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;
50688 ** 40 4 Schema cookie
50689 ** 44 4 File format of schema layer
50951 ** schema associated with the database file are all contained within
51511 ** db->aDb[iDb].pSchema structure. The mutexes required for schema
51520 SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){
51642 ** Enable or disable the shared pager and schema features.
51693 ** function has to search through the database schema.
51696 ** hold a write-lock on the schema table (root page 1). This is also
51705 Schema *pSchema = (Schema *)pBtree->pBt->pSchema;
51719 /* If the client is reading or writing an index and the schema is
51745 ** write-lock on the schema table, or (if the client is reading) a
54192 ** consisting of a single page and no schema objects). Return SQLITE_OK
59172 ** The schema layer numbers meta values differently. At the schema
59906 ** purposes (for example, to store a high-level schema associated with
60114 u32 iDestSchema; /* Original schema cookie in destination */
60504 /* Update the schema version field in the destination database. This
60505 ** is to make sure that the schema-version really does change in
60507 ** same schema version.
66635 ** schema change has occurred. That detail is handled by the
66764 ** sqlite3Step() to do most of the work. If a schema error occurs,
67324 ** as if there had been a schema change, on the first sqlite3_step() call
68518 u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
71048 ** If P5!=0 then this opcode also checks the schema cookie against P3
71049 ** and the schema generation counter against P4.
71050 ** The cookie changes its value whenever the database schema changes.
71052 ** and that the current process needs to reread the schema. If the schema
71053 ** cookie in P3 differs from the schema cookie in the database header or
71054 ** if the schema generation counter in P4 differs from the current
71107 /* Gather the schema version number for checking */
71116 p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
71117 /* If the schema-cookie from the database file matches the cookie
71118 ** stored with the in-memory representation of the schema, do
71119 ** not reload the schema from the database file.
71125 ** discard the database schema, as the user code implementing the
71142 ** P3==1 is the schema version. P3==2 is the database format.
71172 ** into cookie number P2 of database P1. P2==1 is the schema version.
71193 /* When the schema cookie changes, record the new cookie internally */
71202 ** schema is changed. Ticket #1644 */
73180 ** schema consistent with what is on disk.
73193 ** schema consistent with what is on disk.
73206 ** schema consistent with what is on disk.
77015 Schema *pSchema = 0; /* Schema of the expression */
77029 /* Translate the schema name in zDb into a pointer to the corresponding
77030 ** schema. If not found, pSchema will remain NULL and nothing will match
79192 ** part of the in-memory representation of the database schema.
80327 ** of a "NOT NULL" constraint in the database schema.
82902 const Schema *pTempSchema = pParse->db->aDb[1].pSchema; /* Temp db schema */
82906 ** that is not part of the temp-db schema, add a clause to the WHERE
82928 ** Argument zName is the name of the table in the database schema at
82948 /* Drop any table triggers from the internal schema. */
82956 /* Drop the table and index from the internal schema. */
83074 ** Then modify the schema cookie (since the ALTER TABLE modifies the
83075 ** schema). Open a statement transaction if the table is a virtual
83181 /* Drop and reload the internal table schema. */
83330 /* Reload the schema of the modified table. */
83418 /* Begin a transaction and increment the schema cookie. */
84718 Schema *pSchema = db->aDb[iDb].pSchema; /* Schema of database iDb */
84784 /* Read the database schema. If an error occurs, leave an error message
85392 /* Allocate the new entry in the db->aDb[] array and initialize the schema
85408 ** it to obtain the database schema. At this point the schema may
85484 /* If the file was opened successfully, read the schema for the new database.
85997 Schema *pSchema, /* The schema of the expression */
86273 ** transaction on each used database and to verify the schema cookie
86403 /* All mutexes are required for schema access. Make sure we hold them. */
86433 /* Read the database schema. If an error occurs, leave an error message
86457 ** the search to schema (p->pSchema) if it is not NULL. p->pSchema may be
86493 /* All mutexes are required for schema access. Make sure we hold them. */
86497 Schema *pSchema = db->aDb[j].pSchema;
86586 ** Reset the schema for the database at index iDb. Also reset the
86587 ** TEMP schema.
86593 /* Case 1: Reset the single schema identified by iDb */
86612 ** Erase all schema information from all attached databases (including
86667 ** contains lookaside memory. (Table objects in the schema do not use
86674 TESTONLY( int nLookaside; ) /* Used to verify lookaside not used for schema */
86682 /* Record the number of outstanding lookaside allocations in schema Tables
86683 ** prior to doing any free() operations. Since schema Tables do not use
86720 /* Verify that no lookaside memory was used by schema tables */
86865 ** unqualified name for a new schema object (table, index, view or
87521 ** Generate code that will increment the schema cookie.
87523 ** The schema cookie is used to determine when the schema for the
87524 ** database changes. After each schema change, the cookie value
87525 ** changes. When a process first reads the schema it records the
87527 ** it checks the cookie to make sure the schema has not changed
87531 ** the schema to change multiple times and for the cookie to be
87532 ** set back to prior value. But schema changes are infrequent
87731 ** internal schema data structures and the generated VDBE code so that they
87742 ** schema to the rootpage from the main table.
87743 ** (4) Set all columns of the PRIMARY KEY schema object to be NOT NULL.
87975 ** as a schema-lock must have already been obtained to create it. Since
87976 ** a schema-lock excludes all other database users, the write-lock would
88059 Schema *pSchema = p->pSchema;
88281 ** This function is called by the VDBE to adjust the internal schema
88324 ** Also write code to modify the sqlite_master table and internal schema
88352 ** Code to update the sqlite_master tables and internal schema definitions
88493 /* Remove the table entry from SQLite's internal schema and modify
88494 ** the schema cookie.
88950 ** if initialising a database schema.
89010 ** sqlite_master table (because some other process changed the schema) and
89278 ** table to parse the schema, or if this index is the PRIMARY KEY index
89327 /* Fill the index with data and reparse the schema. Code an OP_Expire
89963 ** Record the fact that the schema cookie will need to be verified
89964 ** for database iDb. The code to actually verify the schema cookie
90177 assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */
90212 /* Read the database schema. If an error occurs, leave an error message
90794 ** Free all resources held by the schema structure. The void* argument points
90795 ** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the
90797 ** of the schema hash tables).
90799 ** The Schema.cache_size variable is not cleared.
90805 Schema *pSchema = (Schema *)p;
90830 ** Find and return the schema associated with a BTree. Create
90833 SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
90834 Schema * p;
90836 p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear);
90838 p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema));
93587 ** search the schema for a unique index on the parent key columns.
94090 ** given the following schema:
94170 ** any modifications to the schema are made. This is because statement
94171 ** transactions are not able to rollback schema changes.
94317 ** schema items cannot be located, set an error in pParse and return
94534 ** the following schema:
94764 ** table pTab. Remove the deleted foreign keys from the Schema.fkeyHash
98806 ** If the TEMP database is open, close it and mark the database schema
99022 /* Make sure the database schema is loaded if the pragma requires that */
99867 HashElem *k; /* Loop counter: Next table in schema */
100284 ** will be overwritten when the schema is next loaded. If it does not
100320 ** the value of the schema-version and user-version, respectively. Both
100321 ** the schema-version and the user-version are 32-bit signed integers
100324 ** The schema-cookie is usually only manipulated internally by SQLite. It
100325 ** is incremented by SQLite whenever the database schema is modified (by
100326 ** creating or dropping a table or index). The schema version is used by
100328 ** of the schema used when compiling the SQL query matches the schema of
100331 ** the schema-version is potentially dangerous and may lead to program
100338 int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */
100596 ** interface, and routines that contribute to loading the database schema
100613 "malformed database schema (%s)", zObj);
100709 ** Attempt to read the database schema and initialize internal
100762 /* zMasterSchema and zInitScript are set to point at the master schema
100773 /* Construct the schema tables. */
100818 ** meta[0] Schema cookie. Changes with each schema change.
100819 ** meta[1] File format of schema layer.
100903 /* Read the schema information out of the schema tables
100936 ** the schema
100939 ** of the schema was loaded before the error occurred. The primary
100989 /* Once all the other databases have been initialized, load the schema
100991 ** schema may contain references to objects in other databases.
101012 ** This routine is a no-op if the database schema is already initialized.
101013 ** Otherwise, the schema is loaded. An error code is returned.
101031 ** Check schema cookies in all databases. If any cookie is out
101032 ** of date set pParse->rc to SQLITE_SCHEMA. If all schema cookies
101060 /* Read the schema cookie from the database. If it does not match the
101061 ** value stored as part of the in-memory schema representation,
101078 ** Convert a schema pointer into the iDb index that indicates
101079 ** which database file in db->aDb[] the schema refers to.
101084 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
101152 ** to the schema.
101155 ** schema changes and if those schema changes are subsequently rolled
101157 ** prepared statement goes to run the schema cookie would fail to detect
101158 ** the schema change. Disaster would follow.
101162 ** is not possible for another thread to start a new schema change
101164 ** locks on the schema, we just need to make sure nobody else is
101168 ** but it does *not* override schema lock detection, so this all still
101178 sqlite3Error(db, rc, "database schema is locked: %s", zDb);
101312 ** Rerun the compilation of a statement after a schema change.
101351 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
101353 ** and the statement is automatically recompiled if an schema change
101437 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
101439 ** and the statement is automatically recompiled if an schema change
102897 ** column specific strings, in case the schema is reset before this
107117 ** triggers on pTab in the TEMP schema. This routine prepends all
107126 Schema * const pTmpSchema = pParse->db->aDb[1].pSchema;
107558 ** This function is called to drop a trigger from the database schema.
108130 /* Sanity checking: The schema for the trigger and for the table are
108131 ** always defined. The trigger must be in the same schema as the table
109119 ** restored before returning. Then set the writable-schema flag, and
109162 ** to read the schema was concluded. Unlock it here so that this doesn't
109210 /* Query the schema of the main database. Create a mirror schema
109283 ** The increment is used to increase the schema cookie so that other
109284 ** connections to the same database will know to reread the schema.
109287 BTREE_SCHEMA_VERSION, 1, /* Add one to the old schema cookie */
109540 ** objects without disturbing the rest of the Schema object (which may
109605 ** structure is associated with a single sqlite3* user of the schema.
109772 ** allows a schema that contains virtual tables to be loaded before
109776 Schema *pSchema = pTab->pSchema;
109876 const char *zFormat = "vtable constructor did not declare schema: %s";
110040 ** This function is used to set the schema of a virtual table. It is only
122976 Schema *pSchema = db->aDb[i].pSchema;
123100 ** the pager rollback and schema reset an atomic operation. */
123117 /* Clear the TEMP schema separately and last */
123173 /* The temp-database schema is allocated differently from the other schema
123175 ** So it needs to be freed here. Todo: Why not roll the temp schema into
123204 ** modified the database schema. If the b-tree mutexes are not taken
123206 ** the database rollback and schema reset, which can cause false
123371 /* SQLITE_SCHEMA */ "database schema has changed",
124760 ** database schema yet. This is delayed until the first time the database
125105 /* Ensure the database schema has been loaded */
127411 ** Invoke sqlite3_declare_vtab() to declare the schema for the FTS3 table
128276 /* Declare the table schema to SQLite. */
132713 ** Schema of the terms table.
135989 ** comment above struct HashTableVtab) to the database schema. Both
136296 ** The table created has the following schema:
136419 ** Schema of the tokenizer table.
142217 ** tables. The schema of the virtual table being:
147879 /* Create/Connect to the underlying relational database schema. If
147881 ** the r-tree table schema.
