It does a check-read of every key for each row to verify that they indeed point to the correct row. This may take a long time for a large table that has many indexes. Normally, myisamchk stops after the first error it finds. If you want to obtain more information, you can add ...
Similar to MSSQL,in MySQL, column existence checks are often performed using the INFORMATION SCHEMA database. As a matter of fact, this database stores metadata about all tables and columns within all the databases. In this case,we use theCOLUMNStable that contains data about columns in tables...
2.Create public synonyms for all tables in target schema using below query. This is required to make the tables available for other users to access. 2.a)Login to schema as the schema owner user schemaowner1 (use any DB tool like SQL developer) and run below query to get the SQL statem...
In short, I’m going to look at an efficient way to just identify differences and produce some helpful statistics along with them. Along the way, I hope you learn a few useful techniques. Setting up a test environment We’ll need two tables to test with, so here is some simple code t...
EXECUTE master.dbo.sp_MSforeachdb 'USE [?]; if exists(select * from INFORMATION_SCHEMA.tables where TABLE_TYPE=''BASE TABLE'' and TABLE_NAME=''DB_BACKUP_LOG_T'') begin print ''exist in '' + db_name() end' VT Please mark answered if I've answered your question and vote f...
How to prepare these instruments to troubleshoot the performance issues To take advantage of these instruments, they need to be enabled first to make the performance schema log-related data. In addition to logging the information of running threads, it is also possible to maintain the history of...
This tells us the OWNER of the SCHEMA.\z Modifications to Get All Tables in PostgreSQLAn alternative to the first solution would be to use:postgres-# \dt *.* This will return all the tables as what’s done before.We hope you learned the different ways in which we can display the IN...
If you want to optimize all the tables in a particular MySQL database, use the following command. The following command will optimize all the tables located in thegeekstuff database. mysqlcheck -o thegeekstuff -u root -pMySQLSecretPwd99 ...
In PostgreSQL, the “\d” command, the “\d+” command, “information_schema”, and the “SELECT *” statements with the “FALSE” option are used to check the table’s structure. The “\d” and “\d+” are meta-commands and must be executed from the “SQL Shell” aka psql. Whil...
Option Explicit Public Function TableExists(strTableName As String, strFullDbPath As String) As Boolean Dim conMain As New ADODB.Connection Dim rstSchema As New ADODB.Recordset ' Open connection to database and set recordset to the table schema of that Db conMain.Open "Provider=Microsoft.Je...