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Overview
| Comment: | Ensure that "PRAGMA case_sensitive_like" and "PRAGMA shrink_memory" set the number of output columns to 0 (as they are statements that return no data). |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
6696cd1878be4bd44a24841b04163e52 |
| User & Date: | dan 2017-01-06 13:49:40 |
Context
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2017-01-09
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| 06:33 | Upgrade this branch to 3.16 plus the various fixes that appeared after its release. check-in: d0e212d0 user: dan tags: begin-concurrent | |
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2017-01-07
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| 00:56 | Avoid duplicate b-tree searches in the duplicate row detector used to implement DISTINCT. check-in: d577dda0 user: drh tags: trunk | |
| 00:42 | This hack illustrates how to use the VDBE_PROFILE mechanism to show which bytecode operators are using resources other than time. In this case, the number of loops through the binary search code in sqlite3BtreeMovetoUnpacked() is measured, for the purpose of helping to identify unnecessary btree searches. check-in: 746b1836 user: drh tags: vdbe-aux-perf | |
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2017-01-06
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| 13:52 | Ensure that "PRAGMA case_sensitive_like" and "PRAGMA shrink_memory" set the number of output columns to 0 (as they are statements that return no data). check-in: 4a97ba4e user: dan tags: branch-3.16 | |
| 13:49 | Ensure that "PRAGMA case_sensitive_like" and "PRAGMA shrink_memory" set the number of output columns to 0 (as they are statements that return no data). check-in: 6696cd18 user: dan tags: trunk | |
| 11:55 | Improve handling of corrupt data in fts5. check-in: 609ac1c7 user: dan tags: trunk | |
Changes
Changes to src/pragma.h.
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/* ePragTyp: */ PragTyp_CACHE_SPILL,
/* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
#endif
{/* zName: */ "case_sensitive_like",
/* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE,
/* ePragFlg: */ 0,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
{/* zName: */ "cell_size_check",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ SQLITE_CellSizeCk },
................................................................................
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ SQLITE_ShortColNames },
#endif
{/* zName: */ "shrink_memory",
/* ePragTyp: */ PragTyp_SHRINK_MEMORY,
/* ePragFlg: */ 0,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
{/* zName: */ "soft_heap_limit",
/* ePragTyp: */ PragTyp_SOFT_HEAP_LIMIT,
/* ePragFlg: */ PragFlg_Result0,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
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/* ePragTyp: */ PragTyp_CACHE_SPILL,
/* ePragFlg: */ PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
#endif
{/* zName: */ "case_sensitive_like",
/* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE,
/* ePragFlg: */ PragFlg_NoColumns,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
{/* zName: */ "cell_size_check",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ SQLITE_CellSizeCk },
................................................................................
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlg: */ PragFlg_Result0|PragFlg_NoColumns1,
/* ColNames: */ 0, 0,
/* iArg: */ SQLITE_ShortColNames },
#endif
{/* zName: */ "shrink_memory",
/* ePragTyp: */ PragTyp_SHRINK_MEMORY,
/* ePragFlg: */ PragFlg_NoColumns,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
{/* zName: */ "soft_heap_limit",
/* ePragTyp: */ PragTyp_SOFT_HEAP_LIMIT,
/* ePragFlg: */ PragFlg_Result0,
/* ColNames: */ 0, 0,
/* iArg: */ 0 },
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Changes to test/pragma4.test.
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# Without RHS: do_pragma_ncol_test 1.$tn.1 [lindex [split $sql =] 0] 1 # With RHS: do_pragma_ncol_test 1.$tn.2 $sql 0 } finish_test |
> > > > > > > > > > > > > |
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# Without RHS: do_pragma_ncol_test 1.$tn.1 [lindex [split $sql =] 0] 1 # With RHS: do_pragma_ncol_test 1.$tn.2 $sql 0 } # These pragmas should never return any values. # foreach {tn sql} { 1 "PRAGMA shrink_memory" 2 "PRAGMA shrink_memory = 10" 3 "PRAGMA case_sensitive_like = 0" 4 "PRAGMA case_sensitive_like = 1" 5 "PRAGMA case_sensitive_like" } { do_pragma_ncol_test 1.$tn.1 $sql 0 } finish_test |
Changes to tool/mkpragmatab.tcl.
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COLS: table rowid parent fkid
IF: !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
NAME: parser_trace
IF: defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_PARSER_TRACE)
NAME: case_sensitive_like
NAME: integrity_check
FLAG: NeedSchema
IF: !defined(SQLITE_OMIT_INTEGRITY_CHECK)
NAME: quick_check
TYPE: INTEGRITY_CHECK
................................................................................
COLS: busy log checkpointed
IF: !defined(SQLITE_OMIT_WAL)
NAME: wal_autocheckpoint
IF: !defined(SQLITE_OMIT_WAL)
NAME: shrink_memory
NAME: busy_timeout
FLAG: Result0
COLS: timeout
NAME: lock_status
FLAG: Result0
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COLS: table rowid parent fkid IF: !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) NAME: parser_trace IF: defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_PARSER_TRACE) NAME: case_sensitive_like FLAG: NoColumns NAME: integrity_check FLAG: NeedSchema IF: !defined(SQLITE_OMIT_INTEGRITY_CHECK) NAME: quick_check TYPE: INTEGRITY_CHECK ................................................................................ COLS: busy log checkpointed IF: !defined(SQLITE_OMIT_WAL) NAME: wal_autocheckpoint IF: !defined(SQLITE_OMIT_WAL) NAME: shrink_memory FLAG: NoColumns NAME: busy_timeout FLAG: Result0 COLS: timeout NAME: lock_status FLAG: Result0 |