SELECT * FROM artists_backup Code language: SQL (Structured Query Language) ( sql ) If you query data from the artists_backup table, you will see all data in the artists table. SELECT ArtistId, Name FROM artists Code language: SQL (Structured Query Language) ( sql ) To insert data into the artists_backup table with the data from the artists table, you use the INSERT INTO SELECT statement as follows: INSERT INTO artists_backup ) Code language: SQL (Structured Query Language) ( sql ) Suppose you want to backup the artists table, you can follow these steps:įirst, create a new table named artists_backup as follows: CREATE TABLE artists_backup(ĪrtistId INTEGER PRIMARY KEY AUTOINCREMENT, ![]() SQLite INSERT – Inserting new rows with data provided by a SELECT statement However, the name column does not have any default value, therefore, the INSERT DEFAULT VALUES statement inserts NULL into it. The default value of the ArtistId column is the next sequential integer. To verify the insert, you use the following statement: SELECTĪrtistId DESC Code language: SQL (Structured Query Language) ( sql ) ![]() The third form of the INSERT statement is INSERT DEFAULT VALUES, which inserts a new row into a table using the default values specified in the column definition or NULL if the default value is not available and the column does not have a NOT NULL constraint.įor example, the following statement inserts a new row into the artists table using INSERT DEFAULT VALUES: INSERT INTO artists DEFAULT VALUES Code language: SQL (Structured Query Language) ( sql ) When you create a new table using the CREATE TABLE statement, you can specify default values for columns, or a NULL if a default value is not specified. Try It SQLite INSERT – Inserting default values You can verify the result using the following statement: SELECTĪrtistId DESC LIMIT 3 Code language: SQL (Structured Query Language) ( sql ) ( "Charlie Byrd") Code language: SQL (Structured Query Language) ( sql ) The following example inserts three rows into the artists table: INSERT INTO artists ( name) )Ĭode language: SQL (Structured Query Language) ( sql )Įach value list following the VALUES clause is a row that will be inserted into the table. To insert multiple rows into a table, you use the following form of the INSERT statement: INSERT INTO table1 (column1,column2. SQLite INSERT – Inserting multiple rows into a table You can verify the insert operation by using the following SELECT statement: SELECTĪrtistId DESC LIMIT 1 Code language: SQL (Structured Query Language) ( sql )Īs you see, we have a new row in the artists table. SQLite automatically geneate a sequential integer number to insert into the ArtistId column. ![]() VALUES( 'Bud Powell') Code language: SQL (Structured Query Language) ( sql )īecause the ArtistId column is an auto-increment column, you can ignore it in the statement. The following statement insert a new row into the artists table: INSERT INTO artists ( name) We will use the artists table in the sample database for the demonstration. The number of values in the value list must be the same as the number of columns in the column list. If you omit the column list, you have to specify values for all columns in the value list.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |