CASE Statement when not null , else if Help Case statement with Between in Where Clause Case statement with Date Comparison CASE statement with substring CASE WHEN - Adding collate into it. Case WHEN and concatenate string CASE WHEN isnumeric(ColValue) THEN ... ELSE ... END CASE WHEN MIN,...
public SelectStatementProvider search(Integer targetId, String fName, String lName) { var builder = select(id, firstName, lastName) // (1) .from(person) .where(); // (2) if (targetId != null) { // (3) builder .and(id, isEqualTo(targetId)); } else { builder .and(firstName...
data1 = spark.createDataFrame([(1, "Alice"), (2, "Bob"), (3, "Charlie")], ["id", "name"]) data2 = spark.createDataFrame([(1, "USA"), (2, "UK"), (4, "India")], ["id", "country"]) result = data1.join(data2, data1.id == data2.id, "left").filter("country ...
The + string concatenation operator behaves differently when it works with an empty, zero-length string than when it works with NULL, or unknown values. A zero-length character string can be specified as two single quotation marks without any characters inside the quotation marks. A zero-length...
Action: Use CONCATENATE or CONTINUEIF. Break up the physical records. SQL*Loader-00511 Unable to initialize read functions Cause: SQL*Loader could not initialize the read functions. Action: Check the errors below this message in the log file for more information. SQL*Loader-00512 Unable to free...
display 'Complete the following statement's search condition:'; display delete_stmt; read search_cond; concatenate delete_stmt, search_cond; EXEC SQL PREPARE sql_stmt FROM :delete_stmt; LOOP display 'Enter employee number: '; read emp_number; IF emp_number = 0 THEN exit loop; EXEC SQL EX...
We haven't inserted any data into our table, so we just see the empty table structure. 我们没有在表中插入任何数据,因此我们只看到空表结构。 If you aren't familiar with SQL queries, the one we just ran, SELECT * FROM users, is one of the simplest ones you can write. ...
CREATE(DATABASE|SCHEMA)[IF NOT EXISTS]database_name[COMMENT database_comment][LOCATION hdfs_path][WITH DBPROPERTIES(property_name=property_value,...)]; 1 2 3 4 1 2 3 4 注:DATABASE与SCHEMA用途相同 1.1.2 Drop Database DROP(DATABASE|SCHEMA) [IFEXISTS] database_name [RESTRICT|CASCADE];...
This operator is used to concatenate one or more strings as shown in the following table. OperationResult 'SQL'||'stream' SQLstream 'SQL'||''||'stream' SQLstream 'SQL'||'stream'||' Incorporated' SQLstream Incorporated |||||| LIKE patterns LIKE compares a...
component is missing, not registered, not upgradeable Component OLE DB Source has no inputs, or all of its inputs are already connected to other outputs. Concatenate the int in derived column Conditional Split - Not Null express...