sql if then else syntax

Case has two formats. Simple case function and case search function.--Simple case function when ' 1 ' then ' Male ' when ' 2 ' then ' women ' else ' other ' end--case search function case when sex = ' 1 ' Then ' man ' when

PL/SQL script language value assignment statement syntax table and record comply with the type usage, select the statement if else usage anonymous block (1), assign value statement syntax PL/SQL values use: = "=" some rules need to be observed in

CASE has two formats:The simple CASE function compares an expression with a group of simple expressions to determine the result.The CASE search function calculates a group of Boolean expressions to determine the result.Both formats support the

SQL statement-case when then else end, SQL-case Output the following results based on the preceding table information: The following are the database and table structure data: create table DeptSales(deptID int,SubjMonth int ,sales int ,deptname

One of the SQL statement judgment methodsCase has two formats. Simple case functions and case search functions.-- Simple case FunctionCase sexWhen '1' then 'male'When '2' then 'female'Else 'others' end-- Case search functionCase when sex = '1' then '

The data SQL CASE expression is a generic conditional expression that resembles a if/else statement in another language.Case if condition then resultWhen condition then result.............[When ...][ELSE result]ENDThe case clause can be used where

MySQL is the most basic SQL syntax. For more information, see. The most basic SQL syntax/Statement of MySQL. For more information, see. DDL-Data Definition Language (Create, Alter, Drop, DECLARE) DML-data manipulation language (Select, Delete,

MySQL's most basic SQL syntax/statementMySQL's most basic SQL syntax/statement, using MySQL friends can refer to below. ddl-Data Definition language (create,alter,drop,declare)dml-Data Manipulation Language (Select,delete,update,insert)dcl-Data

ddl-Data Definition language (create,alter,drop,declare)dml-Data Manipulation Language (Select,delete,update,insert)dcl-Data Control Language (Grant,revoke,commit,rollback)First, a brief introduction to the underlying statement:1. Description:

ddl-Data Definition language (create,alter,drop,declare)dml-Data Manipulation Language (Select,delete,update,insert)dcl-Data Control Language (Grant,revoke,commit,rollback)First, a brief introduction to the underlying statement:1. Description: