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Overview
| Comment: | Fix header comments and remove an unnecessary version restriction from the carray() table-valued function implementation. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 021d0fb8d85e44839d2b4fdb90b15f0e |
| User & Date: | drh 2016-07-13 00:55:28 |
Context
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2016-07-13
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| 13:05 | Fix harmless compiler warnings in shell.c for NetBSD. check-in: 824b39e5 user: drh tags: trunk | |
| 00:55 | Fix header comments and remove an unnecessary version restriction from the carray() table-valued function implementation. check-in: 021d0fb8 user: drh tags: trunk | |
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2016-07-12
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| 19:54 | Fix the error counter reset in Lemon generated parsers. This has no effect on SQLite. check-in: 3ef93950 user: drh tags: trunk | |
Changes
Changes to ext/misc/carray.c.
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** ************************************************************************* ** ** This file demonstrates how to create a table-valued-function that ** returns the values in a C-language array. ** Examples: ** ** SELECT * FROM array($ptr,5) ** ** The query above returns 5 integers contained in a C-language array ** at the address $ptr. $ptr is a pointer to the array of integers that ** has been cast to an integer. ** ** There is an optional third parameter to determine the datatype of ** the C-language array. Allowed values of the third parameter are ** 'int32', 'int64', 'double', 'char*'. Example: ** ** SELECT * FROM array($ptr,10,'char*'); ** ** HOW IT WORKS ** ** The carray "function" is really a virtual table with the ** following schema: ** ** CREATE TABLE carray( ................................................................................ sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi ){ int rc = SQLITE_OK; SQLITE_EXTENSION_INIT2(pApi); #ifndef SQLITE_OMIT_VIRTUALTABLE if( sqlite3_libversion_number()<3008012 ){ *pzErrMsg = sqlite3_mprintf( "carray() requires SQLite 3.8.12 or later"); return SQLITE_ERROR; } rc = sqlite3_create_module(db, "carray", &carrayModule, 0); #endif return rc; } |
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** ************************************************************************* ** ** This file demonstrates how to create a table-valued-function that ** returns the values in a C-language array. ** Examples: ** ** SELECT * FROM carray($ptr,5) ** ** The query above returns 5 integers contained in a C-language array ** at the address $ptr. $ptr is a pointer to the array of integers that ** has been cast to an integer. ** ** There is an optional third parameter to determine the datatype of ** the C-language array. Allowed values of the third parameter are ** 'int32', 'int64', 'double', 'char*'. Example: ** ** SELECT * FROM carray($ptr,10,'char*'); ** ** HOW IT WORKS ** ** The carray "function" is really a virtual table with the ** following schema: ** ** CREATE TABLE carray( ................................................................................ sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi ){ int rc = SQLITE_OK; SQLITE_EXTENSION_INIT2(pApi); #ifndef SQLITE_OMIT_VIRTUALTABLE rc = sqlite3_create_module(db, "carray", &carrayModule, 0); #endif return rc; } |