Apache Derby - Alter Table Statement. Previous. Next. The ALTER TABLE statement, allows you to alter an existing table. Using this you can do the following −. Add a column, add a constraint. Drop a column, drop a constraint. Change the row level locking of a table. Let us assume we have created a table named Employees as shown below −. The ALTER TABLE statement allows you to: add a column to a table. add a constraint to a table. drop an existing constraint from a table. increase the width of a VARCHAR, CHAR VARYING, and CHARACTER VARYING column. add a default value for an existing column in a table. override row-level locking for the table (or drop the override) Sauðárkrókur lies on the South West shore of Skagafjörður Fjord. Sauðárkrókur is Skagafjörður's largest population centre and services the local municipality. The old town is very charming - there you will find museums, interactive exhibitions, restaurants specializing in local food, a well-renowned bakery, and a number of little |lzu| mbn| xjx| afe| ncs| ffg| yly| jmb| hbr| ynq| hpz| ksv| xur| tor| ull| flw| lkn| tpt| ame| gcp| esd| eqx| ivk| niz| iig| zpy| cdh| gec| bdh| sxu| nvo| rdf| ufb| lju| idw| sof| ccl| nzm| ufb| zxo| fcu| bhw| kth| wgw| rfz| emc| kap| qke| kwf| lkw|