finalize(pStmt); } /* ** Read a 64-bit variable-length integer from memory starting at p[0]. ** Return the number of bytes read, or 0 on error. ** The value is stored in *v. */ int getVarint(const unsigned char *p, sqlite_int64 *v){ const unsigned char *q = p; sqlite_uint64 x = 0, y = 1; while( (*q&0x80)==0x80 && q-(unsigned char *)p<9 ){ x += y * (*q++ & 0x7f); y <<= 7; } x += y * (*q++); *v = (sqlite_int64) x; return (int) (q - (unsigned char *)p); } /* Show the content of the %_stat table */ static void showStat(sqlite3 *db, const char *zTab){ sqlite3_stmt *pStmt; pStmt = prepare(db, "SELECT id, value FROM '%q_stat'", zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ printf("stat[%d] =", sqlite3_column_int(pStmt, 0)); switch( sqlite3_column_type(pStmt, 1) ){ case SQLITE_INTEGER: { printf(" %d\n", sqlite3_column_int(pStmt, 1)); break; } case SQLITE_BLOB: { unsigned char *x = (unsigned char*)sqlite3_column_blob(pStmt, 1); int len = sqlite3_column_bytes(pStmt, 1); int i = 0; sqlite3_int64 v; while( i<len ){ i += getVarint(x, &v); printf(" %lld", v); } printf("\n"); break; } } } sqlite3_finalize(pStmt); } /* ** Report on the vocabulary. This creates an fts4aux table with a random ** name, but deletes it in the end. */ static void showVocabulary(sqlite3 *db, const char *zTab){ char *zAux; sqlite3_uint64 r; sqlite3_stmt *pStmt; int nDoc = 0; int nToken = 0; int nOccurrence = 0; int nTop; int n, i; sqlite3_randomness(sizeof(r), &r); zAux = sqlite3_mprintf("viewer_%llx", zTab, r); runSql(db, "BEGIN"); pStmt = prepare(db, "SELECT count(*) FROM %Q", zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ nDoc = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Number of documents...................... %9d\n", nDoc); runSql(db, "CREATE VIRTUAL TABLE %s USING fts4aux(%Q)", zAux, zTab); pStmt = prepare(db, "SELECT count(*), sum(occurrences) FROM %s WHERE col='*'", zAux); while( sqlite3_step(pStmt)==SQLITE_ROW ){ nToken = sqlite3_column_int(pStmt, 0); nOccurrence = sqlite3_column_int(pStmt, 1); } sqlite3_finalize(pStmt); printf("Total tokens in all documents............ %9d\n", nOccurrence); printf("Total number of distinct tokens.......... %9d\n", nToken); if( nToken==0 ) goto end_vocab; n = 0; pStmt = prepare(db, "SELECT count(*) FROM %s" " WHERE col='*' AND occurrences==1", zAux); while( sqlite3_step(pStmt)==SQLITE_ROW ){ n = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Tokens used exactly once................. %9d %5.2f%%\n", n, n*100.0/nToken); n = 0; pStmt = prepare(db, "SELECT count(*) FROM %s" " WHERE col='*' AND documents==1", zAux); while( sqlite3_step(pStmt)==SQLITE_ROW ){ n = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Tokens used in only one document......... %9d %5.2f%%\n", n, n*100.0/nToken); if( nDoc>=2000 ){ n = 0; pStmt = prepare(db, "SELECT count(*) FROM %s" " WHERE col='*' AND occurrences<=%d", zAux, nDoc/1000); while( sqlite3_step(pStmt)==SQLITE_ROW ){ n = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Tokens used in 0.1%% or less of docs...... %9d %5.2f%%\n", n, n*100.0/nToken); } if( nDoc>=200 ){ n = 0; pStmt = prepare(db, "SELECT count(*) FROM %s" " WHERE col='*' AND occurrences<=%d", zAux, nDoc/100); while( sqlite3_step(pStmt)==SQLITE_ROW ){ n = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Tokens used in 1%% or less of docs........ %9d %5.2f%%\n", n, n*100.0/nToken); } nTop = atoi(findOption("top", 1, "25")); printf("The %d most common tokens:\n", nTop); pStmt = prepare(db, "SELECT term, documents FROM %s" " WHERE col='*'" " ORDER BY documents DESC, term" " LIMIT %d", zAux, nTop); i = 0; while( sqlite3_step(pStmt)==SQLITE_ROW ){ i++; n = sqlite3_column_int(pStmt, 1); printf(" %2d. %-30s %9d docs %5.2f%%\n", i, sqlite3_column_text(pStmt, 0), n, n*100.0/nDoc); } sqlite3_finalize(pStmt); end_vocab: runSql(db, "ROLLBACK"); sqlite3_free(zAux); } /* ** Report on the number and sizes of segments */ static void showSegmentStats(sqlite3 *db, const char *zTab){ sqlite3_stmt *pStmt; int nSeg = 0; sqlite3_int64 szSeg = 0, mxSeg = 0; int nIdx = 0; sqlite3_int64 szIdx = 0, mxIdx = 0; int nRoot = 0; sqlite3_int64 szRoot = 0, mxRoot = 0; sqlite3_int64 mx; int nLeaf; int n; int pgsz; int mxLevel; int i; pStmt = prepare(db, "SELECT count(*), sum(length(block)), max(length(block))" " FROM '%q_segments'", zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ nSeg = sqlite3_column_int(pStmt, 0); szSeg = sqlite3_column_int64(pStmt, 1); mxSeg = sqlite3_column_int64(pStmt, 2); } sqlite3_finalize(pStmt); pStmt = prepare(db, "SELECT count(*), sum(length(block)), max(length(block))" " FROM '%q_segments' a JOIN '%q_segdir' b" " WHERE a.blockid BETWEEN b.leaves_end_block+1 AND b.end_block", zTab, zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ nIdx = sqlite3_column_int(pStmt, 0); szIdx = sqlite3_column_int64(pStmt, 1); mxIdx = sqlite3_column_int64(pStmt, 2); } sqlite3_finalize(pStmt); pStmt = prepare(db, "SELECT count(*), sum(length(root)), max(length(root))" " FROM '%q_segdir'", zTab); while( sqlite3_step(pStmt)==SQLITE_ROW ){ nRoot = sqlite3_column_int(pStmt, 0); szRoot = sqlite3_column_int64(pStmt, 1); mxRoot = sqlite3_column_int64(pStmt, 2); } sqlite3_finalize(pStmt); printf("Number of segments....................... %9d\n", nSeg+nRoot); printf("Number of leaf segments.................. %9d\n", nSeg-nIdx); printf("Number of index segments................. %9d\n", nIdx); printf("Number of root segments.................. %9d\n", nRoot); printf("Total size of all segments............... %9lld\n", szSeg+szRoot); printf("Total size of all leaf segments.......... %9lld\n", szSeg-szIdx); printf("Total size of all index segments......... %9lld\n", szIdx); printf("Total size of all root segments.......... %9lld\n", szRoot); if( nSeg>0 ){ printf("Average size of all segments............. %11.1f\n", (double)(szSeg+szRoot)/(double)(nSeg+nRoot)); printf("Average size of leaf segments............ %11.1f\n", (double)(szSeg-szIdx)/(double)(nSeg-nIdx)); } if( nIdx>0 ){ printf("Average size of index segments........... %11.1f\n", (double)szIdx/(double)nIdx); } if( nRoot>0 ){ printf("Average size of root segments............ %11.1f\n", (double)szRoot/(double)nRoot); } mx = mxSeg; if( mx<mxRoot ) mx = mxRoot; printf("Maximum segment size..................... %9lld\n", mx); printf("Maximum index segment size............... %9lld\n", mxIdx); printf("Maximum root segment size................ %9lld\n", mxRoot); pStmt = prepare(db, "PRAGMA page_size"); pgsz = 1024; while( sqlite3_step(pStmt)==SQLITE_ROW ){ pgsz = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); printf("Database page size....................... %9d\n", pgsz); pStmt = prepare(db, "SELECT count(*)" " FROM '%q_segments' a JOIN '%q_segdir' b" " WHERE a.blockid BETWEEN b.start_block AND b.leaves_end_block" " AND length(a.block)>%d", zTab, zTab, pgsz-45); n = 0; while( sqlite3_step(pStmt)==SQLITE_ROW ){ n = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); nLeaf = nSeg - nIdx; printf("Leaf segments larger than %5d bytes.... %9d %5.2f%%\n", pgsz-45, n, n*100.0/nLeaf); pStmt = prepare(db, "SELECT max(level%%1024) FROM '%q_segdir'", zTab); mxLevel = 0; while( sqlite3_step(pStmt)==SQLITE_ROW ){ mxLevel = sqlite3_column_int(pStmt, 0); } sqlite3_finalize(pStmt); for(i=0; i<=mxLevel; i++){ pStmt = prepare(db, "SELECT count(*), sum(len), avg(len), max(len), sum(len>%d)," " count(distinct idx)" " FROM (SELECT length(a.block) AS len, idx" " FROM '%q_segments' a JOIN '%q_segdir' b" " WHERE (a.blockid BETWEEN b.start_block" " AND b.leaves_end_block)" " AND (b.level%%1024)==%d)", pgsz-45, zTab, zTab, i); if( sqlite3_step(pStmt)==SQLITE_ROW && (nLeaf = sqlite3_column_int(pStmt, 0))>0 ){ int nIdx = sqlite3_column_int(pStmt, 5); sqlite3_int64 sz; printf("For level %d:\n", i); printf(" Number of indexes...................... %9d\n", nIdx); printf(" Number of leaf segments................ %9d\n", nLeaf); if( nIdx>1 ){ printf(" Average leaf segments per index........ %11.1f\n", (double)nLeaf/(double)nIdx); } printf(" Total size of all leaf segments........ %9lld\n", (sz = sqlite3_column_int64(pStmt, 1))); printf(" Average size of leaf segments.......... %11.1f\n", sqlite3_column_double(pStmt, 2)); if( nIdx>1 ){ printf(" Average leaf segment size per index.... %11.1f\n", (double)sz/(double)nIdx); } printf(" Maximum leaf segment size.............. %9lld\n", sqlite3_column_int64(pStmt, 3)); n = sqlite3_column_int(pStmt, 4); printf(" Leaf segments larger than %5d bytes.. %9d %5.2f%%\n", pgsz-45, n, n*100.0/nLeaf); } sqlite3_finalize(pStmt); } } /* ** Print a single "tree" line of the segdir map output. */ static void printTreeLine(sqlite3_int64 iLower, sqlite3_int64 iUpper){ printf(" tree %9lld", iLower); if( iUpper>iLower ){ printf(" thru %9lld (%lld blocks)", iUpper, iUpper-iLower+1); } printf("\n"); } /* ** Show a map of segments derived from the %_segdir table. */ static void showSegdirMap(sqlite3 *db, const char *zTab){ int mxIndex, iIndex; sqlite3_stmt *pStmt = 0; sqlite3_stmt *pStmt2 = 0; int prevLevel; pStmt = prepare(db, "SELECT max(level/1024) FROM '%q_segdir'", zTab); if( sqlite3_step(pStmt)==SQLITE_ROW ){ mxIndex = sqlite3_column_int(pStmt, 0); }else{ mxIndex = 0; } sqlite3_finalize(pStmt); printf("Number of inverted indices............... %3d\n", mxIndex+1); pStmt = prepare(db, "SELECT level, idx, start_block, leaves_end_block, end_block" " FROM '%q_segdir'" " WHERE level/1024==?" " ORDER BY level DESC, idx", zTab); pStmt2 = prepare(db, "SELECT blockid FROM '%q_segments'" " WHERE blockid BETWEEN ? AND ? ORDER BY blockid", zTab); for(iIndex=0; iIndex<=mxIndex; iIndex++){ if( mxIndex>0 ){ printf("**************************** Index %d " "****************************\n", iIndex); } sqlite3_bind_int(pStmt, 1, iIndex); prevLevel = -1; while( sqlite3_step(pStmt)==SQLITE_ROW ){ int iLevel = sqlite3_column_int(pStmt, 0)%1024; int iIdx = sqlite3_column_int(pStmt, 1); sqlite3_int64 iStart = sqlite3_column_int64(pStmt, 2); sqlite3_int64 iLEnd = sqlite3_column_int64(pStmt, 3); sqlite3_int64 iEnd = sqlite3_column_int64(pStmt, 4); if( iLevel!=prevLevel ){ printf("level %2d idx %2d", iLevel, iIdx); prevLevel = iLevel; }else{ printf(" idx %2d", iIdx); } if( iLEnd>iStart ){ sqlite3_int64 iLower, iPrev, iX; printf(" leaves %9lld thru %9lld (%lld blocks)\n", iStart, iLEnd, iLEnd - iStart + 1); if( iLEnd+1<=iEnd ){ sqlite3_bind_int64(pStmt2, 1, iLEnd+1); sqlite3_bind_int64(pStmt2, 2, iEnd); iLower = -1; while( sqlite3_step(pStmt2)==SQLITE_ROW ){ iX = sqlite3_column_int64(pStmt2, 0); if( iLower<0 ){ iLower = iPrev = iX; }else if( iX==iPrev+1 ){ iPrev = iX; }else{ printTreeLine(iLower, iPrev); iLower = iPrev = iX; } } sqlite3_reset(pStmt2); if( iLower>=0 ) printTreeLine(iLower, iPrev); } }else{ printf(" root only\n"); } } sqlite3_reset(pStmt); } sqlite3_finalize(pStmt); sqlite3_finalize(pStmt2); } static void usage(const char *argv0){ fprintf(stderr, "Usage: %s DATABASE\n" " or: %s DATABASE FTS3TABLE ARGS...\n", argv0, argv0); fprintf(stderr, "ARGS:\n" " schema FTS table schema\n" " segdir directory of segments\n" " segment-stats information about segment sizes\n" " stat content of the %%_stat table\n" " vocabulary --top N information on the document vocabulary\n" ); exit(1); } int main(int argc, char **argv){ sqlite3 *db; int rc; const char *zTab; const char *zCmd; if( argc<2 ) usage(argv[0]); rc = sqlite3_open(argv[1], &db); if( rc ){ fprintf(stderr, "Cannot open %s\n", argv[1]); exit(1); } if( argc==2 ){ sqlite3_stmt *pStmt; int cnt = 0; pStmt = prepare(db, "SELECT b.sql" " FROM sqlite_master a, sqlite_master b" " WHERE a.name GLOB '*_segdir'" " AND b.name=substr(a.name,1,length(a.name)-7)" " ORDER BY 1"); while( sqlite3_step(pStmt)==SQLITE_ROW ){ cnt++; printf("%s;\n", sqlite3_column_text(pStmt, 0)); } sqlite3_finalize(pStmt); if( cnt==0 ){ printf("/* No FTS3/4 tables found in database %s */\n", argv[1]); } return 0; } if( argc<4 ) usage(argv[0]); zTab = argv[2]; zCmd = argv[3]; nExtra = argc-4; azExtra = argv+4; if( strcmp(zCmd,"schema")==0 ){ showSchema(db, zTab); }else if( strcmp(zCmd,"segdir")==0 ){ showSegdirMap(db, zTab); }else if( strcmp(zCmd,"segment-stats")==0 ){ showSegmentStats(db, zTab); }else if( strcmp(zCmd,"stat")==0 ){ showStat(db, zTab); }else if( strcmp(zCmd,"vocabulary")==0 ){ showVocabulary(db, zTab); }else{ usage(argv[0]); } return 0; } |