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Overview
Comment: | Change the "PRAGMA stats" command to report size values in LogEst units. The eliminates the need for sqlite3LogEstToInt() unless non-standard compile-time options are used, so leave it out except in those cases. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
832c237fcbe83dd4f5a18a06acb0aeb7 |
User & Date: | drh 2016-02-25 21:19:03.487 |
Context
2016-02-25
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21:27 | Change the srcck1.c utility program to use only unsigned characters. (check-in: d64d005eb5 user: drh tags: trunk) | |
21:19 | Change the "PRAGMA stats" command to report size values in LogEst units. The eliminates the need for sqlite3LogEstToInt() unless non-standard compile-time options are used, so leave it out except in those cases. (check-in: 832c237fcb user: drh tags: trunk) | |
20:17 | Disable the RESTRICT foreign key action if "PRAGMA defer_foreign_keys" is set. (check-in: 9ffff484bb user: dan tags: trunk) | |
Changes
Changes to src/pragma.c.
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1098 1099 1100 1101 1102 1103 1104 | sqlite3CodeVerifySchema(pParse, iDb); setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) ); for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); sqlite3VdbeMultiLoad(v, 1, "ssii", pTab->zName, 0, | | | | | | 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 | sqlite3CodeVerifySchema(pParse, iDb); setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) ); for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); sqlite3VdbeMultiLoad(v, 1, "ssii", pTab->zName, 0, pTab->szTabRow, pTab->nRowLogEst); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ sqlite3VdbeMultiLoad(v, 2, "sii", pIdx->zName, pIdx->szIdxRow, pIdx->aiRowLogEst[0]); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); } } } break; case PragTyp_INDEX_INFO: if( zRight ){ |
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Changes to src/sqliteInt.h.
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3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 | int sqlite3Utf8CharLen(const char *pData, int nByte); u32 sqlite3Utf8Read(const u8**); LogEst sqlite3LogEst(u64); LogEst sqlite3LogEstAdd(LogEst,LogEst); #ifndef SQLITE_OMIT_VIRTUALTABLE LogEst sqlite3LogEstFromDouble(double); #endif u64 sqlite3LogEstToInt(LogEst); /* ** Routines to read and write variable-length integers. These used to ** be defined locally, but now we use the varint routines in the util.c ** file. */ int sqlite3PutVarint(unsigned char*, u64); | > > > > | 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 | int sqlite3Utf8CharLen(const char *pData, int nByte); u32 sqlite3Utf8Read(const u8**); LogEst sqlite3LogEst(u64); LogEst sqlite3LogEstAdd(LogEst,LogEst); #ifndef SQLITE_OMIT_VIRTUALTABLE LogEst sqlite3LogEstFromDouble(double); #endif #if defined(SQLITE_ENABLE_STMT_SCANSTAT) || \ defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) u64 sqlite3LogEstToInt(LogEst); #endif /* ** Routines to read and write variable-length integers. These used to ** be defined locally, but now we use the varint routines in the util.c ** file. */ int sqlite3PutVarint(unsigned char*, u64); |
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Changes to src/util.c.
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1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 | if( x<=2000000000 ) return sqlite3LogEst((u64)x); memcpy(&a, &x, 8); e = (a>>52) - 1022; return e*10; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ /* ** Convert a LogEst into an integer. */ u64 sqlite3LogEstToInt(LogEst x){ u64 n; if( x<10 ) return 1; n = x%10; x /= 10; if( n>=5 ) n -= 2; else if( n>=1 ) n -= 1; if( x>=3 ){ return x>60 ? (u64)LARGEST_INT64 : (n+8)<<(x-3); } return (n+8)>>(3-x); } | > > > > > > > | 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 | if( x<=2000000000 ) return sqlite3LogEst((u64)x); memcpy(&a, &x, 8); e = (a>>52) - 1022; return e*10; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ #if defined(SQLITE_ENABLE_STMT_SCANSTAT) || \ defined(SQLITE_ENABLE_STAT3_OR_STAT4) || \ defined(SQLITE_EXPLAIN_ESTIMATED_ROWS) /* ** Convert a LogEst into an integer. ** ** Note that this routine is only used when one or more of various ** non-standard compile-time options is enabled. */ u64 sqlite3LogEstToInt(LogEst x){ u64 n; if( x<10 ) return 1; n = x%10; x /= 10; if( n>=5 ) n -= 2; else if( n>=1 ) n -= 1; if( x>=3 ){ return x>60 ? (u64)LARGEST_INT64 : (n+8)<<(x-3); } return (n+8)>>(3-x); } #endif /* defined SCANSTAT or STAT4 or ESTIMATED_ROWS */ |