在我的父图表Chart.yaml中,我有 dependencies: - name: postgresql11 repository: "@myrepo" version: 8.9.7 condition: postgresql11.enabled - name: postgresql12 repository: "@myrepo" version: 8.9.7 condition: postgresql12.enabled 在同一个父图表values.yaml中,我有: postgresql11: 浏览24提问于2020-...
-- i will take on the values 10,9,8,7,6,5,4,3,2,1 within the loop END LOOP; FOR i IN REVERSE 10..1 BY 2 LOOP -- i will take on the values 10,8,6,4,2 within the loop END LOOP; 1. Looping Through Query Results 如果循环由EXIT语句终止,则最后一个分配的行值仍然可以在循环...
Using IF in PL/pgSQL The IF statement in PL/pgSQL allows developers to execute conditional operations within a procedural block. Syntax: DO $$ BEGIN IF condition THEN -- Statements to execute if condition is true ELSIF other_condition THEN -- Statements for the next condition ELSE -- Statem...
client.query("ROLLBACK"); } } finally { client.release(); } execute(); 上面的代码正在工作,尽管我想在事务中放置两个if-else条件块,如果满足条件,它将触发2个查询,如果是true还是false,它将继续执行if (someCondition == 1)条件块。 下面是两个if-else条件: if (conditionA == true) { await pool...
PostgreSQL supports CASE expression which is the same as if/else statements of other programming languages. The CASE expression can be used with SELECT, WHERE, GROUP BY, and HAVING clauses. Syntax Copy CASE WHEN <condition1> THEN <result1> WHEN <condition2> THEN <result2> …. [ELSE <else...
This tutorial works for PostgreSQL anywhere. If you need cloud Postgres, get the free plan on Neon. Summary: in this tutorial, you will learn how to use the PL/pgSQL if statements to execute a command based on a specific condition. Introduction to PL/pgSQL IF Statement The if statement ...
if (condition) { // 条件为真时执行的代码 } else if (anotherCondition) { // 另一个条件为真时执行的代码 } else { // 所有条件都为假时执行的代码 } 比较两个值的示例 假设我们要比较两个整数a和b,并根据比较结果执行不同的操作。 示例代码 代码语言:txt 复制 int a = 10; int b = 20; if...
Einführung in PostgreSQL CASE Im Folgenden wird die allgemeine Form eines PostgreSQL-Falls mit dem WHEN-THEN -Konstrukt beschrieben - CASE WHEN condition_1 THEN result_1 WHEN condition_2 THEN result_2 ... ELSE result_n END Powered By Hier sind einige wichtige Punkte, die du bei der Er...
Method 1 – Using a Logical Operator to Test the If Greater Than Condition Here’s a dataset of the marks obtained by several students. We want to find who got a score higher than 80. Steps: Insert the following formula in cell D5 =C5>80 Hit Enter. Repeat the formula while changing...
IfConditionActivity public IfConditionActivity() Erstellt eine instance der IfConditionActivity-Klasse.Details zur Methode expression public Expression expression() Abrufen der Ausdruckseigenschaft: Ein Ausdruck, der in Boolean ausgewertet würde. Dies wird verwendet, um den Block von Aktivitäten (if...