how to update multiple rows in sql

Perform updates on a single table nothing more to say than to update table_name set col1 = Xx,col2 = yy where col = zz, which is mainly the setting of the Where condition. Sometimes updating a table may involve more than one datasheet, for example: The code is as follows Copy Code Update Table_1 Set score = score + 5 where UID in (select UID from table_2 where sid = 10);In fact,

SQL stored procedures update data through multiple IDs, SQL stored procedures The following is an example: I want to add 1 to the name of some brands (that is, Brand_Name), and Brand_ID is the primary key. The SQL statement is easy to implement. But how can I write the store

Execute an SQL statement update multiple records implementation ideasWhat would you do if you wanted to update multiple rows of data, and the values of each field in each row were different? This article takes an example to explai

What would you do if you wanted to update multiple rows of data, and the values of each field in each row were different? This article takes an example to explain how to implement the situation as shown in the title, a friend with this need to understand under normal circumstances, we will use the following SQL stateme

Typically, we use the following SQL statement to update the field values: Copy Code code as follows: UPDATE mytable SET myfield= ' value ' WHERE other_field= ' other_value '; But what would you do if you wanted to update multiple

Generally, the following SQL statement is used to update the field value:Copy codeThe Code is as follows:UPDATE mytable SET myfield = 'value' WHERE other_field = 'other _ value '; However, what if you want to update multi-row data and record different field values in each row? For example, my blog has three classification directories (free resources, tutorial gui

Cases The code is as follows Copy Code SELECT cat. ' Name ', class. ' Title 'From ' Cat ', ' class 'WHERE cat. ' id ' = class. ' Cat 'and cat. ' ID ' =2LIMIT 0, 30DELETE cat, class from Cat, Class WHERE cat. ' ID ' =class. ' Cat ' and Cat. ' ID ' =1 Multiple table Updatesin MySQL 3.23, you can use LIMIT # to ensure that only the given number of record rows is changed.

', $updates, $field, $fields, $where); return $sql;} /** * Convert a two-dimensional array into case-then-batch update condition * @param $data array two-dimensional array * @param $field string Column name * @return String SQL statement */function ParseUpdate ($data, $field) {$sql = '; $keys = Array_keys (curre

SQL Server triggers enable simultaneous addition, deletion, and update of multiple tables Definition: What is a trigger? In SQL Server is a certain operation of a table, triggering certain conditions, thus executing a program. A trigger is a special stored procedure.There are three common triggers: Apply to insert,

Many people know how to use table aliases in select statements, but there may not be so many people who know how to use table aliases in SQL Update statements, the following describes how to use the table alias for this SQL Update statement for your reference. The SQL

Update Table_1 Set score = score + 5 where UID in (select UID from table_2 where sid = 10); In fact, update can also be used to the left join, inner join to the association, may be more efficient execution, the above SQL to replace theJoin in the following ways: The code is as follows Copy Code

I think a lot of people know that in Oracle, stored procedures can be passed in an array (such as int[]), that is, you can pass multiple records to the data to update together. Reduce the number of requests to the database. But what about SQL Server? Bulk INSERT This is a lot of people know, I also know, but unfortunately, I have never used, only to guide the dat

(SqlParameter Pinchexeunit.param) command. Parameters.Add (P); } result+=command. ExecuteNonQuery (); } transaction.commit (); } Catch(Exception ex) {//Attempt to roll back the transaction. Try{transaction. Rollback (); } Catch(Exception ex2) {return Newresultint>() {Success=false, Message = Ex2. Message, StackTrace =EX2. StackTrace}; }

One-to-multiple table Field update SQL statement table T_A www.2cto.com id name1 Zhang weisan 2 LITH table T_ B id name1 zhangs1 zsan1 zs2 lisi2 ls www.2cto.com objective: change the name of the record corresponding to the id in Table T_ B and the id in Table T_A to be consistent with the name in Table T_A. As follows: id name1 Zhang San 1 Zhang San 1 Zhang San 2

How can I write SQL statements to submit multiple update records first:

Tags: SQL Server duplicateenvironment : Windows Server 2003 sp2,sql Server 2000, software for managing fixed assets.Failure phenomena:To increase the fixed asset information for two Cisco switches at the same time, the serial number is different because the model is identical. So I want to finish one, can directly copy a document to change the inconsistent place on the line. But the front desk can't be real

In the process of writing stored procedures will inevitably encounter proc and cross-Library calls to other people proc, there is a proc in a number of multiple tables to write and modify the statement. Then we'll use the tran.If we're going to write the back of every insert,update without writing a try,IF @ @error 0 OR @ @Rowcount = 0 BEGIN ROLLBACK TRAN

How can I write the SQL code before submitting multiple update records: lt; script nbsp; typetextjavascript nbsp; srcajax. googleapis. comajaxlibsjquery1.4.4jquery. min. js? 1.1.29 gt; lt; script nbsp; srcjss: how can I write SQL statements when submitting multiple

Background of demand generation:Database built into the library when the dictionary data, but this dictionary data, some are inaccurate, so you need to find some fixed data to replace.Problem Resolution Logic:The general logic is, first of all, the fixed need to replace the string extracted, assigned to the variable.The data replaced with replace is then updated with the UPDATE statement.The following code:DECLARE @pacsIp varchar (30)--Define a tempor

Tags: collection of SQL stored procedure IDsHere is an example to illustrate:I want to add the name of a part of the brand (that is, brand_name) followed by 1,brand_id is the primary key, the SQL statement is easy to implement, but how does the stored procedure write?The following error is spelled://************************************************ALTER PROC [dbo]. [Stored procedure name]@Brand_IDs varchar (