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Add the "ALTER TABLE xxx RENAME TO yyy" command. (CVS 2092)

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FossilOrigin-Name: a1b2cc63e604785bd51e358ff72c485d858752e3
This commit is contained in:
danielk1977
2004-11-12 13:42:30 +00:00
parent 2958a4e6a5
commit 9fd2a9a028
9 changed files with 326 additions and 21 deletions
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48
src/func.c
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@@ -16,7 +16,7 @@
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: func.c,v 1.85 2004/10/06 15:41:17 drh Exp $
** $Id: func.c,v 1.86 2004/11/12 13:42:31 danielk1977 Exp $
*/
#include <ctype.h>
#include <math.h>
@@ -507,6 +507,49 @@ static void versionFunc(
sqlite3_result_text(context, sqlite3_version, -1, SQLITE_STATIC);
}
#ifndef SQLITE_OMIT_ALTERTABLE
/*
** This function is used by SQL generated to implement the
** ALTER TABLE command. The first argument is the text of a CREATE TABLE or
** CREATE INDEX command. The second is a table name. The table name in
** the CREATE TABLE or CREATE INDEX statement is replaced with the second
** argument and the result returned. Examples:
**
** sqlite_alter_table('CREATE TABLE abc(a, b, c)', 'def')
** -> 'CREATE TABLE def(a, b, c)'
**
** sqlite_alter_table('CREATE INDEX i ON abc(a)', 'def')
** -> 'CREATE INDEX i ON def(a, b, c)'
*/
static void altertableFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
char const *zSql = sqlite3_value_text(argv[0]);
char const *zTableName = sqlite3_value_text(argv[1]);
char const *zCsr = zSql;
char const *zPrev;
char *zRet = 0;
int tokenType = 0;
int len;
assert( argc==2 );
if( zSql ){
while( tokenType!=TK_LP ){
zPrev = zCsr-len;
len = sqlite3GetToken(zCsr, &tokenType);
zCsr += len;
}
zRet = sqlite3MPrintf("%.*s%Q(%s", zPrev-zSql, zSql, zTableName, zCsr);
sqlite3_result_text(context, zRet, -1, SQLITE_TRANSIENT);
sqliteFree(zRet);
}
}
#endif
/*
** EXPERIMENTAL - This is not an official function. The interface may
** change. This function may disappear. Do not write code that depends
@@ -952,6 +995,9 @@ void sqlite3RegisterBuiltinFunctions(sqlite3 *db){
{ "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 },
#ifndef SQLITE_OMIT_ALTERTABLE
{ "sqlite_alter_table", 2, 0, SQLITE_UTF8, 0, altertableFunc},
#endif
#ifdef SQLITE_SOUNDEX
{ "soundex", 1, 0, SQLITE_UTF8, 0, soundexFunc},
#endif