Lines Matching defs:Schema
949 #define SQLITE_SCHEMA 17 /* The database schema changed */
2859 ** schema change. Hence, the application should ensure that the
2866 ** sqlite3_prepare_v2() to reprepare a statement after a schema change.
3479 ** ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
3497 ** a schema change, on the first [sqlite3_step()] call following any change
3922 ** ^(For example, given the database schema:
5182 ** and schema data structures between [database connection | connections]
5714 ** CAPI3REF: Declare The Schema Of A Virtual Table
6534 ** memory used to store the schema for all databases associated
6537 ** schema memory is shared with other database connections due to
8056 ** The name of the schema table.
8131 typedef struct Schema Schema;
8398 SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*);
9602 Schema *pSchema; /* Pointer to database schema (possibly shared) */
9606 ** An instance of the following structure stores a database schema.
9608 ** Most Schema objects are associated with a Btree. The exception is
9609 ** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing.
9610 ** In shared cache mode, a single Schema object can be shared by multiple
9613 ** Schema objects are automatically deallocated when the last Btree that
9614 ** references them is destroyed. The TEMP Schema is manually freed by
9618 ** to access Schema content. This implies that the thread must also be
9620 ** For a TEMP Schema, only the connection mutex is required.
9622 struct Schema {
9623 int schema_cookie; /* Database schema version number for this file */
9630 u8 file_format; /* Schema format version for this file */
9632 u16 flags; /* Flags associated with this schema */
9648 ** The DB_SchemaLoaded flag is set after the database schema has been
9652 ** have been filled out. If the schema changes, these column names might
9655 #define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
9679 ** with a particular database connection. Hence, schema information cannot
9680 ** be stored in lookaside because in shared cache mode the schema information
9682 ** schema information, the Lookaside.bEnabled flag is cleared so that
9683 ** lookaside allocations are not used to construct the schema objects.
9847 #define SQLITE_RecoveryMode 0x00800000 /* Ignore schema errors */
10094 ** the database schema.
10096 ** If the database schema is shared, then there is one instance of this
10098 ** schema. This is because each database connection requires its own unique
10102 ** schema is shared, as the implementation often stores the database
10111 ** database schema are initially stored in a linked-list pointed to by
10119 ** schema is being reloaded for some reason), the VTable objects are not
10200 Schema *pSchema; /* Schema that contains this table */
10378 Schema *pSchema; /* Schema containing this index */
10533 ** Expr objects can use a lot of memory space in database schema. To
11089 u8 checkSchema; /* Causes schema cookie check after an error */
11117 yDbMask cookieMask; /* Bitmask of schema verified databases */
11162 Token sNameToken; /* Token with unqualified schema object name */
11201 * Each trigger present in the database schema is stored as an instance of
11223 Schema *pSchema; /* Schema containing the trigger */
11224 Schema *pTabSchema; /* Schema containing the table */
11799 SQLITE_PRIVATE void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
11943 SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
11944 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
13446 ** to store the schema for all databases (main, temp, and any ATTACHed
13456 Schema *pSchema = db->aDb[i].pSchema;
48510 ** 40 4 Schema cookie
48511 ** 44 4 File format of schema layer
48772 ** schema associated with the database file are all contained within
49316 ** db->aDb[iDb].pSchema structure. The mutexes required for schema
49325 SQLITE_PRIVATE int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){
49428 ** Enable or disable the shared pager and schema features.
49479 ** function has to search through the database schema.
49482 ** hold a write-lock on the schema table (root page 1). This is also
49491 Schema *pSchema = (Schema *)pBtree->pBt->pSchema;
49505 /* If the client is reading or writing an index and the schema is
49531 ** write-lock on the schema table, or (if the client is reading) a
56752 ** The schema layer numbers meta values differently. At the schema
57467 ** purposes (for example, to store a high-level schema associated with
57664 u32 iDestSchema; /* Original schema cookie in destination */
58042 /* Update the schema version field in the destination database. This
58043 ** is to make sure that the schema-version really does change in
58045 ** same schema version.
63085 ** schema change has occurred. That detail is handled by the
63219 ** sqlite3Step() to do most of the work. If a schema error occurs,
63765 ** as if there had been a schema change, on the first sqlite3_step() call
64978 u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
67802 ** P3==1 is the schema version. P3==2 is the database format.
67833 ** into cookie number P2 of database P1. P2==1 is the schema version.
67855 /* When the schema cookie changes, record the new cookie internally */
67864 ** schema is changed. Ticket #1644 */
67874 ** schema version) and make sure it is equal to P2 and that the
67875 ** generation counter on the local schema parse equals P3.
67881 ** The cookie changes its value whenever the database schema changes.
67883 ** and that the current process needs to reread the schema.
67908 p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed");
67909 /* If the schema-cookie from the database file matches the cookie
67910 ** stored with the in-memory representation of the schema, do
67911 ** not reload the schema from the database file.
67917 ** discard the database schema, as the user code implementing the
69818 ** schema consistent with what is on disk.
69830 ** schema consistent with what is on disk.
69842 ** schema consistent with what is on disk.
71310 {OP_VerifyCookie, 0, 0, 0}, /* 1: Check the schema cookie */
73327 Schema *pSchema = 0; /* Schema of the expression */
75237 ** part of the in-memory representation of the database schema.
76268 ** of a "NOT NULL" constraint in the database schema.
78732 const Schema *pTempSchema = pParse->db->aDb[1].pSchema; /* Temp db schema */
78736 ** that is not part of the temp-db schema, add a clause to the WHERE
78758 ** Argument zName is the name of the table in the database schema at
78778 /* Drop any table triggers from the internal schema. */
78786 /* Drop the table and index from the internal schema. */
78904 ** Then modify the schema cookie (since the ALTER TABLE modifies the
78905 ** schema). Open a statement transaction if the table is a virtual
79011 /* Drop and reload the internal table schema. */
79159 /* Reload the schema of the modified table. */
79247 /* Begin a transaction and increment the schema cookie. */
79979 Schema *pSchema = db->aDb[iDb].pSchema; /* Schema of database iDb */
80042 /* Read the database schema. If an error occurs, leave an error message
80498 /* Allocate the new entry in the db->aDb[] array and initialise the schema
80514 ** it to obtain the database schema. At this point the schema may
80587 /* If the file was opened successfully, read the schema for the new database.
81082 Schema *pSchema, /* The schema of the expression */
81343 ** transaction on each used database and to verify the schema cookie
81469 /* All mutexes are required for schema access. Make sure we hold them. */
81499 /* Read the database schema. If an error occurs, leave an error message
81534 /* All mutexes are required for schema access. Make sure we hold them. */
81538 Schema *pSchema = db->aDb[j].pSchema;
81593 ** Erase all schema information from the in-memory hash tables of
81596 ** if there were schema changes during the transaction or if a
81597 ** schema-cookie mismatch occurs.
81599 ** If iDb<0 then reset the internal schema tables for all database
81600 ** files. If iDb>=0 then reset the internal schema for only the
81608 /* Case 1: Reset the single schema identified by iDb */
81642 ** schema hash tables and therefore do not have to make any changes
81886 ** unqualified name for a new schema object (table, index, view or
82485 ** Generate code that will increment the schema cookie.
82487 ** The schema cookie is used to determine when the schema for the
82488 ** database changes. After each schema change, the cookie value
82489 ** changes. When a process first reads the schema it records the
82491 ** it checks the cookie to make sure the schema has not changed
82495 ** the schema to change multiple times and for the cookie to be
82496 ** set back to prior value. But schema changes are infrequent
82745 ** as a schema-lock must have already been obtained to create it. Since
82746 ** a schema-lock excludes all other database users, the write-lock would
82827 Schema *pSchema = p->pSchema;
83050 ** This function is called by the VDBE to adjust the internal schema
83093 ** Also write code to modify the sqlite_master table and internal schema
83121 ** Code to update the sqlite_master tables and internal schema definitions
83261 /* Remove the table entry from SQLite's internal schema and modify
83262 ** the schema cookie.
83714 ** if initialising a database schema.
83769 ** sqlite_master table (because some other process changed the schema) and
84088 /* Fill the index with data and reparse the schema. Code an OP_Expire
84717 ** Generate VDBE code that will verify the schema cookie and start
84720 ** It is important that all schema cookies be verified and all
84727 ** record every database that needs its schema verified in the
84735 ** schema on any databases. This can be used to position the OP_Goto
84896 assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */
84931 /* Read the database schema. If an error occurs, leave an error message
85413 ** Free all resources held by the schema structure. The void* argument points
85414 ** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the
85416 ** of the schema hash tables).
85418 ** The Schema.cache_size variable is not cleared.
85424 Schema *pSchema = (Schema *)p;
85449 ** Find and return the schema associated with a BTree. Create
85452 SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
85453 Schema * p;
85455 p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear);
85457 p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema));
87886 ** search the schema a unique index on the parent key columns.
88323 ** given the following schema:
88403 ** any modifications to the schema are made. This is because statement
88404 ** transactions are not able to rollback schema changes. */
88470 ** schema items cannot be located, set an error in pParse and return
88695 ** the following schema:
88921 ** table pTab. Remove the deleted foreign keys from the Schema.fkeyHash
92192 ** If the TEMP database is open, close it and mark the database schema
92637 /* Force the schema to be loaded on all databases. This causes all
93375 ** will be overwritten when the schema is next loaded. If it does not
93405 ** the value of the schema-version and user-version, respectively. Both
93406 ** the schema-version and the user-version are 32-bit signed integers
93409 ** The schema-cookie is usually only manipulated internally by SQLite. It
93410 ** is incremented by SQLite whenever the database schema is modified (by
93411 ** creating or dropping a table or index). The schema version is used by
93413 ** of the schema used when compiling the SQL query matches the schema of
93416 ** the schema-version is potentially dangerous and may lead to program
93426 int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */
93651 ** interface, and routines that contribute to loading the database schema
93668 "malformed database schema (%s)", zObj);
93764 ** Attempt to read the database schema and initialize internal
93815 /* zMasterSchema and zInitScript are set to point at the master schema
93826 /* Construct the schema tables. */
93871 ** meta[0] Schema cookie. Changes with each schema change.
93872 ** meta[1] File format of schema layer.
93953 /* Read the schema information out of the schema tables
93986 ** the schema loaded, even if errors occurred. In this situation the
93989 ** of the schema was loaded before the error occurred. The primary
94039 /* Once all the other databases have been initialised, load the schema
94041 ** schema may contain references to objects in other databases.
94062 ** This routine is a no-op if the database schema is already initialised.
94063 ** Otherwise, the schema is loaded. An error code is returned.
94081 ** Check schema cookies in all databases. If any cookie is out
94082 ** of date set pParse->rc to SQLITE_SCHEMA. If all schema cookies
94110 /* Read the schema cookie from the database. If it does not match the
94111 ** value stored as part of the in-memory schema representation,
94128 ** Convert a schema pointer into the iDb index that indicates
94129 ** which database file in db->aDb[] the schema refers to.
94134 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
94191 ** to the schema.
94194 ** schema changes and if those schema changes are subsequently rolled
94196 ** prepared statement goes to run the schema cookie would fail to detect
94197 ** the schema change. Disaster would follow.
94201 ** is not possible for another thread to start a new schema change
94203 ** locks on the schema, we just need to make sure nobody else is
94207 ** but it does *not* override schema lock detection, so this all still
94217 sqlite3Error(db, rc, "database schema is locked: %s", zDb);
94350 ** Rerun the compilation of a statement after a schema change.
94389 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
94391 ** and the statement is automatically recompiled if an schema change
94469 ** and so if a schema change occurs, SQLITE_SCHEMA is returned by
94471 ** and the statement is automatically recompiled if an schema change
95652 ** column specific strings, in case the schema is reset before this
99353 ** triggers on pTab in the TEMP schema. This routine prepends all
99362 Schema * const pTmpSchema = pParse->db->aDb[1].pSchema;
99796 ** This function is called to drop a trigger from the database schema.
100366 /* Sanity checking: The schema for the trigger and for the table are
100367 ** always defined. The trigger must be in the same schema as the table
101233 ** restored before returning. Then set the writable-schema flag, and
101276 ** to read the schema was concluded. Unlock it here so that this doesn't
101324 /* Query the schema of the main database. Create a mirror schema
101397 ** The increment is used to increase the schema cookie so that other
101398 ** connections to the same database will know to reread the schema.
101401 BTREE_SCHEMA_VERSION, 1, /* Add one to the old schema cookie */
101691 ** structure is associated with a single sqlite3* user of the schema.
101858 ** allows a schema that contains virtual tables to be loaded before
101862 Schema *pSchema = pTab->pSchema;
101957 const char *zFormat = "vtable constructor did not declare schema: %s";
102121 ** This function is used to set the schema of a virtual table. It is only
105501 ** set to 9. Given the same schema and either of the following WHERE
113269 /* The temp-database schema is allocated differently from the other schema
113271 ** So it needs to be freed here. Todo: Why not roll the temp schema into
113348 /* SQLITE_SCHEMA */ "database schema has changed",
114687 ** database schema yet. This is delayed until the first time the database
115027 /* Ensure the database schema has been loaded */
117166 ** Invoke sqlite3_declare_vtab() to declare the schema for the FTS3 table
117971 /* Declare the table schema to SQLite. */
121856 ** Schema of the terms table.
124768 ** comment above struct HashTableVtab) to the database schema. Both
128441 ** tables. The schema of the virtual table being:
133192 /* Create/Connect to the underlying relational database schema. If
133194 ** the r-tree table schema.
