Date: September 19, 2014 11:57PM Hi, I am having an issue with a subquery in SELECT statement returning unexpected data type. Consider the following example: CREATE TABLE foo ( id INT(11) NOT NULL AUTO_INCREMENT, a BIT(1) NOT NULL, ...
select <select_expr> from (<select_statement>) [<sq_alias_name>]; 参数说明 select_expr:必填。格式为col1_name, col2_name, 正则表达式,...,表示待查询的普通列、分区列或正则表达式。 select_statement:必填。子查询语句。格式请参见SELECT语法。 sq_alias_name:可选。子查询的别名。 table_name:必填...
Paging Data in T-SQL Sometimes when working with very large sets of data, you may not want to return all of the data at once. I discussed using TOP... 20 March 202310 min read Learn SQL Server Greg LarseninLearn SQL Server Using TOP clause in a SELECT statement ...
A subquery is also called an inner query or inner select, while the statement containing a subquery is also called an outer query or outer select. Many Transact-SQL statements that include subqueries can be alternatively formulated as joins. Other questions can be posed only with subqueries. In...
首先看看不用With语句的效果, SQL>setautotraceon SQL>settimingon SQL> SQL>SELECTregion 2 , total_sales 3FROM( 4SELECTregion 5 , NVL(SUM(order_amt), 0)AStotal_sales 6FROMsales 7GROUPBY 8 region 9 ) ilv 10WHEREtotal_sales > (SELECTSUM(order_amt)/3ASone_third_sales ...
A subquery is also called an inner query or inner select, while the statement containing a subquery is also called an outer query or outer select. Many Transact-SQL statements that include subqueries can be alternatively formulated as joins. Other questions can be posed only with subqueries. In...
> So I guess that only on a single row update basis ('VALUES' statement) is the "WITH PRIMARY KEY" clause required? "WITH PRIMARY KEY" is not a must on a single row update. You can use WHERE <condition> instead. Sometimes you use neither WHERE <condition> nor WITH PRIMARY KEY Synta...
SelectElement SelectFunctionReturnType SelectInsertSource SelectiveXmlIndexPromotedPath SelectScalarExpression SelectSetVariable SelectStarExpression SelectStatement SelectStatementSnippet SemanticFunctionType SemanticTableReference SendStatement SensitivityClassificatio...
The names of the columns of the result set are defined by theSELECTof the subquery by default. However they can be overwritten in theWITHstatement. If a union set is created in the subquery usingUNION, the column names are determined by theSELECTlist of the firstSELECTstatement. ...
Description:MySQL return wrong results for query with subquery in select part.How to repeat:Load dump into database and launch following statement: select USR.id, ( select COUNT(*) from projects P where P.user_id = USR.id and P.status <> 0 and P.deleted = 0 and DATE(P.date) >= ...