The complete guide to SQL COALESCE. Learn the syntax, parameters, use cases and find practical examples in the Hightouch SQL Dictionary.
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Content Enginesupports a query syntax that conforms generally to SQL-92 and specifically is aligned withSQL Serverquery syntax wherever there is equivalence of function, with classes and properties playing the role of tables and columns. This section: describes the conventions used for SQL query synt...
COALESCE, COBOL, COLLATE, COLLATION, COLLATION_CATALOG, COLLATION_NAME, COLLATION_SCHEMA, COLLECT, COLUMN, COLUMNS, COLUMN_NAME, COMMAND_FUNCTION, COMMAND_FUNCTION_CODE, COMMIT, COMMITTED, CONDITION, CONDITION_NUMBER, CONNECT, CONNECTION, CONNECTION_NAME, CONSTRAINT, CONSTRAINTS, Issue 01 (2025-03-17...
COALESCE function The COALESCE function is used to return the first non-NULL value from a list of arguments: Syntax: COALESCE(value1, value2, ..., valueN) Example: If you have COALESCE(NULL, NULL, "hello", "world") it returns "hello". This function is particularly useful for substi...
Section 9.4.1, “Dumping Data in SQL Format with mysqldump” Section 19.2.5.1, “Evaluation of Database-Level Replication and Binary Logging Options” Section 14.18.1.1, “Function which Configures Group Replication Primary” Section 19.2.5, “How Servers Evaluate Replication Filtering Rules” Section...
An identifier cannot be the same as a query language keyword. Here is a list of query language keywords:ABS ALL AND ANY AS ASC AVG BETWEEN BIT_LENGTH BOTH BY CASE CHAR_LENGTH CHARACTER_LENGTH CLASS COALESCE CONCAT COUNT CURRENT_DATE CURRENT_TIMESTAMP DELETE ...
CLONE; added in 8.0.3 (nonreserved) CLOSE COALESCE CODE COLLATE® COLLATION COLUMN® COLUMNS COLUMN_FORMAT COLUMN_NAME COMMENT COMMIT COMMITTED COMPACT COMPLETION COMPONENT COMPRESSED COMPRESSION CONCURRENT CONDITION® CONNECTION CONSISTENT CONSTRAINT® ...
COALESCE PARTITION Section 17.12.1, “Online DDL Operations” COMMIT Section 15.1.1, “Atomic Data Definition Statement Support” Section 17.7.2.2, “autocommit, Commit, and Rollback” Section 10.5.5, “Bulk Data Loading for InnoDB Tables” Section 17.6.1.5, “Converting Tables from MyISAM to ...
In all cases,nilwill be returned if the language can not be identified. At this point, it should be noted that some lexers can be extremely chatty. To mitigate this, you can use the coalescing lexer to coalesce runs of identical token types into a single token: ...