Troubleshooting of PostgreSQL: Difference between revisions
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Correct query syntax | Correct query syntax<ref>[http://www.sqlines.com/postgresql/limit_offset PostgreSQL Queries - OFFSET and LIMIT - Guide, Examples and Alternatives - SQLines Tools]</ref> | ||
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SELECT * | SELECT * | ||
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=== How to fix: The numeric column data all became null after imported === | |||
[[Troubleshooting of Navicat for PostgreSQL]] | [[Troubleshooting of Navicat for PostgreSQL]] | ||
Latest revision as of 16:34, 18 April 2023
Troubleshooting of PostgreSQL
How to fix Syntax error of PostgreSQL[edit]
How to fix Syntax error: 7 ERROR: LIMIT #,# syntax is not supported[edit]
Query syntax mer error
SELECT * FROM my_table LIMIT 0,10
Error message
Uncaught PDOException: SQLSTATE[42601]: Syntax error: 7 ERROR: LIMIT #,# syntax is not supported HINT: Use separate LIMIT and OFFSET clauses.
Correct query syntax[1]
SELECT * FROM my_table LIMIT 10 OFFSET 0
How to fix ERROR: operator does not exist: ` character varying[edit]
The following SQL query has a syntax error:
SELECT `my_columm` from my_table LIMIT 10
Error message
ERROR: operator does not exist: ` character varying
LINE 1: SELECT `content_hash`
^
HINT: No operator matches the given name and argument type. You might need to add an explicit type cast.
To fix the error, update the query with the correct syntax:
SELECT my_columm from my_table LIMIT 10
How to fix ERROR: argument of WHERE must be type boolean, not type integer[edit]
Query syntax mer error
SELECT * FROM my_table WHERE 1
Correct query syntax
SELECT * FROM my_table WHERE 1 = 1
or
SELECT * FROM my_table WHERE TRUE
How to fix the ERROR: column "count" does not exist[edit]
The following SQL query has a syntax error:
SELECT count(*) count, content_hash from my_table GROUP BY content_hash having count >= 2
To fix the error, update the query with the correct syntax:
SELECT count(*) count, content_hash from my_table GROUP BY content_hash having count(*) >= 2
How to fix: The numeric column data all became null after imported[edit]
Troubleshooting of Navicat for PostgreSQL
Further reading[edit]
- dynamic sql - Why would someone use WHERE 1=1 AND <conditions> in a SQL clause? - Stack Overflow
- Working with Insert Into Ignore in Postgres
References[edit]
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