Found a solution: I found this in MySQL Docs and after a few tests it works: the following statement sets col2 to the current (updated) col1 value, not the original col1 value. The result is that col1 and col2 have the same value. This behavior differs from standard SQL. UPDATE t1 SET col1 = col1 + 1, … Read more
Short version: If your MySQL user root needs a password to connect, it might be a good idea to have mysqladmin provide that password 😉 Longer version: Your MySQL user root seems to need a password to connect setting the mysql root password new But mysqladmin tries to connect without a password ‘Access denied for user ‘root’@’localhost’ (using password: NO)’ And mysqladmin does that because you’re not … Read more
use the float or real data types only if the precision provided by decimal (up to 38 digits) is insufficient Approximate numeric data types(see table 3.3) do not store the exact values specified for many numbers; they store an extremely close approximation of the value. (Technet) Avoid using float or real columns in WHERE clause search conditions, especially the = and <> operators. It is best to … Read more
When I try to execute this snippet: I get: There is no problem with database connection because I can execute basic SQL commands. What is the problem with this statement?
The MSDN documentation for datetime recommends using datetime2. Here is their recommendation: Use the time, date, datetime2 and datetimeoffset data types for new work. These types align with the SQL Standard. They are more portable. time, datetime2 and datetimeoffset provide more seconds precision. datetimeoffset provides time zone support for globally deployed applications. datetime2 has larger date range, a larger default fractional precision, and optional user-specified precision. Also depending on the user-specified … Read more
SUM is an aggregate function. It will calculate the total for each group. + is used for calculating two or more columns in a row. Consider this example, will result will result will result
Since Oracle 9i there are two ways or declaring a directory for use with UTL_FILE. The older way is to set the INIT.ORA parameter UTL_FILE_DIR. We have to restart the database for a change to take affect. The value can like any other PATH variable; it accepts wildcards. Using this approach means passing the directory … Read more
Is it possible to query for table names which contain columns being ?
My goal is to select result from one CTE and insert into other table with another CTE in the same procedure. How to do it? My error is… invalid object name xy. My query is
You should specify column names as below. It’s good practice and probably solve your problem EDIT: As you said employees has 112 columns (sic!) try to run below select to compare both tables’ columns and than you should upgrade your tables to have the same structure.