Lines Matching defs:Schema
531 #define SQLITE_SCHEMA 17 /* The database schema changed */
2599 ** schema change. Hence, the application should ensure that the
2606 ** sqlite3_prepare_v2() to reprepare a statement after a schema change.
3263 ** ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
3282 ** a schema change, on the first [sqlite3_step()] call following any change
3712 ** ^(For example, given the database schema:
5078 ** and schema data structures between [database connection | connections]
5649 ** CAPI3REF: Declare The Schema Of A Virtual Table
6480 ** memory used to store the schema for all databases associated
6483 ** schema memory is shared with other database connections due to
8707 ** The name of the schema table.
8787 typedef struct Schema Schema;
9070 SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*);
10323 Schema *pSchema; /* Pointer to database schema (possibly shared) */
10327 ** An instance of the following structure stores a database schema.
10329 ** Most Schema objects are associated with a Btree. The exception is
10330 ** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing.
10331 ** In shared cache mode, a single Schema object can be shared by multiple
10334 ** Schema objects are automatically deallocated when the last Btree that
10335 ** references them is destroyed. The TEMP Schema is manually freed by
10339 ** to access Schema content. This implies that the thread must also be
10341 ** For a TEMP Schema, only the connection mutex is required.
10343 struct Schema {
10344 int schema_cookie; /* Database schema version number for this file */
10351 Schema format version for this file */
10353 u16 schemaFlags; /* Flags associated with this schema */
10369 ** The DB_SchemaLoaded flag is set after the database schema has been
10373 ** have been filled out. If the schema changes, these column names might
10376 #define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
10400 ** with a particular database connection. Hence, schema information cannot
10401 ** be stored in lookaside because in shared cache mode the schema information
10403 ** schema information, the Lookaside.bEnabled flag is cleared so that
10404 ** lookaside allocations are not used to construct the schema objects.
10571 #define SQLITE_RecoveryMode 0x00010000 /* Ignore schema errors */
10858 ** the database schema.
10860 ** If the database schema is shared, then there is one instance of this
10862 ** schema. This is because each database connection requires its own unique
10866 ** schema is shared, as the implementation often stores the database
10875 ** database schema are initially stored in a linked-list pointed to by
10883 ** schema is being reloaded for some reason), the VTable objects are not
10968 Schema *pSchema; /* Schema that contains this table */
11025 ** is held in Schema.fkeyHash with a hash key of Z.
11164 Schema *pSchema; /* Schema containing this index */
11336 ** Expr objects can use a lot of memory space in database schema. To
11564 Schema *pSchema; /* Schema to which this item is fixed */
11913 u8 checkSchema; /* Causes schema cookie check after an error */
11947 yDbMask cookieMask; /* Bitmask of schema verified databases */
11998 Token sNameToken; /* Token with unqualified schema object name */
12043 * Each trigger present in the database schema is stored as an instance of
12065 Schema *pSchema; /* Schema containing the trigger */
12066 Schema *pTabSchema; /* Schema containing the table */
12140 Schema *pSchema; /* Fix items to this schema */
12737 SQLITE_PRIVATE void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
12897 SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
12898 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
14489 ** to store the schema for all databases (main, temp, and any ATTACHed
14499 Schema *pSchema = db->aDb[i].pSchema;
50668 ** 40 4 Schema cookie
50669 ** 44 4 File format of schema layer
50931 ** schema associated with the database file are all contained within
51491 ** db->aDb[iDb].pSchema structure. The mutexes required for schema
51500 SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){
51622 ** Enable or disable the shared pager and schema features.
51673 ** function has to search through the database schema.
51676 ** hold a write-lock on the schema table (root page 1). This is also
51685 Schema *pSchema = (Schema *)pBtree->pBt->pSchema;
51699 /* If the client is reading or writing an index and the schema is
51725 ** write-lock on the schema table, or (if the client is reading) a
54172 ** consisting of a single page and no schema objects). Return SQLITE_OK
59152 ** The schema layer numbers meta values differently. At the schema
59886 ** purposes (for example, to store a high-level schema associated with
60094 u32 iDestSchema; /* Original schema cookie in destination */
60484 /* Update the schema version field in the destination database. This
60485 ** is to make sure that the schema-version really does change in
60487 ** same schema version.
66615 ** schema change has occurred. That detail is handled by the
66744 ** sqlite3Step() to do most of the work. If a schema error occurs,
67304 ** as if there had been a schema change, on the first sqlite3_step() call
68498 u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
71028 ** If P5!=0 then this opcode also checks the schema cookie against P3
71029 ** and the schema generation counter against P4.
71030 ** The cookie changes its value whenever the database schema changes.
71032 ** and that the current process needs to reread the schema. If the schema
71033 ** cookie in P3 differs from the schema cookie in the database header or
71034 ** if the schema generation counter in P4 differs from the current
71087 /* Gather the schema version number for checking */
71096 p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
71097 /* If the schema-cookie from the database file matches the cookie
71098 ** stored with the in-memory representation of the schema, do
71099 ** not reload the schema from the database file.
71105 ** discard the database schema, as the user code implementing the
71122 ** P3==1 is the schema version. P3==2 is the database format.
71152 ** into cookie number P2 of database P1. P2==1 is the schema version.
71173 /* When the schema cookie changes, record the new cookie internally */
71182 ** schema is changed. Ticket #1644 */
73160 ** schema consistent with what is on disk.
73173 ** schema consistent with what is on disk.
73186 ** schema consistent with what is on disk.
76995 Schema *pSchema = 0; /* Schema of the expression */
77009 /* Translate the schema name in zDb into a pointer to the corresponding
77010 ** schema. If not found, pSchema will remain NULL and nothing will match
79172 ** part of the in-memory representation of the database schema.
80307 ** of a "NOT NULL" constraint in the database schema.
82882 const Schema *pTempSchema = pParse->db->aDb[1].pSchema; /* Temp db schema */
82886 ** that is not part of the temp-db schema, add a clause to the WHERE
82908 ** Argument zName is the name of the table in the database schema at
82928 /* Drop any table triggers from the internal schema. */
82936 /* Drop the table and index from the internal schema. */
83054 ** Then modify the schema cookie (since the ALTER TABLE modifies the
83055 ** schema). Open a statement transaction if the table is a virtual
83161 /* Drop and reload the internal table schema. */
83310 /* Reload the schema of the modified table. */
83398 /* Begin a transaction and increment the schema cookie. */
84698 Schema *pSchema = db->aDb[iDb].pSchema; /* Schema of database iDb */
84764 /* Read the database schema. If an error occurs, leave an error message
85372 /* Allocate the new entry in the db->aDb[] array and initialize the schema
85388 ** it to obtain the database schema. At this point the schema may
85464 /* If the file was opened successfully, read the schema for the new database.
85977 Schema *pSchema, /* The schema of the expression */
86253 ** transaction on each used database and to verify the schema cookie
86383 /* All mutexes are required for schema access. Make sure we hold them. */
86413 /* Read the database schema. If an error occurs, leave an error message
86437 ** the search to schema (p->pSchema) if it is not NULL. p->pSchema may be
86473 /* All mutexes are required for schema access. Make sure we hold them. */
86477 Schema *pSchema = db->aDb[j].pSchema;
86566 ** Reset the schema for the database at index iDb. Also reset the
86567 ** TEMP schema.
86573 /* Case 1: Reset the single schema identified by iDb */
86592 ** Erase all schema information from all attached databases (including
86647 ** contains lookaside memory. (Table objects in the schema do not use
86654 TESTONLY( int nLookaside; ) /* Used to verify lookaside not used for schema */
86662 /* Record the number of outstanding lookaside allocations in schema Tables
86663 ** prior to doing any free() operations. Since schema Tables do not use
86700 /* Verify that no lookaside memory was used by schema tables */
86845 ** unqualified name for a new schema object (table, index, view or
87501 ** Generate code that will increment the schema cookie.
87503 ** The schema cookie is used to determine when the schema for the
87504 ** database changes. After each schema change, the cookie value
87505 ** changes. When a process first reads the schema it records the
87507 ** it checks the cookie to make sure the schema has not changed
87511 ** the schema to change multiple times and for the cookie to be
87512 ** set back to prior value. But schema changes are infrequent
87711 ** internal schema data structures and the generated VDBE code so that they
87722 ** schema to the rootpage from the main table.
87723 ** (4) Set all columns of the PRIMARY KEY schema object to be NOT NULL.
87955 ** as a schema-lock must have already been obtained to create it. Since
87956 ** a schema-lock excludes all other database users, the write-lock would
88039 Schema *pSchema = p->pSchema;
88261 ** This function is called by the VDBE to adjust the internal schema
88304 ** Also write code to modify the sqlite_master table and internal schema
88332 ** Code to update the sqlite_master tables and internal schema definitions
88473 /* Remove the table entry from SQLite's internal schema and modify
88474 ** the schema cookie.
88930 ** if initialising a database schema.
88990 ** sqlite_master table (because some other process changed the schema) and
89258 ** table to parse the schema, or if this index is the PRIMARY KEY index
89307 /* Fill the index with data and reparse the schema. Code an OP_Expire
89943 ** Record the fact that the schema cookie will need to be verified
89944 ** for database iDb. The code to actually verify the schema cookie
90157 assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */
90192 /* Read the database schema. If an error occurs, leave an error message
90774 ** Free all resources held by the schema structure. The void* argument points
90775 ** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the
90777 ** of the schema hash tables).
90779 ** The Schema.cache_size variable is not cleared.
90785 Schema *pSchema = (Schema *)p;
90810 ** Find and return the schema associated with a BTree. Create
90813 SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
90814 Schema * p;
90816 p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear);
90818 p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema));
93567 ** search the schema for a unique index on the parent key columns.
94070 ** given the following schema:
94150 ** any modifications to the schema are made. This is because statement
94151 ** transactions are not able to rollback schema changes.
94297 ** schema items cannot be located, set an error in pParse and return
94514 ** the following schema:
94744 ** table pTab. Remove the deleted foreign keys from the Schema.fkeyHash
98786 ** If the TEMP database is open, close it and mark the database schema
99002 /* Make sure the database schema is loaded if the pragma requires that */
99847 HashElem *k; /* Loop counter: Next table in schema */
100264 ** will be overwritten when the schema is next loaded. If it does not
100300 ** the value of the schema-version and user-version, respectively. Both
100301 ** the schema-version and the user-version are 32-bit signed integers
100304 ** The schema-cookie is usually only manipulated internally by SQLite. It
100305 ** is incremented by SQLite whenever the database schema is modified (by
100306 ** creating or dropping a table or index). The schema version is used by
100308 ** of the schema used when compiling the SQL query matches the schema of
100311 ** the schema-version is potentially dangerous and may lead to program
100318 int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */
100576 ** interface, and routines that contribute to loading the database schema
100593 "malformed database schema (%s)", zObj);
100689 ** Attempt to read the database schema and initialize internal
100742 /* zMasterSchema and zInitScript are set to point at the master schema
100753 /* Construct the schema tables. */
100798 ** meta[0] Schema cookie. Changes with each schema change.
100799 ** meta[1] File format of schema layer.
100883 /* Read the schema information out of the schema tables
100916 ** the schema loaded, even if errors occurred. In this situation the
100919 ** of the schema was loaded before the error occurred. The primary
100969 /* Once all the other databases have been initialized, load the schema
100971 ** schema may contain references to objects in other databases.
100992 ** This routine is a no-op if the database schema is already initialized.
100993 ** Otherwise, the schema is loaded. An error code is returned.
101011 ** Check schema cookies in all databases. If any cookie is out
101012 ** of date set pParse->rc to SQLITE_SCHEMA. If all schema cookies
101040 /* Read the schema cookie from the database. If it does not match the
101041 ** value stored as part of the in-memory schema representation,
101058 ** Convert a schema pointer into the iDb index that indicates
101059 ** which database file in db->aDb[] the schema refers to.
101064 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
101132 ** to the schema.
101135 ** schema changes and if those schema changes are subsequently rolled
101137 ** prepared statement goes to run the schema cookie would fail to detect
101138 ** the schema change. Disaster would follow.
101142 ** is not possible for another thread to start a new schema change
101144 ** locks on the schema, we just need to make sure nobody else is
101148 ** but it does *not* override schema lock detection, so this all still
101158 sqlite3Error(db, rc, "database schema is locked: %s", zDb);
101292 ** Rerun the compilation of a statement after a schema change.
101331 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
101333 ** and the statement is automatically recompiled if an schema change
101417 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
101419 ** and the statement is automatically recompiled if an schema change
102877 ** column specific strings, in case the schema is reset before this
107097 ** triggers on pTab in the TEMP schema. This routine prepends all
107106 Schema * const pTmpSchema = pParse->db->aDb[1].pSchema;
107538 ** This function is called to drop a trigger from the database schema.
108110 /* Sanity checking: The schema for the trigger and for the table are
108111 ** always defined. The trigger must be in the same schema as the table
109099 ** restored before returning. Then set the writable-schema
109142 ** to read the schema was concluded. Unlock it here so that this doesn't
109190 /* Query the schema of the main database. Create a mirror schema
109263 ** The increment is used to increase the schema cookie so that other
109264 ** connections to the same database will know to reread the schema.
109267 BTREE_SCHEMA_VERSION, 1, /* Add one to the old schema cookie */
109520 ** objects without disturbing the rest of the Schema object (which may
109585 ** structure is associated with a single sqlite3* user of the schema.
109752 ** allows a schema that contains virtual tables to be loaded before
109756 Schema *pSchema = pTab->pSchema;
109856 const char *zFormat = "vtable constructor did not declare schema: %s";
110020 ** This function is used to set the schema of a virtual table. It is only
122956 Schema *pSchema = db->aDb[i].pSchema;
123080 ** the pager rollback and schema reset an atomic operation. */
123097 /* Clear the TEMP schema separately and last */
123153 /* The temp-database schema is allocated differently from the other schema
123155 ** So it needs to be freed here. Todo: Why not roll the temp schema into
123184 ** modified the database schema. If the b-tree mutexes are not taken
123186 ** the database rollback and schema reset, which can cause false
123351 /* SQLITE_SCHEMA */ "database schema has changed",
124740 ** database schema yet. This is delayed until the first time the database
125085 /* Ensure the database schema has been loaded */
127391 ** Invoke sqlite3_declare_vtab() to declare the schema for the FTS3 table
128256 /* Declare the table schema to SQLite. */
132681 ** Schema of the terms table.
135957 ** comment above struct HashTableVtab) to the database schema. Both
136264 ** The table created has the following schema:
136387 ** Schema of the tokenizer table.
142185 ** tables. The schema of the virtual table being:
147847 /* Create/Connect to the underlying relational database schema. If
147849 ** the r-tree table schema.
