SQL Query with variable name table in Stored Procedure using MySql 8 versionPosted by: Mark Sunderland Date: April 09, 2021 02:37PM Hi, This is my SQL query that working correctly and it's stored an a database MySql version 8.0.17 SELECT GROUP_CONCAT(DISTINCT CONCAT ( "max(IF(`p...
This statement is wrong. You declared it as Table variable and trying to use as Scalar variable. In fact I am not convinced on the approach itself. Why don't you create a valid table and insert a NULL value in it. Fetch NULL in your query if you want (or filter it with WHERE clau...
i want to create a stored procedure which count the rows of any table in a given database. Im assuming that the query for this problem would be somehow like the statement given below. note: EXEC stored.procedure_name <TABLE_NAME> btw, this is the code which i am trying to compile for...
Assume that you create a stored procedure that uses a cursor on a table variable in Microsoft SQL Server 2012 or SQL Server 2014. Additionally, the stored procedure updates the table by using a WHERE CURRENT OF statement together with the cursor. For example, your stored proc...
Table variables were introduced in SQL Server 2000 with intention to reduce recompiles. Over time, it gained popularity. Many users use to to populate large number of rows and then join with other tables.When the batch or stored procedure containing the table variable is compiled, the number ...
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This variable can be used in the function, stored procedure, or batch in which it's declared. Within its scope, a table variable can be used like a regular table. It may be applied anywhere a table or table expression is used in SELECT, INSERT, UPDATE, and DELETE statements. However, ...
The table variable exactly is also instantiated in the tempdb. Some one thought it was a memory table,but that's not true. Below is an experiment to show it is stored in tempdb. /*Check the difference between Temp Table and Memory Tables*/--Get Current Session IDSELECT@@SPIDASCurrent_Se...
The column is computed from an expression that uses other columns in the same table. For example, a computed column can have the definition: cost AS price * qty. The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or...
is it possible to use variable table and/or field names in stored procedures i.e. construct the name of a table/field based on an input parameter as in : create procedure toto(in p_name char(5), out p_count int) begin select count(*) into p_count from table_'p_name' ...