In C#, the switch statement serves as a control structure that enables the execution of distinct code blocks based on the value of a variable. It is frequently utilized when there is a need to compare a variable with multiple constant values and to carry out various actions according to the...
1. the act or process of explaining. Let me give a few words of explanation.explicación 2. a statement or fact that explains. There are several possible explanations for the explosion.explicaciónexˈplanatory (-ˈsplӕnə-) adjective giving an explanation. There are explanatory notes ...
1. the act or process of explaining. Let me give a few words of explanation.explicación 2. a statement or fact that explains. There are several possible explanations for the explosion.explicaciónexˈplanatory (-ˈsplӕnə-) adjective giving an explanation. There are explanatory notes ...
格式如下: {EXPLAIN | DESCRIBE | DESC} tbl_name [col_name | wild] {EXPLAIN | DESCRIBE | DESC} [explain_type] {explainable_stmt | FORCONNECTION connection_id} {EXPLAIN | DESCRIBE | DESC} ANALYZE select_statement explain_type: { FORMAT = format_name} format_name: { TRADITIONAL | JSON |...
You can switch to the Version 2 format by setting the value of the explain_json_format_version server system variable to 2, as shown here for the same EXPLAIN statement used in the previous example: mysql> SELECT @@explain_json_format_version; +---+ | @@explain_json_format_version |...
explain可用来分析SQL的执行计划。格式如下: {EXPLAIN|DESCRIBE|DESC} tbl_name [col_name|wild] {EXPLAIN|DESCRIBE|DESC} [explain_type] {explainable_stmt|FORCONNECTION connection_id} {EXPLAIN|DESCRIBE|DESC} ANALYZE select_statement explain_type: { ...
WHILE is a post-test loop (d) All of the above. To jump to the end of the current loop, you can use the 1- end statement. 2- continued statement. 3- break statement. 4- switch statement. Most programmers use a for loop ___. (a) for ever...
wild]{EXPLAIN|DESCRIBE|DESC}[explain_type]{explainable_stmt|FORCONNECTIONconnection_id}{EXPLAIN|DESCRIBE|DESC}ANALYZEselect_statementexplain_type:{FORMAT=format_name}format_name:{TRADITIONAL|JSON|TREE}explainable_stmt:{SELECTstatement|TABLEstatement|DELETEstatement|INSERTstatement|REPLACEstatement|UPDATEstatement...
After reviewing the query again, consider that a multiple-column index can meet the conditions of the WHERE clause that is based on both the o_orderdate and o_clerk columns as the next statement shows. CREATE INDEX io_clerk_date ON orders(o_clerk, o_orderdate)...
aDo you agree or disagree with the following statement? Television, newspapers, magazines, and other media pay too much attention to the personal lives of famous people such as public figures and celebrities. Use specific reasons and details to explain your opinion. 您是否同意或不同意以下声明? 电...