update primary key sql

Extract running pora_1 00:00:00 00:00:05 Replicat stopped rora_1 00:00:00 00:00:01 GC2: SQL>Update tcustmer set cust_code = 'new' wherename = 'Rocky flyer Inc. '; -- updata operation on GC2 SQL>Commit; SQL>Select * From tcustmer where cust_code = 'new '; Cust_code name city ST -----------------------------------------

Extract running PORA_1 00:00:00 00:00:05 Replicat stopped RORA_1 00:00:00 00:00:01 Gc2: SQL>Update TCUSTMER set CUST_CODE = 'new' WHERENAME = 'Rocky flyer inc. '; -- updata operation on gc2 SQL>Commit; SQL>Select * from TCUSTMER where CUST_CODE = 'new '; CUST_CODE NAME CITY ST -----------------------------------------

Tag: The person string set succeeds Deb causes the code lang to be setThe primary key must be unique in the same table, and if the primary key specified at the time of the data update is duplicated with the data already in the table, the exception that violates the

/study_jdbc?characterEncoding=utf8username=rootpassword=********JDBC DDL:Connection connection = DriverUtils.getConnection"DROP TABLE IF EXISTS `update_return_value`;"" CREATE TABLE `update_return_value`" "(`id` bigint(20) PRIMARY KEY NOT NULL AUTO_INCREMENT, `name` varchar(255))" "ENGINE=InnoDB AUTO_INCREMENT=1;";PreparedStatement preparedStatement = connection.prepareStatement(sql1);preparedStatemen

Note No is a primary key in the Access table I want to change the ID of no=290 to 11, and the following two sentences do not change after execution $query = "Update sensors set id=11 where no=290"; $result = $conn->execute ($query); ----------------------------------------------- But the following two sentences are effective after execution, can change the reco

The update operation has a primary key conflict error, and if such a problem arises, you will find it inconceivable. mysql> UPDATE ' gc_price ' SET ' price ' = ' 155.00 ', ' opttime ' = ' 2013-07-01 16:12:36 ' where ' crcode ' = ' 0109 ' WHERE (prid = 364 706189); ERROR 1062 (23000): Duplicate entry ' 2147483647 ' for

1. Add delete primary key and foreign key For example: -----Delete a PRIMARY KEY constraintDECLARE @NAME SYSNAMEDECLARE @TB_NAME SYSNAMESET @TB_NAME = ' Date 'SELECT TOP 1 @NAME =name from SYS. OBJECTS with (NOLOCK)WHERE type_desc = ' primary_key_constraint ' and parent_o

primary KEY (Primary key) each of the data in the table is a unique value in the form. Other words. It is used to uniquely identify each row of data in a table.The primary key can be a field within the original data. Or a man-made