PK_NAME The name of the primary key.参见 db2_column_privileges() - Returns a result set listing the columns and associated privileges for a table db2_columns() - Returns a result set listing the columns and associated metadata for a table db2_foreign_keys() - Returns a result set list...
SQLPrimaryKeys() returns a list of column names that comprise the primary key for a table. The information is returned in an SQL result set. This result set can be retrieved by using the same functions that process a result set that is generated by a que
You can change the primary key for the table that you are creating. A primary key is a column or set of columns that can be used to identify or access a particular row or rows. A primary key is a unique key, that is, it is a key that is constrained so th
$tableName =$this->table;// Special processing for IBM databases:// IBM table names can contain schema name as prefix// Column metadata returned by pdo_ibm does not specify the primary key// Hence primary key for IBM databases has to be obtained using// db2_primary_key.if(strpos($this-...
mysql新建表指定primarykey 并且自增 mysql创建表自增 当我们对MySQL进行分表操作后,将不能依赖MySQL的自动增量来产生唯一ID了,因为数据已经分散到多个表中。 应尽量避免使用自增IP来做为主键,为数据库分表操作带来极大的不便。 在postgreSQL、oracle、db2数据库中有一个特殊的特性---sequence。 任何时候数据库可以...
I am using DB2-UDB (no mainframe) Upvote 0 Downvote Jul 29, 2003 #4 fahmy80 Programmer Jul 23, 2003 3 IN Consider the following values for the table fields : secondary_field1 char 4 = '1234' ==> primary key secondary_field2 char 4 = '5678' ==> primary key secondary_field3...
TABLE_SCHEMName of the schema for the table containing the primary key. TABLE_NAMEName of the table containing the primary key. COLUMN_NAMEName of the column containing the primary key. KEY_SEQ1-indexed position of the column in the key. ...
DB2 PIPES_AS_CONCAT、ANSI_QUOTES、IGNORE_SPACE、NO_KEY_OPTIONS、NO_TABLE_OPTIONS、NO_FIELD_OPTIONS MAXDB PIPES_AS_CONCAT、ANSI_QUOTES、IGNORE_SPACE、NO_KEY_OPTIONS、NO_TABLE_OPTIONS、NO_FIELD_OPTIONS、 NO_AUTO_CREATE_USER MSSQL PIPES_AS_CONCAT、ANSI_QUOTES、IGNORE_SPACE、NO_KEY_OPTIONS、NO_TA...
Sanity check: primary key(a, b) implies index Nov 12 '05, 11:56 AM hi. i very rarely do db2 stuff, so i just need to be confirmed that when i do: create table ( col_a int, col_b varchar(10), col_c int, primary key(col_a, col_b) ...
COLUMN_NAME Name of the column containing the primary key. KEY_SEQ 1-indexed position of the column in the key. PK_NAME The name of the primary key.参见 db2_column_privileges() - Returns a result set listing the columns and associated privileges for a table db2_columns() - Returns a ...