Table of Contents
How do I delete a sequence in SQLite?
#Deleting the Table Number Sequence. DELETE FROM `sqlite_sequence` WHERE `name` = ‘table_name’; If a table sequence is deleted from the sqlite_sequence table (or it doesn’t exist), SQLite would use the next available number for the ROWID when a new row is inserted in that table.
How does auto increment work in SQLite?
AUTOINCREMENT guarantees that automatically chosen ROWIDs will be increasing but not that they will be sequential. Because AUTOINCREMENT keyword changes the behavior of the ROWID selection algorithm, AUTOINCREMENT is not allowed on WITHOUT ROWID tables or on any table column other than INTEGER PRIMARY KEY.
Is Rowid same as primary key?
The true primary key for a rowid table (the value that is used as the key to look up rows in the underlying B-tree storage engine) is the rowid. The PRIMARY KEY constraint for a rowid table (as long as it is not the true primary key or INTEGER PRIMARY KEY) is really the same thing as a UNIQUE constraint.
What is collate in SQLite?
Collating sequences are used by SQLite when comparing TEXT values to determine order and equality. You can specify which collation to use when creating columns or per-operation in SQL queries. SQLite includes three collating sequences by default. Collation.
What is collate Nocase in SQL?
SQLite has three built-in collating functions: BINARY, NOCASE, and RTRIM. BINARY – Compares string data using memcmp(), regardless of text encoding. NOCASE – It is almost same as binary, except the 26 upper case characters of ASCII are folded to their lower case equivalents before the comparison is performed.
How can I change column auto increment in SQL Server?
If you’re looking to add auto increment to an existing table by changing an existing int column to IDENTITY , SQL Server will fight you. You’ll have to either: Add a new column all together with new your auto-incremented primary key, or. Drop your old int column and then add a new IDENTITY right after.
What is collate Nocase in SQLite?