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Overview
| Comment: | Add built-in functions numeric(), text(), and blob() that coerce types. Ticket #1287. (CVS 2524) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | affb0fa2e8c5ff497838ba3c2994cdb1 |
| User & Date: | drh 2005-06-22 10:53:59 |
Context
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2005-06-23
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| 03:15 | Make sure the String8 opcode always has a non-null P3 argument in the foreign_key_list pragma. Ticket #1297. (CVS 2525) check-in: bcf62dc7 user: drh tags: trunk | |
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2005-06-22
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| 10:53 | Add built-in functions numeric(), text(), and blob() that coerce types. Ticket #1287. (CVS 2524) check-in: affb0fa2 user: drh tags: trunk | |
| 08:48 | Allow parameters to be introduced by characters ':', '$' and '#'. This is an experimental change. (CVS 2523) check-in: f3427a13 user: drh tags: trunk | |
Changes
Changes to src/func.c.
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** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.98 2005/05/24 12:01:02 danielk1977 Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include <math.h> #include <stdlib.h> #include <assert.h> #include "vdbeInt.h" ................................................................................ case SQLITE_INTEGER: z = "integer"; break; case SQLITE_TEXT: z = "text"; break; case SQLITE_FLOAT: z = "real"; break; case SQLITE_BLOB: z = "blob"; break; } sqlite3_result_text(context, z, -1, SQLITE_STATIC); } /* ** Implementation of the length() function */ static void lengthFunc( sqlite3_context *context, int argc, ................................................................................ { "glob", 2, 0, SQLITE_UTF8, 0, globFunc }, { "nullif", 2, 0, SQLITE_UTF8, 1, nullifFunc }, { "sqlite_version", 0, 0, SQLITE_UTF8, 0, versionFunc}, { "quote", 1, 0, SQLITE_UTF8, 0, quoteFunc }, { "last_insert_rowid", 0, 1, SQLITE_UTF8, 0, last_insert_rowid }, { "changes", 0, 1, SQLITE_UTF8, 0, changes }, { "total_changes", 0, 1, SQLITE_UTF8, 0, total_changes }, #ifdef SQLITE_SOUNDEX { "soundex", 1, 0, SQLITE_UTF8, 0, soundexFunc}, #endif #ifdef SQLITE_TEST { "randstr", 2, 0, SQLITE_UTF8, 0, randStr }, { "test_destructor", 1, 1, SQLITE_UTF8, 0, test_destructor}, { "test_destructor_count", 0, 0, SQLITE_UTF8, 0, test_destructor_count}, |
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** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.99 2005/06/22 10:53:59 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include <math.h> #include <stdlib.h> #include <assert.h> #include "vdbeInt.h" ................................................................................ case SQLITE_INTEGER: z = "integer"; break; case SQLITE_TEXT: z = "text"; break; case SQLITE_FLOAT: z = "real"; break; case SQLITE_BLOB: z = "blob"; break; } sqlite3_result_text(context, z, -1, SQLITE_STATIC); } /* ** Convert the argument to a numeric type. */ static void numericFunc( sqlite3_context *context, int argc, sqlite3_value **argv ){ const char *z = 0; switch( sqlite3_value_type(argv[0]) ){ case SQLITE_NULL: { sqlite3_result_int(context, 0); break; } case SQLITE_INTEGER: case SQLITE_FLOAT: { sqlite3_result_value(context, argv[0]); break; } case SQLITE_TEXT: case SQLITE_BLOB: { z = sqlite3_value_text(argv[0]); while( *z && *z!='.' ){ z++; } if( *z ){ sqlite3_result_double(context, sqlite3_value_double(argv[0])); }else{ sqlite3_result_int64(context, sqlite3_value_int64(argv[0])); } break; } } } /* ** Convert the argument to TEXT */ static void textFunc( sqlite3_context *context, int argc, sqlite3_value **argv ){ switch( sqlite3_value_type(argv[0]) ){ case SQLITE_NULL: { sqlite3_result_text(context, "", 0, SQLITE_STATIC); break; } case SQLITE_BLOB: case SQLITE_INTEGER: case SQLITE_FLOAT: { sqlite3_result_text(context, sqlite3_value_text(argv[0]), sqlite3_value_bytes(argv[0]), SQLITE_TRANSIENT); break; } case SQLITE_TEXT: { sqlite3_result_value(context, argv[0]); break; } } } /* ** Convert the argument to TEXT */ static void blobFunc( sqlite3_context *context, int argc, sqlite3_value **argv ){ switch( sqlite3_value_type(argv[0]) ){ case SQLITE_NULL: { sqlite3_result_blob(context, "", 0, SQLITE_STATIC); break; } case SQLITE_TEXT: case SQLITE_INTEGER: case SQLITE_FLOAT: { sqlite3_result_blob(context, sqlite3_value_text(argv[0]), sqlite3_value_bytes(argv[0]), SQLITE_TRANSIENT); break; } case SQLITE_BLOB: { sqlite3_result_value(context, argv[0]); break; } } } /* ** Implementation of the length() function */ static void lengthFunc( sqlite3_context *context, int argc, ................................................................................ { "glob", 2, 0, SQLITE_UTF8, 0, globFunc }, { "nullif", 2, 0, SQLITE_UTF8, 1, nullifFunc }, { "sqlite_version", 0, 0, SQLITE_UTF8, 0, versionFunc}, { "quote", 1, 0, SQLITE_UTF8, 0, quoteFunc }, { "last_insert_rowid", 0, 1, SQLITE_UTF8, 0, last_insert_rowid }, { "changes", 0, 1, SQLITE_UTF8, 0, changes }, { "total_changes", 0, 1, SQLITE_UTF8, 0, total_changes }, { "text", 1, 0, SQLITE_UTF8, 0, textFunc }, { "numeric", 1, 0, SQLITE_UTF8, 0, numericFunc }, { "blob", 1, 0, SQLITE_UTF8, 0, blobFunc }, #ifdef SQLITE_SOUNDEX { "soundex", 1, 0, SQLITE_UTF8, 0, soundexFunc}, #endif #ifdef SQLITE_TEST { "randstr", 2, 0, SQLITE_UTF8, 0, randStr }, { "test_destructor", 1, 1, SQLITE_UTF8, 0, test_destructor}, { "test_destructor_count", 0, 0, SQLITE_UTF8, 0, test_destructor_count}, |
Changes to src/vdbeapi.c.
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*/
void sqlite3_result_blob(
sqlite3_context *pCtx,
const void *z,
int n,
void (*xDel)(void *)
){
assert( n>0 );
sqlite3VdbeMemSetStr(&pCtx->s, z, n, 0, xDel);
}
void sqlite3_result_double(sqlite3_context *pCtx, double rVal){
sqlite3VdbeMemSetDouble(&pCtx->s, rVal);
}
void sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){
pCtx->isError = 1;
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*/
void sqlite3_result_blob(
sqlite3_context *pCtx,
const void *z,
int n,
void (*xDel)(void *)
){
assert( n>=0 );
sqlite3VdbeMemSetStr(&pCtx->s, z, n, 0, xDel);
}
void sqlite3_result_double(sqlite3_context *pCtx, double rVal){
sqlite3VdbeMemSetDouble(&pCtx->s, rVal);
}
void sqlite3_result_error(sqlite3_context *pCtx, const char *z, int n){
pCtx->isError = 1;
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Changes to test/func.test.
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# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing built-in functions. # # $Id: func.test,v 1.34 2005/03/29 03:11:00 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Create a table to work with. # do_test func-0.0 { ................................................................................ sqlite3_step $::STMT sqlite3_finalize $::STMT execsql { SELECT quote(a), quote(b) FROM tbl2; } } {X'616263' NULL} finish_test |
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# May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is testing built-in functions. # # $Id: func.test,v 1.35 2005/06/22 10:53:59 drh Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl # Create a table to work with. # do_test func-0.0 { ................................................................................ sqlite3_step $::STMT sqlite3_finalize $::STMT execsql { SELECT quote(a), quote(b) FROM tbl2; } } {X'616263' NULL} # Tests for the blob(), text() and numeric() built-ins # do_test func-17.1 { execsql {SELECT x'616263'} } abc do_test func-17.2 { execsql {SELECT typeof(x'616263')} } blob do_test func-17.3 { execsql {SELECT text(x'616263')} } abc do_test func-17.4 { execsql {SELECT typeof(text(x'616263'))} } text do_test func-17.5 { execsql {SELECT numeric(x'616263')} } 0 do_test func-17.6 { execsql {SELECT typeof(numeric(x'616263'))} } integer do_test func-17.7 { execsql {SELECT blob(x'616263')} } abc do_test func-17.8 { execsql {SELECT typeof(blob(x'616263'))} } blob do_test func-17.11 { execsql {SELECT null} } {{}} do_test func-17.12 { execsql {SELECT typeof(NULL)} } null do_test func-17.13 { execsql {SELECT text(NULL)} } {{}} do_test func-17.14 { execsql {SELECT typeof(text(NULL))} } text do_test func-17.15 { execsql {SELECT numeric(NULL)} } 0 do_test func-17.16 { execsql {SELECT typeof(numeric(NULL))} } integer do_test func-17.17 { execsql {SELECT blob(NULL)} } {{}} do_test func-17.18 { execsql {SELECT typeof(blob(NULL))} } blob do_test func-17.21 { execsql {SELECT 123} } {123} do_test func-17.22 { execsql {SELECT typeof(123)} } integer do_test func-17.23 { execsql {SELECT text(123)} } {123} do_test func-17.24 { execsql {SELECT typeof(text(123))} } text do_test func-17.25 { execsql {SELECT numeric(123)} } 123 do_test func-17.26 { execsql {SELECT typeof(numeric(123))} } integer do_test func-17.27 { execsql {SELECT blob(123)} } {123} do_test func-17.28 { execsql {SELECT typeof(blob(123))} } blob do_test func-17.31 { execsql {SELECT 123.456} } {123.456} do_test func-17.32 { execsql {SELECT typeof(123.456)} } real do_test func-17.33 { execsql {SELECT text(123.456)} } {123.456} do_test func-17.34 { execsql {SELECT typeof(text(123.456))} } text do_test func-17.35 { execsql {SELECT numeric(123.456)} } 123.456 do_test func-17.36 { execsql {SELECT typeof(numeric(123.456))} } real do_test func-17.37 { execsql {SELECT blob(123.456)} } {123.456} do_test func-17.38 { execsql {SELECT typeof(blob(123.456))} } blob do_test func-17.41 { execsql {SELECT '123abc'} } {123abc} do_test func-17.42 { execsql {SELECT typeof('123abc')} } text do_test func-17.43 { execsql {SELECT text('123abc')} } {123abc} do_test func-17.44 { execsql {SELECT typeof(text('123abc'))} } text do_test func-17.45 { execsql {SELECT numeric('123abc')} } 123 do_test func-17.46 { execsql {SELECT typeof(numeric('123abc'))} } integer do_test func-17.47 { execsql {SELECT blob('123abc')} } {123abc} do_test func-17.48 { execsql {SELECT typeof(blob('123abc'))} } blob do_test func-17.49 { execsql {SELECT numeric('123.5abc')} } 123.5 do_test func-17.49b { execsql {SELECT typeof(numeric('123.5abc'))} } real finish_test |